{ "$schema": "https://freeapitools.dev/schemas/api-catalog-v1.json", "generated_at": "2026-05-24T16:23:03.137Z", "base_url": "https://freeapitools.dev/api/v1", "auth": { "type": "api_key", "location": "header", "name": "X-API-Key", "register": "https://freeapitools.dev/api/v1/register", "activate": "https://freeapitools.dev/api/v1/activate" }, "total": 55, "apis": [ { "id": "weatherstack", "name": "WeatherStack", "category": "Weather", "tagline": "Real-time weather data for any location", "description": "Get current weather conditions, forecasts, and historical data for any city worldwide. Supports metric and imperial units.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/weather", "documentation": "https://freeapitools.dev/apis/weatherstack", "free_tier": "1,000 requests/month", "parameters": [ { "name": "city", "type": "string", "required": true, "desc": "City name or coordinates" }, { "name": "units", "type": "string", "required": false, "desc": "metric or imperial (default: metric)" } ], "example_response": "{\"temp\": 18.5, \"humidity\": 65, \"wind_speed\": 12.3, \"condition\": \"Partly Cloudy\"}" }, { "id": "forecastpro", "name": "ForecastPro", "category": "Weather", "tagline": "7-day weather forecasts with hourly precision", "description": "Detailed 7-day forecasts with hourly breakdowns. Includes precipitation probability, UV index, and air quality data.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/forecast", "documentation": "https://freeapitools.dev/apis/forecastpro", "free_tier": "500 requests/month", "parameters": [ { "name": "lat", "type": "number", "required": true, "desc": "Latitude" }, { "name": "lon", "type": "number", "required": true, "desc": "Longitude" }, { "name": "days", "type": "number", "required": false, "desc": "Forecast days (1-7)" } ], "example_response": "{\"daily\": [{\"date\": \"2026-02-10\", \"high\": 22, \"low\": 14, \"precip\": 0.3}]}" }, { "id": "air-quality", "name": "AirQualityAPI", "category": "Weather", "tagline": "Global air quality index and pollutant data", "description": "Real-time AQI data, PM2.5, PM10, O3, NO2, SO2, and CO levels for any location. Includes health recommendations.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/air-quality", "documentation": "https://freeapitools.dev/apis/air-quality", "free_tier": "2,000 requests/month", "parameters": [ { "name": "city", "type": "string", "required": true, "desc": "City name" } ], "example_response": "{\"aqi\": 42, \"pm25\": 12.3, \"status\": \"Good\", \"recommendation\": \"Air quality is satisfactory\"}" }, { "id": "uv-index", "name": "UVIndex", "category": "Weather", "tagline": "UV radiation index and sun exposure risk", "description": "Current and forecasted UV index. Includes recommended SPF, safe exposure time, and skin type-specific advice.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/uv", "documentation": "https://freeapitools.dev/apis/uv-index", "free_tier": "3,000 requests/month", "parameters": [ { "name": "lat", "type": "number", "required": true, "desc": "Latitude" }, { "name": "lon", "type": "number", "required": true, "desc": "Longitude" } ], "example_response": "{\"uv_index\": 6.2, \"risk\": \"High\", \"spf_recommended\": 30, \"safe_exposure_min\": 25}" }, { "id": "sentimentai", "name": "SentimentAI", "category": "AI / NLP", "tagline": "Analyze text sentiment and emotions", "description": "Deep sentiment analysis using transformer models. Returns polarity score, emotion detection, and aspect-based sentiment.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/sentiment", "documentation": "https://freeapitools.dev/apis/sentimentai", "free_tier": "5,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to analyze (max 5000 chars)" }, { "name": "language", "type": "string", "required": false, "desc": "ISO 639-1 language code" } ], "example_response": "{\"polarity\": 0.85, \"emotion\": \"joy\", \"confidence\": 0.92}" }, { "id": "text-summarizer", "name": "TextSummarizer", "category": "AI / NLP", "tagline": "AI-powered text summarization", "description": "Abstractive and extractive text summarization. Supports articles, documents, and web pages up to 50K tokens.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/summarize", "documentation": "https://freeapitools.dev/apis/text-summarizer", "free_tier": "1,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to summarize" }, { "name": "max_length", "type": "number", "required": false, "desc": "Max summary length in words" }, { "name": "mode", "type": "string", "required": false, "desc": "abstractive or extractive" } ], "example_response": "{\"summary\": \"The article discusses...\", \"key_points\": [\"Point 1\", \"Point 2\"]}" }, { "id": "entity-extract", "name": "EntityExtract", "category": "AI / NLP", "tagline": "Named entity recognition and extraction", "description": "Extract people, organizations, locations, dates, and custom entities from text. Supports 50+ languages.