Image Resize & Compression APIs
Resize and compression APIs here all run freemium plans with an API key, and they differ mostly in workflow. CheetahO and Tinify.dev optimize the files you send, with Tinify.dev converting to AVIF and WebP through async jobs, while PixelVault and apilayer's Image Upload host the result and return a URL, PixelVault resizing on the fly from its CDN.
| API | Pricing | Auth | Format | Free tier | Status |
|---|---|---|---|---|---|
CheetahOOptimizes and resizes JPEG/PNG/GIF images with lossy or lossless compression and WebP output. Media & Entertainment › Images & Photos | Freemium | API key | JSON | <100/day | Live |
Image UploadUploads, resizes, crops and edits product images, returning a hosted URL for the result. Media & Entertainment › Images & Photos | Freemium | API key | JSON | <100/day | Untested |
PixelVaultUpload images via API and get CDN URLs with on-the-fly resize, crop, format and background removal. Media & Entertainment › Images & Photos | Freemium | API key | JSON | <100/day | Live |
Tinify.devCompresses, resizes, crops and converts images (AVIF/WebP/JPEG/PNG) via async jobs. Media & Entertainment › Images & Photos | Freemium | API key | JSON | <100/day | Live |
CheetahOFreemiumLive
Optimizes and resizes JPEG/PNG/GIF images with lossy or lossless compression and WebP output.
API key · JSON
<100/day
no machine-readable spec
Image UploadFreemiumUntested
Uploads, resizes, crops and edits product images, returning a hosted URL for the result.
API key · JSON
<100/day
no machine-readable spec
PixelVaultFreemiumLive
Upload images via API and get CDN URLs with on-the-fly resize, crop, format and background removal.
API key · JSON
<100/day
OpenAPI spec · llms.txt
Tinify.devFreemiumLive
Compresses, resizes, crops and converts images (AVIF/WebP/JPEG/PNG) via async jobs.
API key · JSON
<100/day
MCP server · llms.txt
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Choosing an Image Resize & Compression API
Is there a free Image Resize & Compression API?
Yes. Tinify.dev, CheetahO, PixelVault and Image Upload have a free tier alongside paid plans.
Which Image Resize & Compression APIs work without an API key?
All of them need a key or account. Tinify.dev, CheetahO, PixelVault and Image Upload give one out free when you sign up.
Can I use Image Resize & Compression APIs in a commercial project?
CheetahO and PixelVault permit commercial use.
Which Image Resize & Compression APIs work with AI agents?
Tinify.dev has an MCP server, so an AI agent can call it directly. PixelVault publishes an OpenAPI spec for generating clients and tools.
Broader: Images & Photos APIs · Media & Entertainment APIs
More in Images & Photos: Stock Photos APIs · Placeholder Images APIs · Avatars APIs