Image Compressor
Reduce JPG, PNG, and WebP file size dramatically without losing visible quality. Free batch image compressor running directly on your device with live file savings.
or drop files here
Accepts JPG, JPEG, PNG, WEBP · processed on your device, never uploaded
Advanced settings
Working…
Keep this tab open — the conversion runs locally on your device.
Done — ready to download
How to compress images
- 1
Add your images
Drop in the JPG, PNG, or WebP files you want to slim down. Batches work fine.
- 2
Dial the quality
Around 70% is the sweet spot for photos — visually identical, far smaller. Optionally resize.
- 3
Download smaller images
Each result shows exactly how much you saved. Download individually or grab a ZIP.
Features
Big savings, same quality
Reduce photo file size in KB or MB by 60–80% at default settings with no visible quality loss.
Honest savings readout
If an image is already optimized, we tell you — and hand back the original untouched.
Private by design
Compression happens in your browser. Personal photos never leave your device.
Optional resizing
Cap the width to make web-ready images that load in a blink.
How does image compression work?
JPG and WebP compression discards visual detail your eyes barely notice — tiny color shifts and fine textures. Lower quality means more discarding and smaller files. The trick is stopping before artifacts appear, which is what the quality slider controls.
- 70% quality: visually lossless for most photos
- 50% quality: noticeable on close inspection, tiny files
- PNG stays lossless — savings come only from resizing
When should I compress?
Before uploading to websites, attaching to emails, or sending over slow connections. Sites load faster with smaller images; email attachments clear limits instead of bouncing.
- Web images: compress + cap width at 1600–2000px
- Email attachments: 60–70% quality is plenty
- Archive originals first if they are one-of-a-kind
Frequently asked questions
How much smaller will my images get?
Most photos from phones and cameras shrink 60–80% at the default 70% quality with no visible change. Screenshots and graphics vary — PNGs with flat colors often benefit most from converting to WebP.
How can I compress photos to a specific file size under 100 KB or 200 KB?
Adjust the Quality slider downward (e.g. to 50–60%) and set a maximum width (such as 1200 or 1600 px) under Advanced settings. The live savings readout shows the exact output size for each image so you can achieve your target size.
Will compression damage my images?
JPG and WebP compression is lossy, but at 70%+ quality the difference is invisible in normal use. We never overwrite your originals — compressed copies download as new files, and if compression would not help, you get the original back untouched.
Are my images uploaded to a server?
No. Compression runs entirely in your browser. The files are processed in memory on your device and downloaded straight back to you.
PNG or WebP for the smallest files?
WebP usually beats PNG by 25–50% on the same image and supports transparency too. Switch the output format to WebP for graphics-heavy PNGs.
Can I resize images while compressing?
Yes. Set a maximum width under Advanced settings — great for making web-ready images, since resizing alone often saves more than compression.
Want every tool, with zero uploads?
FreeConvert runs entirely in your browser. Pick a file, get a result — nothing ever leaves your device.
Start converting