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/entities", "documentation": "https://freeapitools.dev/apis/entity-extract", "free_tier": "3,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to analyze" }, { "name": "types", "type": "string[]", "required": false, "desc": "Entity types to extract" } ], "example_response": "{\"entities\": [{\"text\": \"Google\", \"type\": \"ORG\", \"start\": 0, \"end\": 6}]}" }, { "id": "text-classifier", "name": "TextClassifier", "category": "AI / NLP", "tagline": "Zero-shot text classification", "description": "Classify text into any custom categories without training. Powered by large language models.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/classify", "documentation": "https://freeapitools.dev/apis/text-classifier", "free_tier": "2,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to classify" }, { "name": "labels", "type": "string[]", "required": true, "desc": "Array of category labels" } ], "example_response": "{\"label\": \"technology\", \"score\": 0.94, \"scores\": {\"technology\": 0.94, \"sports\": 0.03}}" }, { "id": "keyword-extract", "name": "KeywordExtract", "category": "AI / NLP", "tagline": "Extract keywords and key phrases from text", "description": "AI-powered keyword extraction using RAKE and TextRank algorithms. Returns ranked keywords with relevance scores.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/keywords", "documentation": "https://freeapitools.dev/apis/keyword-extract", "free_tier": "5,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to analyze" }, { "name": "max_keywords", "type": "number", "required": false, "desc": "Maximum keywords to return" } ], "example_response": "{\"keywords\": [{\"phrase\": \"machine learning\", \"score\": 0.95}, {\"phrase\": \"neural network\", \"score\": 0.87}]}" }, { "id": "imagegen-pro", "name": "ImageGen Pro", "category": "AI / Images", "tagline": "Generate images from text prompts", "description": "Create stunning images from text descriptions using Stable Diffusion XL. Supports multiple styles and aspect ratios.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/images/generate", "documentation": "https://freeapitools.dev/apis/imagegen-pro", "free_tier": "50 images/day", "parameters": [ { "name": "prompt", "type": "string", "required": true, "desc": "Image description" }, { "name": "size", "type": "string", "required": false, "desc": "256x256, 512x512, or 1024x1024" }, { "name": "style", "type": "string", "required": false, "desc": "realistic, anime, oil-painting, etc." } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/img/abc123.png\", \"seed\": 42}" }, { "id": "background-remover", "name": "BackgroundRemover", "category": "AI / Images", "tagline": "Remove backgrounds from images instantly", "description": "AI-powered background removal for product photos, portraits, and graphics. Returns transparent PNG.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/images/remove-bg", "documentation": "https://freeapitools.dev/apis/background-remover", "free_tier": "100 images/month", "parameters": [ { "name": "image_url", "type": "string", "required": true, "desc": "URL of the image" }, { "name": "format", "type": "string", "required": false, "desc": "png or webp" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/processed/abc.png\", \"size_kb\": 245}" }, { "id": "image-upscaler", "name": "ImageUpscaler", "category": "AI / Images", "tagline": "AI image upscaling up to 4x resolution", "description": "Enhance image resolution using Real-ESRGAN. Supports 2x and 4x upscaling with noise reduction.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/images/upscale", "documentation": "https://freeapitools.dev/apis/image-upscaler", "free_tier": "50 images/month", "parameters": [ { "name": "image_url", "type": "string", "required": true, "desc": "URL of the image" }, { "name": "scale", "type": "number", "required": false, "desc": "2 or 4 (default: 2)" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/upscaled/abc.png\", \"original_size\": \"512x512\", \"new_size\": \"2048x2048\"}" }, { "id": "ocr-vision", "name": "OCR Vision", "category": "AI / Images", "tagline": "Extract text from images and PDFs", "description": "Optical character recognition with support for 100+ languages. Handles handwriting, receipts, documents, and screenshots.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/ocr", "documentation": "https://freeapitools.dev/apis/ocr-vision", "free_tier": "500 pages/month", "parameters": [ { "name": "image_url", "type": "string", "required": true, "desc": "Image or PDF URL" }, { "name": "language", "type": "string", "required": false, "desc": "Language hint (auto-detected by default)" } ], "example_response": "{\"text\": \"Invoice #12345\\nDate: 2026-01-15\", \"confidence\": 0.97, \"blocks\": []}" }, { "id": "translateai", "name": "TranslateAI", "category": "Translation", "tagline": "Neural machine translation for 100+ languages", "description": "High-quality neural machine translation powered by transformer models. Supports 120+ language pairs with context-aware translations.