Compress an Image
Cut a file down to size in the browser and watch the number fall as you drag — before and after, in kilobytes, live.
Free preview · No signup · ~10 seconds
Drop a PNG, JPG or WebP
PNG, JPG, WebP or SVG — up to 20 MB
Runs entirely in your browser. Your image is never uploaded.
What actually makes an image smaller
The number is the point
Most compressors ask you to guess a quality setting and find out afterwards whether you guessed right. This one shows both sizes on the panes as you drag, so you can stop at the moment the file is small enough rather than at an arbitrary percentage.
The format decides the ceiling
Quality alone only goes so far. A photograph saved as PNG is large no matter how you set the slider, because PNG stores every pixel exactly. Switching that same photo to JPG or WebP is usually a bigger saving than any quality adjustment.
Where to stop
For photographs, 70 to 80 is the sweet spot — most of the saving, none of the visible damage. Below about 60 the blocks start showing in flat areas like skies. Logos and screenshots behave differently: they have hard edges, so they need 85 or above, or they should stay PNG.
Transparency has a cost
JPG produces the smallest files but cannot store transparency, so a knocked-out image gets flattened onto white. WebP is the compromise: much smaller than PNG, and it keeps the alpha channel.
Compression is one-way
The detail a lossy encoder discards is gone. Keep the original and treat every compressed file as a delivery copy for one destination — never compress a file that has already been compressed.
Which format compresses best
JPG
Smallest, no transparency
- Best for photographs
- No alpha channel
- Blocks show below quality 60
- Universally supported
Photos going into email, forms and listings
Logos, screenshots, anything with hard edges
WebP
Small and keeps alpha
- Much smaller than PNG
- Transparency supported
- Handles hard edges better than JPG
- Browsers only
Anything you serve on your own website
Files you hand to a print shop or older software
PNG
Lossless, largest
- Quality slider barely helps
- Pixel-exact
- Transparency supported
- Opens everywhere
Screenshots, flat graphics, working masters
Getting a photograph under a size cap
How to compress an image
Upload the image
PNG, JPG or WebP. Its size appears on the left pane straight away.
Pick a format and quality
Drag the slider and watch the result size update. Stop when it is small enough and still looks right.
Download
Free preview, or the full-resolution compressed file in the app.
When the file size is the problem
Email attachment limits
Get a photo under a gateway cap without cropping it.
Page speed work
Cut the weight of an image that is slowing a page down.
Upload size caps
Meet a form that refuses anything over a few megabytes.
Marketplace listings
Fit product photos inside a platform size limit.
Or just ask
Describe the edit in your own words
Type what you want changed and the assistant does it on the canvas — each step lands as a layer you can reopen, so nothing it does is baked in.
No edits yet.
Frequently Asked Questions
Related Tools
Guides worth reading
What to DIY and What to Pay a Designer For
Where design money actually earns its return at pre-seed, where it doesn't, and the honest line between the work worth commissioning and the work worth doing yourself.
Making Your Pitch Deck Look Consistent (Logos, Screenshots, Charts)
Why a deck looks amateur even when every slide is fine on its own — and the four mechanical fixes that make forty slides read as one document.
What Your Developer Actually Needs From Your Logo
The handoff spec nobody writes down: which logo file goes in which slot, why the 4 MB PNG breaks the header, what an OG image is, and the five files that end the back-and-forth.
Compress your image
Watch the size fall and stop where it still looks right.