usefulweb.site Image Compressor

Audio, video & images

Image Compressor

Shrink JPG, PNG, WebP, AVIF or GIF images: convert, resize, strip metadata and compare sizes.

JPG, PNG, WebP, AVIF or GIF (first frame), max 30 MB. Processed on our server and deleted; the result can be downloaded for about 2 hours.

1 = smallest file, 100 = best quality. Ignored for PNG, which is always lossless.

px

Optional. Larger images are scaled down proportionally; smaller ones are never enlarged.

px

Optional. Applied together with the maximum width.

Try an example: PNG gradient to WebP · JPEG photo to a smaller JPEG, max 64 px wide

How it works

Re-encodes an image as WebP, AVIF, JPEG or PNG at the quality you choose, optionally scales it down to a maximum width or height and removes metadata such as GPS location. Shows the before/after size, the saving and the new dimensions, with a preview and a download.

  • The file type is detected from its first bytes, not from the file name; only JPEG, PNG, WebP, AVIF and GIF are accepted. For animated GIFs only the first frame is used.
  • ImageMagick decodes the image, applies the EXIF orientation, optionally scales it down (never up) to fit the maximum width/height, and encodes it in the chosen format. AVIF is encoded with libavif (avifenc) when it is installed.
  • Quality is passed to the encoder as is (1–100). PNG output is lossless, so quality does not apply; PNG is usually larger than WebP/AVIF for photos.
  • With "Remove metadata" on, EXIF/XMP/IPTC data (including GPS location and camera details), comments and embedded profiles are removed. Timestamps are never written, so the same input always gives the same file.
  • Files are processed in a private temporary folder that is deleted right after processing. The result is kept for about 2 hours so you can download it, then deleted.

Lossy formats (WebP, AVIF, JPEG) discard detail; keep your original.

For scripts and AI agents

  • JSON API: POST https://imagecompressor.usefulweb.site/api/v1/calculate (same calculation as this page)
  • Interface description: OpenAPI 3.1 · AI guide: llms.txt
  • MCP server (Streamable HTTP): https://imagecompressor.usefulweb.site/mcp · tool name image_compressor
Example request
curl -s -X POST https://imagecompressor.usefulweb.site/api/v1/calculate \
  -H 'content-type: application/json' \
  -d '{"file":{"filename":"gradient.png","contentType":"image/png","contentBase64":"iVBORw0KGgoAAAANSUhEUgAAADAAAAAgEAIAAACLJrAIAAAAvElEQVRo3u3ZIRLDMAxE0XZmPSqzUA4W3h40uVRwQgqEJcEE/HcCg7W1tt/Lsq7H8UJCNsd2fe9exnPJXPv5u3sZz0WCGrI5SFBBNrWdJCgl87FdJCgVW4wEpWRzbJxBOZmLKVZgijVii5GglGyOnSmWkzk9qBJXDRKUogc19HHRgwpxSJOgFE26IXN6UEU2RQ8q0KQb3MUa8WBGglLx5EqCUvSgRox5EpTiV6PBe1CDHtSQOT2oIpv8alT+GThGqh2cdAQAAAAASUVORK5CYII="},"format":"webp","quality":75}'
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