# Tinify.dev > Tinify.dev is a free online image toolbox with a paid API behind the same > engine. It compresses, resizes, crops, and converts AVIF, WebP, JPEG, PNG, > and GIF images. Results are reported honestly: if an operation would make a > file larger, the original is returned and labeled as not optimized. Uploaded > files and results are permanently deleted after two hours. No ads, no > watermarks. Tinify.dev is operated independently and is not affiliated with Tinify B.V. or TinyPNG. ## Free web tools - [Compress images](https://tinify.dev/compress): Lossy and lossless compression for AVIF, JPEG, PNG, GIF, and WebP. Up to 50 files per batch, 40 MB and 50 megapixels per file. - [Resize images](https://tinify.dev/resize): Exact pixel dimensions or proportional scaling, with optional aspect-ratio lock. - [Crop images](https://tinify.dev/crop): Crop a single image with a visual selection and exact output dimensions. - [Convert images](https://tinify.dev/convert): Convert between WebP, AVIF, JPEG, and PNG. ## API The same engine is available as a versioned HTTP API with 500 free successful operations every month. Only successful operations count toward usage. - Documentation: https://tinify.dev/developers - Base URL: https://api.tinify.dev/api/v1 - Endpoints: POST /images/compress, POST /images/resize, POST /images/crop, POST /images/convert, GET /usage, and asynchronous batches via POST /batches. - Requests use API keys (Authorization: Bearer) and support idempotency keys. Limits: 40 MB and 50 megapixels per image. Results expire after two hours. ## Pricing - Details: https://tinify.dev/pricing - Free: 500 successful operations per month, single-image API. - Developer: $9/month, 2,000 operations, then $0.005 per extra operation. - Pro: $29/month, 10,000 operations, then $0.003 per extra operation. - The browser tools stay free on every plan. ## Comparisons - https://tinify.dev/compare - how Tinify.dev pricing and behavior compare with TinyPNG, ShortPixel, and Kraken.io, including cost calculators. ## Guides - https://tinify.dev/blog - all guides. - https://tinify.dev/blog/what-is-compression - choosing between AVIF, WebP, JPEG, and PNG, and picking a compression mode. - https://tinify.dev/blog/what-is-resizing - responsive image dimensions and Core Web Vitals. - https://tinify.dev/blog/what-is-cropping - a practical crop, resize, compress, and API batch workflow. ## Project - GitHub: https://github.com/Stianlars1