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/translate", "documentation": "https://freeapitools.dev/apis/translateai", "free_tier": "500K chars/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to translate" }, { "name": "target", "type": "string", "required": true, "desc": "Target language code (es, fr, de, etc.)" }, { "name": "source", "type": "string", "required": false, "desc": "Source language (auto-detected)" } ], "example_response": "{\"translated\": \"Hola mundo\", \"source_lang\": \"en\", \"confidence\": 0.98}" }, { "id": "language-detect", "name": "LanguageDetect", "category": "Translation", "tagline": "Detect the language of any text", "description": "Identify the language of text with confidence scores. Supports 200+ languages and dialects including mixed-language text.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/detect-language", "documentation": "https://freeapitools.dev/apis/language-detect", "free_tier": "10,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to analyze" } ], "example_response": "{\"language\": \"fr\", \"name\": \"French\", \"confidence\": 0.99, \"alternatives\": [{\"language\": \"ca\", \"confidence\": 0.01}]}" }, { "id": "transliterate", "name": "Transliterate", "category": "Translation", "tagline": "Convert text between writing systems", "description": "Transliterate text between Latin, Cyrillic, Arabic, Devanagari, Chinese Pinyin, Japanese Romaji, and more.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/transliterate", "documentation": "https://freeapitools.dev/apis/transliterate", "free_tier": "5,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Text to transliterate" }, { "name": "target_script", "type": "string", "required": true, "desc": "Target writing system" } ], "example_response": "{\"result\": \"privet mir\", \"source_script\": \"Cyrillic\", \"target_script\": \"Latin\"}" }, { "id": "email-verify", "name": "EmailVerify", "category": "Email", "tagline": "Validate email addresses in real-time", "description": "Check email deliverability, MX records, disposable detection, and role-based filtering. Reduce bounce rates.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/email/verify", "documentation": "https://freeapitools.dev/apis/email-verify", "free_tier": "1,000 verifications/month", "parameters": [ { "name": "email", "type": "string", "required": true, "desc": "Email address to verify" } ], "example_response": "{\"valid\": true, \"deliverable\": true, \"disposable\": false, \"role_based\": false, \"mx_found\": true}" }, { "id": "email-sender", "name": "EmailSender", "category": "Email", "tagline": "Transactional email delivery API", "description": "Send transactional emails with high deliverability. Supports HTML templates, attachments, and tracking.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/email/send", "documentation": "https://freeapitools.dev/apis/email-sender", "free_tier": "200 emails/day", "parameters": [ { "name": "to", "type": "string", "required": true, "desc": "Recipient email" }, { "name": "subject", "type": "string", "required": true, "desc": "Email subject" }, { "name": "html", "type": "string", "required": true, "desc": "HTML body" } ], "example_response": "{\"id\": \"msg_abc123\", \"status\": \"queued\", \"estimated_delivery\": \"< 5s\"}" }, { "id": "spam-check", "name": "SpamCheck", "category": "Email", "tagline": "Email spam score analyzer", "description": "Analyze email content for spam triggers. Get spam score, flagged words, and improvement suggestions.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/email/spam-check", "documentation": "https://freeapitools.dev/apis/spam-check", "free_tier": "2,000 checks/month", "parameters": [ { "name": "subject", "type": "string", "required": true, "desc": "Email subject line" }, { "name": "body", "type": "string", "required": true, "desc": "Email body content" } ], "example_response": "{\"score\": 2.1, \"max_score\": 10, \"verdict\": \"Not Spam\", \"flags\": [\"ALL_CAPS in subject\"]}" }, { "id": "geolocate", "name": "GeoLocate", "category": "Geolocation", "tagline": "IP geolocation and reverse geocoding", "description": "Get location data from IP addresses. Returns country, city, timezone, ISP, and coordinates.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/geo", "documentation": "https://freeapitools.dev/apis/geolocate", "free_tier": "10,000 lookups/month", "parameters": [ { "name": "ip", "type": "string", "required": true, "desc": "IPv4 or IPv6 address" } ], "example_response": "{\"country\": \"US\", \"city\": \"San Francisco\", \"lat\": 37.7749, \"lon\": -122.4194, \"timezone\": \"America/Los_Angeles\"}" }, { "id": "geocoder", "name": "Geocoder", "category": "Geolocation", "tagline": "Address to coordinates and back", "description": "Forward and reverse geocoding. Convert addresses to coordinates or coordinates to addresses.