A 20 KB limit is common on recruitment and exam portals, such as public service commission, staff selection and university entrance forms, where you must upload a scanned signature, a thumb impression or a small passport-style photo. Phone cameras produce files of 2–5 MB, so the picture has to be reduced around one hundred times without losing legibility.
This page is preset to 20 KB. It finds the best JPG quality that fits under the limit and, if needed, lowers the pixel size so that the signature strokes stay crisp rather than turning into blocky noise. The file is processed on your own device, which matters when the image is your signature.
How to use the Compress Image to 20KB tool
- Scan or photograph your signature on plain white paper in good light, then crop away the empty margins.
- Drop the image onto the box above. The target is already set to 20 KB.
- Wait a moment while the tool finds the right quality and size.
- Check the result: the signature should be readable and the size shown below 20 KB.
- Download the JPG and upload it to your application form.
Why use ToolOrca Compress Image to 20KB
- Preset to just under 20 KB
- Keeps signature strokes readable
- Downscales automatically when needed
- Works on phone photos and scans
- Several files at once
- Your signature never leaves your device
Tips for signatures and thumb impressions under 20 KB
Most portals ask for a signature around 140 × 60 px or a similar small size, so a tight crop is the single most important step. Crop the image so the signature fills the frame; empty paper still costs bytes. Use a black or dark blue pen on white paper and avoid shadows, because gray backgrounds and noise make JPG files larger.
For a small photo, many forms specify both a file size (for example 10–20 KB) and dimensions (for example 200 × 230 px). Resize to the required pixel size first with the Resize Image tool, then compress here. Always read the instructions on your own form, as limits differ between organisations and change from year to year.
Frequently asked questions
Why is my signature rejected even though it is under 20 KB?
Many forms also check the pixel dimensions or the minimum size, for example "between 10 KB and 20 KB" and "140 × 60 px". Check both rules and resize first if needed.
Will the signature become blurry?
A cropped signature on white paper easily fits in 20 KB at a good quality. Blur usually happens when a large uncropped photo has to be squeezed, so crop the margins first.
What format should I use for exam forms?
Almost all exam and recruitment portals accept JPG or JPEG, which is the default output here. WebP is often not accepted by government sites.
Is it safe to compress my signature online here?
Yes. The image is processed by your browser and is never uploaded, stored or seen by anyone else.