Free Image Compressor
Something not working? Report a problem
About the Image Compressor
Compress JPG, PNG and WebP images right in your browser — shrink to a target file size or fine-tune quality, with no upload and no quality loss you can't control.
How to use the Image Compressor
- 1Drop in your images, paste one, or click to browse — JPG, PNG, WebP and iPhone HEIC photos all work, and everything stays on your device.
- 2Choose an output format, then pick a mode: aim for a target file size (tap a preset like 100 KB, or type your own in KB or MB) or set the quality yourself.
- 3See the new size, dimensions and how much you saved for each image — click a thumbnail to compare before and after side by side.
- 4Download images one at a time, or grab every compressed copy at once as a ZIP.
Frequently asked questions
Is this image compressor free?
Yes — completely free with no sign-up, no watermark and no limit on how many images you compress.
Are my images uploaded to a server?
No. The compressor runs entirely in your browser using your device's own processing — your images never leave your computer or phone.
How do I compress an image to a specific size, like 100 KB?
Switch to Target size mode and either tap a preset or enter the size you want in KB or MB. The tool automatically finds the highest quality that fits under your target. This works for JPG and WebP; PNG is lossless and can't be squeezed to an exact size, so the tool will offer to switch those images to JPG.
Can I check the quality before I download?
Yes. Click any image's thumbnail to open a before-and-after view with a divider you can drag across the image. Switch it to actual size (100%) to judge fine detail — compression artifacts are invisible at thumbnail scale.
Can I compress iPhone HEIC photos?
Yes. HEIC and HEIF photos are decoded in your browser and saved as JPG or WebP, which every app and website can open.
Which format should I choose?
JPG is best for photos and gives the smallest files. WebP compresses even better and is supported by all modern browsers. PNG is lossless — use it only when you need sharp edges or transparency, as it produces larger files.
Will compressing reduce my image quality?
You're in control. In Quality mode you set exactly how much to compress; in Target size mode the tool keeps quality as high as possible while meeting your size limit, and tells you which quality it landed on. Compressing to PNG stays lossless.
Does this change the image dimensions?
No — the compressor keeps the original width and height and only reduces the file size, and shows you those dimensions alongside each result. If you also need to change dimensions, use a dedicated image resizer.