Compress Image
Re-encodes your images at a quality you choose. Everything happens on your own machine, and if a file would come out bigger than it started, the original is kept instead.
- No upload
- No account
- No watermark
- No file limit
Your files
Nothing chosen yet.
Where your file goes
Nowhere. This page downloads a small program into your browser, and that program reads the file straight from your disk. The program comes from this site like any image or stylesheet — but your file only ever travels from your disk into your own browser tab.
Why this one
What you get that the big converters cannot offer.
Pick the trade-off yourself
A slider, not a mystery preset. Move it and see exactly how much you saved on each file.
Never returns a bigger file
Already-optimised images often grow when re-encoded. When that happens the original is handed back untouched.
PNG becomes WebP
For screenshots and graphics, WebP is far smaller than PNG at the same quality, and every current browser reads it.
The photos stay on your disk
No upload means no queue, no size cap, and no copy sitting on a server afterwards.
How to use it
Choose your images.
Set the quality slider — 70 is a good starting point.
Press Start, then download the smaller files.
When people use it
A form rejects your photo as too large
Upload limits of 1MB or 2MB are common on government and job sites. Drop the quality a little and it fits.
Making a page load faster
Photos straight from a phone are often several megabytes each. Most of that is invisible at screen size.
Emailing a batch of pictures
Mail servers usually cap attachments around 25MB. Compress first and the whole set goes in one message.
Questions
Will the picture look worse?
At quality 70 most photos are hard to tell apart from the original at normal viewing size. Move the slider up if you can see a difference.
Why did my PNG turn into a WebP?
PNG cannot be compressed much further without changing format. WebP gives a much smaller file at the same quality and is supported everywhere current.
Are the images uploaded?
No. They are decoded and re-encoded by your own browser.
What if compression makes it bigger?
Then you get the original back. That happens with images that were already optimised.
Is there a limit on how many?
No. Only your own memory.
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