Images tool

Compress images without uploading them.

Drag in up to twenty images, choose a quality, and download them smaller. The files never leave your device — the compression happens in this tab.

Free, no sign-up
Nothing is uploaded
No watermark, no limits

Image compressor

Free

Drop images here or click to choose — nothing leaves your device

Quality 80% Lower quality means a smaller file. 70–80% is the usual sweet spot.

Output format

WebP is usually 25–35% smaller than JPG at the same quality.

Runs entirely in your browser. Nothing is uploaded. Up to 20 images at a time

Worth knowing

How to get this right.

01

Pick a format before a quality
WebP beats JPG by roughly a third at the same visual quality and every current browser reads it. Use JPG only if something in your stack still cannot. PNG is lossless, so the quality slider does nothing for it — it will still usually shrink, because re-encoding strips whatever metadata the original was carrying.
02

80% is where to start
Below about 60% you start seeing blocking around hard edges and text. Above 90% the file grows quickly for a difference nobody can see. Compare at 100% zoom, not at thumbnail size, or you will convince yourself 40% looks fine.
03

Resize first, then compress
A 4000px photo displayed in a 800px column is wasting three quarters of its bytes no matter how you compress it. Run it through the resizer first — that single step usually saves more than any quality setting.

Questions

About this tool.

Are my images uploaded anywhere?

No. The compression runs in your browser using the canvas API. Nothing is sent to a server, which is also why it keeps working if you go offline after the page has loaded.

Is there a file size or count limit?

Twenty images at a time, to keep the tab responsive. There is no size limit beyond what your device's memory allows — very large photos simply take a moment.

Why did my PNG get bigger?

Canvas re-encodes a PNG from scratch. If the original was already optimised by a dedicated tool, ours can come out slightly larger. Convert it to WebP instead and it will almost always shrink.

Does compressing remove EXIF data?

Yes. Re-encoding drops all metadata, including GPS coordinates from phone photos. That is usually what you want before publishing an image.

More free tools