Compress Image Online Free — Reduce Image Size
Shrink your JPG, PNG or WebP photos to a smaller file size in seconds. Free, no sign-up, and your images never leave your device.
✦ Free forever • No sign-up • No upload • No watermark
Compress Image — Free, No Sign-Up
Choose one image, move the quality slider, and press Compress. The result shows the exact size saved.
How to use Compress Image
Choose your image
Click the box above or drop one image onto it. JPG, PNG, WebP and GIF all work.
Pick a quality
Move the quality slider. Lower quality means a smaller file — 80 is a good balance for photos. The exact saving is shown before you download.
Download the smaller image
Press “Compress Image”. The compressed image downloads instantly, at the same width and height as the original.
Example: Example: a 2.4 MB holiday photo at quality 75 becomes about 380 KB — the same 4000×3000 picture, just a much smaller file.
About Compress Image
Large photos slow down websites, fill up inboxes and eat phone storage. ImageTools compresses your images right in your browser: the picture is re-encoded at the quality you choose, and the smaller file downloads in seconds. The width and height never change — only the file size shrinks — so a compressed photo still looks like the same photo.
There is no upload, so your pictures never leave your device, and there is no watermark, no limit and no account. Compression works best on photos (JPG and WebP); PNG screenshots with flat colours compress less, because PNG is already lossless — the tool shows you the honest result either way, including when a file cannot get any smaller.
Frequently asked questions
How do I compress an image online?
Choose your image, move the quality slider to the level you want, and press “Compress Image”. The smaller file downloads immediately.
Will compressing reduce the image quality?
A little, at low quality settings — that is how compression works. At quality 80–85 most photos look identical to the original while the file gets much smaller.
Does compression change the image size in pixels?
No. The width and height stay exactly the same. Only the file size (kilobytes) gets smaller.
Is compressing images free?
Yes. Compressing images on ImageTools is 100% free. There is no paid plan, no limit and no watermark.
Do my images get uploaded?
No. The compression happens entirely in your browser. Your images never leave your device and nothing is stored on any server.
Which formats can I compress?
JPG, PNG, WebP and GIF. The result is saved as JPG, PNG or WebP — you choose the output format, or keep the original one.
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