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/geocode", "documentation": "https://freeapitools.dev/apis/geocoder", "free_tier": "5,000 requests/month", "parameters": [ { "name": "address", "type": "string", "required": false, "desc": "Address to geocode" }, { "name": "lat", "type": "number", "required": false, "desc": "Latitude for reverse geocoding" }, { "name": "lon", "type": "number", "required": false, "desc": "Longitude for reverse geocoding" } ], "example_response": "{\"address\": \"1600 Amphitheatre Parkway\", \"lat\": 37.4220, \"lon\": -122.0841, \"formatted\": \"Mountain View, CA 94043\"}" }, { "id": "timezone", "name": "TimezoneAPI", "category": "Geolocation", "tagline": "Timezone data and time conversion", "description": "Get timezone information for any location. Convert times between timezones. DST-aware.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/timezone", "documentation": "https://freeapitools.dev/apis/timezone", "free_tier": "10,000 requests/month", "parameters": [ { "name": "lat", "type": "number", "required": true, "desc": "Latitude" }, { "name": "lon", "type": "number", "required": true, "desc": "Longitude" } ], "example_response": "{\"timezone\": \"America/New_York\", \"offset\": -5, \"dst\": false, \"current_time\": \"2026-02-10T17:30:00-05:00\"}" }, { "id": "currency-convert", "name": "CurrencyConvert", "category": "Payments", "tagline": "Real-time currency exchange rates", "description": "Live exchange rates for 170+ currencies. Historical rates, conversion, and time series data.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/currency", "documentation": "https://freeapitools.dev/apis/currency-convert", "free_tier": "5,000 requests/month", "parameters": [ { "name": "from", "type": "string", "required": true, "desc": "Source currency (USD, EUR, etc.)" }, { "name": "to", "type": "string", "required": true, "desc": "Target currency" }, { "name": "amount", "type": "number", "required": false, "desc": "Amount to convert" } ], "example_response": "{\"from\": \"USD\", \"to\": \"EUR\", \"rate\": 0.9234, \"result\": 92.34}" }, { "id": "invoice-generator", "name": "InvoiceGen", "category": "Payments", "tagline": "Generate PDF invoices via API", "description": "Create professional invoices programmatically. Supports multiple currencies, tax calculations, and branding.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/invoice", "documentation": "https://freeapitools.dev/apis/invoice-generator", "free_tier": "50 invoices/month", "parameters": [ { "name": "items", "type": "object[]", "required": true, "desc": "Invoice line items" }, { "name": "currency", "type": "string", "required": false, "desc": "Currency code" }, { "name": "tax_rate", "type": "number", "required": false, "desc": "Tax percentage" } ], "example_response": "{\"invoice_url\": \"https://cdn.freeapitools.dev/invoices/INV-2026-001.pdf\", \"total\": 1250.00}" }, { "id": "vat-validator", "name": "VATValidator", "category": "Payments", "tagline": "Validate EU VAT numbers", "description": "Verify VAT registration numbers across all EU member states. Returns company name and address.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/vat/validate", "documentation": "https://freeapitools.dev/apis/vat-validator", "free_tier": "1,000 validations/month", "parameters": [ { "name": "vat_number", "type": "string", "required": true, "desc": "VAT number with country prefix" } ], "example_response": "{\"valid\": true, \"country\": \"DE\", \"company\": \"Acme GmbH\", \"address\": \"Berlin, Germany\"}" }, { "id": "pagespeed", "name": "PageSpeedAPI", "category": "Analytics", "tagline": "Website performance analysis", "description": "Analyze page load speed, Core Web Vitals, and performance metrics. Get actionable optimization suggestions.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/pagespeed", "documentation": "https://freeapitools.dev/apis/pagespeed", "free_tier": "500 analyses/month", "parameters": [ { "name": "url", "type": "string", "required": true, "desc": "URL to analyze" }, { "name": "strategy", "type": "string", "required": false, "desc": "mobile or desktop" } ], "example_response": "{\"score\": 87, \"fcp\": 1.2, \"lcp\": 2.1, \"cls\": 0.05, \"suggestions\": [\"Compress images\", \"Enable caching\"]}" }, { "id": "screenshot", "name": "ScreenshotAPI", "category": "Analytics", "tagline": "Capture website screenshots via API", "description": "Generate full-page or viewport screenshots of any URL. Supports custom dimensions, formats, and device emulation.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/screenshot", "documentation": "https://freeapitools.dev/apis/screenshot", "free_tier": "100 screenshots/month", "parameters": [ { "name": "url", "type": "string", "required": true, "desc": "URL to screenshot" }, { "name": "width", "type": "number", "required": false, "desc": "Viewport width" }, { "name": "format", "type": "string", "required": false, "desc": "png, jpeg, or webp" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/screenshots/abc.png\", \"width\": 1920, \"height\": 3200}" }, { "id": "user-agent-parser", "name": "UserAgentParser", "category": "Analytics", "tagline": "Parse user agent strings", "description": "Extract browser, OS, device type, and bot detection from user agent strings.