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Image Compressor

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Compress JPEG, PNG, and WebP images entirely in your browser with a quality slider and a live before/after file size comparison. No upload, no file count limits.

How it works

  1. Upload or drag in an image
  2. Drag the quality slider and pick an output format — file size updates live
  3. Download the compressed image once you're happy with the size/quality tradeoff

Frequently asked questions

Is my image uploaded to a server?

No — compression happens entirely in your browser using the Canvas API. Your image never leaves your device.

Is there a limit on how many images I can compress?

No count limit — you're only limited by your browser's memory.

Does PNG compress as much as JPEG?

Usually less — PNG is designed to be lossless, so its size reduction from quality/re-encoding settings is typically smaller than JPEG or WebP.

How much quality will I lose?

You control it directly — the quality slider shows the resulting file size in real time so you can find the balance you want before downloading.

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From the blog

Most online image compressors upload your photo to a server first — even for a quick shrink
image

Most online image compressors upload your photo to a server first — even for a quick shrink

Checked directly, popular free image compressors process files server-side, which means a batch limit (often 20 images at a time) and your photo leaving your device even for basic quality-slider compression. This one runs entirely in the browser instead.

2026-09-19

Update history

  • 2026-09-19 Launched: client-side canvas image compressor (JPEG/WebP/PNG) with quality slider and live before/after file-size comparison, no upload.