Image Compressor
Make image files smaller — for uploads, email and faster pages — without sending them anywhere.
Your image is processed entirely in your browser — it is never uploaded to a server.
About this tool
Compression here means re-encoding the image at a lower quality setting and, optionally, a smaller size — the two levers that actually shrink image files. The result message always shows the before-and-after size, so you can retry with different settings until the trade-off suits you.
Honest notes: PNG output is lossless, so the quality slider does nothing for PNG — capping the width is how you shrink a PNG. And compressing an already-small file can occasionally make it bigger; the tool will tell you plainly when that happens.
How to use it
- Choose an image (JPG, PNG, WebP or AVIF).
- Pick a format and quality — 80% is the sweet spot for photos — and optionally a max width.
- Press Compress Image and check the size saving.
Frequently asked questions
What quality setting should I use?
80% for photos: typically half to a third of the file size with no visible difference. 60–70% when size matters most. Below 50%, expect visible softness.
Why didn't my PNG get smaller?
PNG is lossless — there is no quality to trade away. Set a max width, or switch the output to JPG/WebP for photos.
Is my image uploaded?
No — compression runs in your browser.