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/parse-ua", "documentation": "https://freeapitools.dev/apis/user-agent-parser", "free_tier": "50,000 requests/month", "parameters": [ { "name": "ua", "type": "string", "required": true, "desc": "User agent string" } ], "example_response": "{\"browser\": \"Chrome\", \"version\": \"120\", \"os\": \"macOS\", \"device\": \"desktop\", \"is_bot\": false}" }, { "id": "sms-blast", "name": "SMSBlast", "category": "Communication", "tagline": "Send SMS messages worldwide", "description": "Reliable SMS delivery to 200+ countries. Supports Unicode, delivery receipts, and scheduled sending.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/sms/send", "documentation": "https://freeapitools.dev/apis/sms-blast", "free_tier": "100 SMS/month", "parameters": [ { "name": "to", "type": "string", "required": true, "desc": "Phone number with country code" }, { "name": "message", "type": "string", "required": true, "desc": "SMS text (max 1600 chars)" } ], "example_response": "{\"id\": \"sms_abc123\", \"status\": \"sent\", \"segments\": 1, \"cost\": 0.00}" }, { "id": "push-notify", "name": "PushNotify", "category": "Communication", "tagline": "Web and mobile push notifications", "description": "Send push notifications to web browsers and mobile devices. Supports rich content, actions, and scheduling.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/push/send", "documentation": "https://freeapitools.dev/apis/push-notify", "free_tier": "1,000 notifications/month", "parameters": [ { "name": "token", "type": "string", "required": true, "desc": "Device push token" }, { "name": "title", "type": "string", "required": true, "desc": "Notification title" }, { "name": "body", "type": "string", "required": true, "desc": "Notification body" } ], "example_response": "{\"id\": \"push_abc123\", \"delivered\": true}" }, { "id": "webhook-relay", "name": "WebhookRelay", "category": "Communication", "tagline": "Webhook forwarding and transformation", "description": "Forward, transform, and retry webhooks. Built-in request logging, replay, and header manipulation.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/webhook/relay", "documentation": "https://freeapitools.dev/apis/webhook-relay", "free_tier": "5,000 relays/month", "parameters": [ { "name": "target_url", "type": "string", "required": true, "desc": "Destination URL" }, { "name": "payload", "type": "object", "required": true, "desc": "JSON payload to forward" } ], "example_response": "{\"id\": \"wh_abc123\", \"status\": 200, \"response_time_ms\": 145}" }, { "id": "pdf-generator", "name": "PDFGenerator", "category": "PDF / Documents", "tagline": "Generate PDFs from HTML or templates", "description": "Convert HTML to PDF with full CSS support. Includes headers, footers, page numbers, and custom fonts.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/pdf/generate", "documentation": "https://freeapitools.dev/apis/pdf-generator", "free_tier": "100 PDFs/month", "parameters": [ { "name": "html", "type": "string", "required": true, "desc": "HTML content" }, { "name": "format", "type": "string", "required": false, "desc": "A4, Letter, Legal" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/pdfs/doc_abc.pdf\", \"pages\": 3, \"size_kb\": 156}" }, { "id": "doc-parser", "name": "DocParser", "category": "PDF / Documents", "tagline": "Extract structured data from documents", "description": "Parse invoices, receipts, contracts, and forms. Returns structured JSON with extracted fields.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/doc/parse", "documentation": "https://freeapitools.dev/apis/doc-parser", "free_tier": "200 documents/month", "parameters": [ { "name": "document_url", "type": "string", "required": true, "desc": "URL of the document" }, { "name": "type", "type": "string", "required": false, "desc": "invoice, receipt, contract, or auto" } ], "example_response": "{\"type\": \"invoice\", \"vendor\": \"Acme Inc\", \"total\": 1500.00, \"date\": \"2026-01-15\"}" }, { "id": "markdown-to-html", "name": "MarkdownToHTML", "category": "PDF / Documents", "tagline": "Convert Markdown to styled HTML", "description": "Transform Markdown to beautiful HTML with syntax highlighting, math rendering, and custom themes.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/markdown", "documentation": "https://freeapitools.dev/apis/markdown-to-html", "free_tier": "10,000 conversions/month", "parameters": [ { "name": "markdown", "type": "string", "required": true, "desc": "Markdown content" }, { "name": "theme", "type": "string", "required": false, "desc": "github, dracula, or minimal" } ], "example_response": "{\"html\": \"

Hello World

This is bold

