Compress Image
Compress JPG, PNG and WebP images up to 80% smaller with no visible quality loss. Free batch compressor that runs in your browser — files are never uploaded.
- No upload — 100% private
- Instant, on your device
- Free, no sign-up
- Works offline once loaded
How it works
How to use Compress Image
Drop one or more JPG, PNG or WebP images onto the page.
Pick a quality level — 70–80% is the sweet spot — and optionally a maximum width.
Drag the before/after slider to check the result and see how many KB you saved.
Download each image, or everything at once as a .zip.
Why use it
Why use our Compress Image tool
Before/after slider
Compare the original and compressed image pixel-for-pixel before you download, so you never ship a blurry photo.
Batch compression
Compress dozens of images in one go with live per-file savings and a single zip download.
Convert while compressing
Keep the original format or switch to WebP or JPG — WebP is often 30% smaller than JPG at the same quality.
Never bigger than the original
If an image is already optimised, we hand back the original instead of a larger re-encoded copy.
Fast and private
Compression runs in a background thread on your device. Nothing is uploaded, so it works even offline.
FAQ
Frequently asked questions
What quality setting should I use?
For photos, 70–80% usually cuts the file size by 60–80% with no difference you can see at normal viewing size. Go lower for thumbnails, higher for images people will zoom into.
Why does my PNG barely get smaller?
PNG is a lossless format, so re-saving it can't throw away detail. Convert it to WebP (which keeps transparency) or JPG (for photos without transparency) to get large savings, or set a maximum width.
How do I compress an image to under 100 KB or 200 KB?
Lower the quality and limit the width, then check the size shown for each file. A 1200 px wide photo at 70% quality is typically 100–200 KB as JPG and even smaller as WebP.
Does compressing remove EXIF data like GPS location?
Yes. Images are re-drawn and re-encoded, which strips EXIF metadata including camera details and GPS coordinates — a nice privacy bonus before posting photos online.
Are my images uploaded to a server?
No. Compression happens entirely in your browser using the Canvas API and a Web Worker. Your images never leave your device.
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