Resize signature to 50 KB
Make a wide signature JPEG between 10 and 50 KB. The tool starts at 400×160 pixels; change it if your form prints an exact signature size.
Sign in black ink on plain white paper, in good light, and photograph it with the phone held flat above the page.
Drop an image here or use the button below
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What usually goes wrong
Shadows from your hand or phone, lined paper and a tiny signature in a big frame are the usual misses.
What this page checks
You set the output width, height and KB range. The tool crops a wide strip and fits the JPEG inside the range.
How to prepare the file
- Check the current official instructions for your exam or application.
- Choose the correct image and adjust the crop so the document fills the guide.
- Make the JPEG, then check the downloaded file’s dimensions and file size before uploading it.
This tool can check the exported JPEG dimensions and byte size. It cannot confirm identity, image recency, face position, background rules, handwriting, or acceptance by the exam portal.
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