How to use it
- Choose one or more images.
- Enter the limit from the form, or press a common size.
- Press Compress. Each image gets a download link, and several images can be downloaded together as a ZIP.
How it works
The tool first tries the highest JPEG quality that fits. If even low quality is too big, it reduces the pixel size a step at a time and tries again, so you get the largest, sharpest image under your limit. It aims about 2% under the limit to be safe.
Getting the best result under a limit
- Crop first. Empty margins around a scanned document still cost space. Cropping to the paper keeps more detail for the part that matters.
- Scans of text survive more compression than photos. A typed page is often readable at 50 KB; a photo of a face needs more.
- Set the largest side if the form also gives pixel dimensions. Shrinking the image to the size the form will display uses the budget better than heavy JPG compression.
Limits
- Very small limits (under about 20 KB) make photos visibly blocky. Check the preview.
- Transparent PNGs get a white background when saved as JPG, because JPG has no transparency.
- If a form needs exact pixel dimensions, enter the largest side, or use the passport and visa photo maker for official photo sizes.
Questions
What's the difference between KB and kB?
Forms may mean 1,000 or 1,024 bytes. This tool counts 1 KB as 1,000 bytes and stays a little under, so the file fits either way.
Should I choose JPG or WebP?
JPG works everywhere and is what most forms want. WebP is smaller at the same quality, but older systems and some upload forms don't accept it.
Does it work with iPhone photos?
Yes. HEIC photos are converted in your browser. The first HEIC file takes a moment longer while the decoder loads.
Last updated 2026-10-23.