Compress JPEG
Shrink a photo to an exact KB or MB target.
- Add images by dropping, choosing or pasting them.
- Adjust the options — everything previews on your device.
- Run, compare before and after, then download or share.
Compressing JPEG files
This preset keeps the output in JPEG and shrinks the file to the size limit you type. JPEG compression works differently from other formats, so the search tunes the settings that matter for it: quality and chroma for lossy encoders, palette and filtering for lossless ones, and dimensions as a last resort. Metadata such as EXIF is dropped unless you need it, which alone can save hundreds of kilobytes on phone photos. Nothing is uploaded; the encoder runs in a Web Worker on your device.
Who needs this
Web designers trimming page weight, sellers preparing product shots, students and applicants who must stay in JPEG for a form, and anyone whose camera roll produces files far larger than they need to be.
Compress image
Enter any size limit — 20 KB, 150 KB, 1 MB — and the compressor searches quality and dimensions to land just under it while keeping as much detail as possible. Works with JPG, PNG, WebP, HEIC and more.
How it works
- Add images by dropping, choosing or pasting them.
- Adjust the options — everything previews on your device.
- Run, compare before and after, then download or share.
More presets
Frequently asked questions
Why is my JPEG so large in the first place?
Cameras save at maximum quality and resolution, often with embedded metadata and a preview. Most uses need a fraction of that detail, so a smart re-encode removes size you will never see.
Is JPEG compression lossless?
PNG is lossless, so size comes from a smaller palette and better filtering. JPEG and WebP are lossy, trading invisible detail for size. The slider shows you the difference before you download.
Should I switch from JPEG to another format?
If the destination accepts it, WebP is usually 25 to 35 percent smaller than JPEG at the same quality and supports transparency. Keep JPEG when a form or system requires it.
Does transparency survive?
PNG and WebP keep transparent areas. JPEG has no alpha channel, so transparent pixels are flattened onto the background colour you pick.
How small can I make an image?
Any size above about 1 KB. Type the limit, and the compressor searches JPEG or WebP quality first, then reduces dimensions only when quality alone cannot reach it. The result lands at or just below your target.
Will my photo lose quality?
Some detail is traded for size, but the search keeps the highest quality that still fits. Use the before/after slider to check, and pick a larger target if you need more detail.
Is my image uploaded to a server?
No. Compression runs inside your browser with Web Workers, so nothing is uploaded. With Pro, the installed app also works with no internet connection at all.