\"}" }, { "id": "qrcode-gen", "name": "QRCode Gen", "category": "QR / Barcodes", "tagline": "Generate QR codes with custom styling", "description": "Create QR codes with custom colors, logos, and error correction. Supports PNG, SVG, and PDF output.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/qr/generate", "documentation": "https://freeapitools.dev/apis/qrcode-gen", "free_tier": "5,000 QR codes/month", "parameters": [ { "name": "data", "type": "string", "required": true, "desc": "Data to encode" }, { "name": "size", "type": "number", "required": false, "desc": "Size in pixels" }, { "name": "format", "type": "string", "required": false, "desc": "png, svg, or pdf" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/qr/abc.png\", \"size\": 300}" }, { "id": "barcode-reader", "name": "BarcodeReader", "category": "QR / Barcodes", "tagline": "Read barcodes and QR codes from images", "description": "Detect and decode barcodes (EAN, UPC, Code128) and QR codes from images. Supports batch processing.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/barcode/read", "documentation": "https://freeapitools.dev/apis/barcode-reader", "free_tier": "1,000 scans/month", "parameters": [ { "name": "image_url", "type": "string", "required": true, "desc": "Image URL containing barcode" } ], "example_response": "{\"found\": true, \"type\": \"QR_CODE\", \"data\": \"https://example.com\", \"confidence\": 0.99}" }, { "id": "url-shortener", "name": "URLShortener", "category": "URL / Links", "tagline": "Shorten URLs with click analytics", "description": "Create short links with detailed click analytics. Track geographic distribution, referrers, and devices.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/shorten", "documentation": "https://freeapitools.dev/apis/url-shortener", "free_tier": "1,000 links/month", "parameters": [ { "name": "url", "type": "string", "required": true, "desc": "Long URL to shorten" }, { "name": "custom_slug", "type": "string", "required": false, "desc": "Custom short code" } ], "example_response": "{\"short_url\": \"https://fapi.link/abc123\", \"clicks\": 0}" }, { "id": "meta-scraper", "name": "MetaScraper", "category": "URL / Links", "tagline": "Extract metadata from any URL", "description": "Get title, description, Open Graph data, favicons, and structured data from any web page.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/meta", "documentation": "https://freeapitools.dev/apis/meta-scraper", "free_tier": "3,000 requests/month", "parameters": [ { "name": "url", "type": "string", "required": true, "desc": "URL to scrape" } ], "example_response": "{\"title\": \"Example Page\", \"description\": \"A sample page\", \"og_image\": \"https://example.com/og.png\", \"favicon\": \"https://example.com/favicon.ico\"}" }, { "id": "link-checker", "name": "LinkChecker", "category": "URL / Links", "tagline": "Check if URLs are alive and safe", "description": "Verify URL availability, check for redirects, and scan for malware/phishing. Batch support.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/link/check", "documentation": "https://freeapitools.dev/apis/link-checker", "free_tier": "2,000 checks/month", "parameters": [ { "name": "urls", "type": "string[]", "required": true, "desc": "Array of URLs to check" } ], "example_response": "{\"results\": [{\"url\": \"https://example.com\", \"status\": 200, \"safe\": true, \"redirect\": false}]}" }, { "id": "password-strength", "name": "PasswordStrength", "category": "Security", "tagline": "Analyze password strength and breaches", "description": "Score password strength, check against known breaches (HaveIBeenPwned), and get improvement suggestions.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/password/check", "documentation": "https://freeapitools.dev/apis/password-strength", "free_tier": "10,000 checks/month", "parameters": [ { "name": "password", "type": "string", "required": true, "desc": "Password to analyze" } ], "example_response": "{\"score\": 4, \"strength\": \"Strong\", \"breached\": false, \"suggestions\": []}" }, { "id": "hash-api", "name": "HashAPI", "category": "Security", "tagline": "Generate and verify hashes", "description": "Create MD5, SHA-1, SHA-256, SHA-512, bcrypt, and argon2 hashes. Verify hash matches.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/hash", "documentation": "https://freeapitools.dev/apis/hash-api", "free_tier": "50,000 operations/month", "parameters": [ { "name": "input", "type": "string", "required": true, "desc": "String to hash" }, { "name": "algorithm", "type": "string", "required": true, "desc": "md5, sha256, bcrypt, argon2" } ], "example_response": "{\"hash\": \"5e884898da28047151d0e56f8dc62927...\", \"algorithm\": \"sha256\"}" }, { "id": "ssl-checker", "name": "SSLChecker", "category": "Security", "tagline": "Analyze SSL/TLS certificates", "description": "Check SSL certificate validity, expiration, chain, and configuration. Get security grade and recommendations.