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Image compression

Shrink file size with a quality slider.

Files

0.8

About this tool

Shrink JPEG and PNG files with a quality slider that shows the trade-off as you move it. Compression runs on your own machine, so even sensitive images stay private.

Why use it

  • Smaller files load faster and improve your page speed and Core Web Vitals.
  • Fine-grained quality control instead of a fixed, lossy preset.
  • Batch several photos and download each optimized result.

Common use cases

  • Trim product photos before uploading them to an online store.
  • Fit an image under a forum or email attachment size limit.
  • Lighten blog images so mobile readers do not wait on slow downloads.

Tips

  • Around 70–80% quality is usually invisible to the eye but cuts size sharply.
  • Resize oversized photos first; dimensions affect file size more than quality.
How to use
  1. Select an image.
  2. Tune quality lower for smaller files.
  3. Download the JPEG result.
FAQ
How does compression shrink my image?
It re-encodes the picture at a smaller size and quality you control, cutting file size while keeping it usable.
Are images sent to a server to compress?
No. Everything is processed in your browser, so the original never leaves your device.
Will the photo look noticeably worse?
At moderate settings the difference is hard to see; lower quality only if you need a very small file.
What size reduction can I expect?
Photos often drop 60–80% depending on content and the target quality you choose.
Can I compress PNG files too?
Yes, though JPG and WebP usually compress photos far better than PNG.
Is there a file size limit?
There is no server limit; very large images just take a little longer to process locally.

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