Compress Image to 100 KB
Reduce a photo or signature to under 100 KB for forms and uploads. Keeps the best quality that fits, right in your browser, nothing uploaded.
Runs in your browser. Nothing is uploaded.
About the Compress Image to 100 KB
A 100 KB limit is common on job portals, scholarship and university forms, and for scanned documents such as certificates or ID cards uploaded as images.
Upload forms check the file size, not how the picture looks, so a photo that is 2 MB from your phone is rejected even if it looks fine. This tool measures the real file as it compresses: it tries the highest JPEG quality first, lowers it step by step until the file is under 100 KB, and makes the image smaller only if quality alone is not enough. Scanned documents with text stay readable at 100 KB at around 1000–1200 px wide. If text looks blurry, crop the margins before compressing.
How to use the Compress Image to 100 KB
- 1
Drop your photo, signature or scan on the page. The target is already set to 100 KB.
- 2
Wait a moment: each image is fitted under 100 KB at the best quality that fits.
- 3
Check the result next to each image: its final size, quality and dimensions.
- 4
Download the image, or all images as a ZIP if you added several.
- 5
Need a different limit? Change the target size or switch to Quality mode.
Examples
100 KBat most 100,000 bytesGood to know
- PNG files are saved as JPG in target mode, since PNG has no quality setting to lower. Transparent areas become white.
- If an image cannot reach 100 KB even at a very small size, the smallest version is offered and clearly marked as still too big.
- Some forms also need exact pixel dimensions. Use Resize Image or Passport Photo Maker first, then compress.
Frequently asked questions
Will text in a scanned document stay readable?
Usually, yes. 100 KB is enough for a full page at a readable size. If it is not, the tool tells you the final pixel size so you can judge, and cropping margins first frees up space for the text.
How do I get exactly 100 KB?
Forms ask for a maximum, so the tool keeps the file at or just under 100 KB at the highest quality that fits. It never goes over the limit.
Does it work on my phone?
Yes. Choose a photo from your gallery or take one with the camera. Everything runs in the phone's browser, so it also works on a slow connection once the page has loaded.
Are my files uploaded?
No. Files are opened and processed in your browser, in a background thread. Nothing is uploaded, so the tool also works for confidential documents.
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