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/ssl/check", "documentation": "https://freeapitools.dev/apis/ssl-checker", "free_tier": "500 checks/month", "parameters": [ { "name": "domain", "type": "string", "required": true, "desc": "Domain to check" } ], "example_response": "{\"valid\": true, \"issuer\": \"Let's Encrypt\", \"expires\": \"2026-06-15\", \"grade\": \"A+\", \"protocols\": [\"TLSv1.3\"]}" }, { "id": "crypto-price", "name": "CryptoPrice", "category": "Crypto", "tagline": "Real-time cryptocurrency prices", "description": "Live prices for 5000+ cryptocurrencies. Market cap, volume, 24h change, and historical data.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/crypto/price", "documentation": "https://freeapitools.dev/apis/crypto-price", "free_tier": "10,000 requests/month", "parameters": [ { "name": "symbol", "type": "string", "required": true, "desc": "Crypto symbol (BTC, ETH, etc.)" }, { "name": "currency", "type": "string", "required": false, "desc": "Fiat currency (default: USD)" } ], "example_response": "{\"symbol\": \"BTC\", \"price\": 98234.50, \"change_24h\": 2.34, \"market_cap\": 1930000000000}" }, { "id": "wallet-balance", "name": "WalletBalance", "category": "Crypto", "tagline": "Check blockchain wallet balances", "description": "Query wallet balances on Ethereum, Bitcoin, Solana, and Polygon. Includes token holdings.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/crypto/balance", "documentation": "https://freeapitools.dev/apis/wallet-balance", "free_tier": "2,000 queries/month", "parameters": [ { "name": "address", "type": "string", "required": true, "desc": "Wallet address" }, { "name": "chain", "type": "string", "required": true, "desc": "ethereum, bitcoin, solana, polygon" } ], "example_response": "{\"address\": \"0x...\", \"balance\": 1.234, \"token\": \"ETH\", \"usd_value\": 4521.30}" }, { "id": "web-search", "name": "WebSearch", "category": "Search", "tagline": "Programmable web search engine", "description": "Search the web programmatically. Returns titles, snippets, URLs, and structured data. No browser needed.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/search", "documentation": "https://freeapitools.dev/apis/web-search", "free_tier": "1,000 searches/month", "parameters": [ { "name": "q", "type": "string", "required": true, "desc": "Search query" }, { "name": "limit", "type": "number", "required": false, "desc": "Results per page (max 20)" } ], "example_response": "{\"results\": [{\"title\": \"Example\", \"url\": \"https://example.com\", \"snippet\": \"This is...\"}], \"total\": 1500}" }, { "id": "image-search", "name": "ImageSearch", "category": "Search", "tagline": "Search images by keyword or reverse", "description": "Find images by keyword or upload an image for reverse search. Returns source URL, dimensions, and similar images.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/search/images", "documentation": "https://freeapitools.dev/apis/image-search", "free_tier": "500 searches/month", "parameters": [ { "name": "q", "type": "string", "required": false, "desc": "Search query" }, { "name": "image_url", "type": "string", "required": false, "desc": "Image URL for reverse search" } ], "example_response": "{\"results\": [{\"url\": \"https://...\", \"width\": 1920, \"height\": 1080, \"source\": \"unsplash.com\"}]}" }, { "id": "file-upload", "name": "FileUpload", "category": "Storage", "tagline": "Temporary file hosting API", "description": "Upload and share files temporarily. Files auto-expire after 24 hours. Supports up to 100MB per file.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/upload", "documentation": "https://freeapitools.dev/apis/file-upload", "free_tier": "1GB storage/month", "parameters": [ { "name": "file", "type": "binary", "required": true, "desc": "File to upload (multipart)" }, { "name": "expires_in", "type": "number", "required": false, "desc": "Expiry in hours (max 24)" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/files/abc123.zip\", \"expires_at\": \"2026-02-11T18:00:00Z\", \"size_mb\": 12.5}" }, { "id": "json-store", "name": "JSONStore", "category": "Storage", "tagline": "Free JSON storage for prototyping", "description": "Store and retrieve JSON data via API. Perfect for prototypes, demos, and small projects. No database needed.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/store", "documentation": "https://freeapitools.dev/apis/json-store", "free_tier": "10,000 operations/month", "parameters": [ { "name": "key", "type": "string", "required": true, "desc": "Storage key" }, { "name": "data", "type": "object", "required": true, "desc": "JSON data to store" } ], "example_response": "{\"key\": \"my-data\", \"stored\": true, \"size_bytes\": 234, \"url\": \"https://api.freeapitools.dev/v1/store/my-data\"}" }, { "id": "random-data", "name": "RandomData", "category": "Utilities", "tagline": "Generate random test data", "description": "Generate fake names, addresses, emails, phone numbers, and more for testing. Locale-aware.