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Image Compressor & Resizer: how to use it (and pick the right settings)

A short guide to shrinking images in your browser — choosing a format and quality, when to resize, and why processing locally keeps your photos private.

Open the Image Compressor →

What this tool does

The Image Compressor & Resizer re-encodes your image at a smaller file size, and can shrink its dimensions at the same time. It uses the browser's Canvas API to redraw the image and export it as JPEG, WebP, or PNG — all on your device, with no upload. You see the new size instantly and can download the result.

How to use it

  1. Open the Image Compressor and choose an image.
  2. Pick an output format (WebP for the smallest files, JPEG for maximum compatibility, PNG for lossless graphics).
  3. Adjust Quality — lower means a smaller file (JPEG and WebP only).
  4. Optionally set a Max width to resize large photos; the height scales automatically.
  5. Check the size saved, then click Download.

Choosing format and quality

  • WebP — usually the smallest at a given quality; supported everywhere modern.
  • JPEG — the safe, universal choice for photographs.
  • PNG — lossless; best for logos, screenshots, or images with transparency, but larger than the others.
  • Quality 70–85% is usually visually identical to the original for photos while cutting size dramatically.

Why compress images

  • Faster-loading web pages and better search rankings.
  • Staying under upload limits on forms, marketplaces, and email.
  • Saving storage and bandwidth when sharing lots of photos.

Your photos stay private

Because the work happens in your browser, your image never leaves your device — there's no server to upload to. That's a genuine privacy advantage over tools that process images in the cloud, and it's why this one works offline once the page has loaded.

FAQ

Are my images uploaded anywhere?

No. They're processed locally with the Canvas API; the file never leaves your device.

Which format should I choose?

WebP for the smallest files, JPEG for compatibility, PNG for lossless graphics.

What quality should I use?

70–85% is a sweet spot for photos — big savings with little visible loss.

Ready to try it? Open the Image Compressor →

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