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/random", "documentation": "https://freeapitools.dev/apis/random-data", "free_tier": "50,000 requests/month", "parameters": [ { "name": "type", "type": "string", "required": true, "desc": "name, email, address, phone, uuid, etc." }, { "name": "locale", "type": "string", "required": false, "desc": "Locale code (en_US, es_ES, etc.)" }, { "name": "count", "type": "number", "required": false, "desc": "Number of items" } ], "example_response": "{\"data\": [{\"name\": \"Jane Smith\", \"email\": \"jane@example.com\", \"phone\": \"+1-555-0123\"}]}" }, { "id": "cron-parser", "name": "CronParser", "category": "Utilities", "tagline": "Parse and validate cron expressions", "description": "Validate cron syntax, get human-readable descriptions, and calculate next N execution times.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/cron/parse", "documentation": "https://freeapitools.dev/apis/cron-parser", "free_tier": "Unlimited", "parameters": [ { "name": "expression", "type": "string", "required": true, "desc": "Cron expression (5 or 6 fields)" }, { "name": "next", "type": "number", "required": false, "desc": "Number of next runs to calculate" } ], "example_response": "{\"valid\": true, \"description\": \"Every 5 minutes\", \"next_runs\": [\"2026-02-10T18:05:00Z\"]}" }, { "id": "color-palette", "name": "ColorPalette", "category": "Utilities", "tagline": "Generate color palettes and convert formats", "description": "Create harmonious color palettes, convert between HEX/RGB/HSL, and extract palettes from images.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/colors", "documentation": "https://freeapitools.dev/apis/color-palette", "free_tier": "10,000 requests/month", "parameters": [ { "name": "color", "type": "string", "required": false, "desc": "Base color (hex or name)" }, { "name": "mode", "type": "string", "required": false, "desc": "complementary, analogous, triadic, etc." } ], "example_response": "{\"palette\": [\"#2563EB\", \"#3B82F6\", \"#60A5FA\", \"#93C5FD\", \"#BFDBFE\"], \"mode\": \"monochromatic\"}" }, { "id": "social-preview", "name": "SocialPreview", "category": "Social Media", "tagline": "Generate OG images for social sharing", "description": "Create Open Graph images dynamically from templates. Perfect for blog posts, product pages, and link previews.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/og-image", "documentation": "https://freeapitools.dev/apis/social-preview", "free_tier": "500 images/month", "parameters": [ { "name": "title", "type": "string", "required": true, "desc": "Title text" }, { "name": "subtitle", "type": "string", "required": false, "desc": "Subtitle text" }, { "name": "theme", "type": "string", "required": false, "desc": "light, dark, gradient" } ], "example_response": "{\"url\": \"https://cdn.freeapitools.dev/og/abc123.png\", \"width\": 1200, \"height\": 630}" }, { "id": "hashtag-gen", "name": "HashtagGen", "category": "Social Media", "tagline": "AI-powered hashtag suggestions", "description": "Get relevant hashtags for your social media posts. Ranked by popularity and engagement potential.", "method": "POST", "endpoint": "https://freeapitools.dev/api/v1/hashtags", "documentation": "https://freeapitools.dev/apis/hashtag-gen", "free_tier": "3,000 requests/month", "parameters": [ { "name": "text", "type": "string", "required": true, "desc": "Post content or topic" }, { "name": "platform", "type": "string", "required": false, "desc": "instagram, twitter, linkedin, tiktok" } ], "example_response": "{\"hashtags\": [\"#webdev\", \"#api\", \"#coding\", \"#developer\", \"#tech\"], \"trending\": [\"#webdev\"]}" }, { "id": "dns-lookup", "name": "DNSLookup", "category": "DevOps", "tagline": "DNS record queries and monitoring", "description": "Query A, AAAA, CNAME, MX, TXT, NS, and SOA records. Supports propagation checking across global resolvers.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/dns", "documentation": "https://freeapitools.dev/apis/dns-lookup", "free_tier": "5,000 queries/month", "parameters": [ { "name": "domain", "type": "string", "required": true, "desc": "Domain name" }, { "name": "type", "type": "string", "required": false, "desc": "Record type (A, AAAA, MX, TXT, etc.)" } ], "example_response": "{\"records\": [{\"type\": \"A\", \"value\": \"104.21.32.1\", \"ttl\": 300}], \"propagation\": \"complete\"}" }, { "id": "ping-api", "name": "PingAPI", "category": "DevOps", "tagline": "Uptime monitoring and latency checks", "description": "Ping any URL or IP from multiple global locations. Get response time, status, and headers.", "method": "GET", "endpoint": "https://freeapitools.dev/api/v1/ping", "documentation": "https://freeapitools.dev/apis/ping-api", "free_tier": "10,000 pings/month", "parameters": [ { "name": "target", "type": "string", "required": true, "desc": "URL or IP to ping" }, { "name": "locations", "type": "string[]", "required": false, "desc": "us-east, eu-west, asia-east" } ], "example_response": "{\"alive\": true, \"latency_ms\": 45, \"status\": 200, \"location\": \"us-east-1\"}" } ] }