Resize Signature
Get a scanned signature down to the small, wide dimensions upload forms expect.
Signatures Have Their Own Shape and Their Own Limits
A signature is wide and short, which is why forms specify it separately from the photo and why a square size would never suit it. This page starts at 300 × 100 pixels, a common default that keeps the strokes legible without wasting space. The other half of the requirement is almost always file size: 10 KB to 20 KB is the usual band, and a signature meets it easily because it is mostly white paper with a few dark strokes. Scan on plain white, resize here, then use the 10 KB or 20 KB compressor to finish. Nothing is uploaded at any point, which is worth knowing when the file is your actual signature.
How to Resize an Image
Upload your image
Choose a JPG, PNG, WebP, or GIF file. The tool shows its original dimensions and file size straight away.
Enter the new size
Pick a unit, type a width or height, and leave the lock on to keep the proportions. Presets like 300 × 300 and 1920 × 1080 are one tap away.
Download the resized image
Choose an output format and quality, then save the file at exactly the dimensions you set.
Signature Upload Requirements
- Exam and university application signature fields
- Job portal profiles that store a specimen signature
- Bank and KYC forms requesting a scanned signature
- Digital forms that print your signature onto a document
- Membership and registration paperwork
- Re-submitting a signature rejected for being too large
Resizing a Signature
What size should a signature image be?
Check your form first, but 300 × 100 pixels at 10-20 KB satisfies the majority of portals. Some ask for wider, such as 140 × 60 or 400 × 150.
How do I get it under 20 KB?
Resize here, then use the 20 KB compressor. A signature on white paper compresses very well because there is so little detail to encode.
Should the background be white or transparent?
White is safest - most portals expect a JPG on a plain white background. Transparency requires PNG and is often not accepted.
Is my signature safe here?
Yes. The resize happens on a canvas inside your own browser, so the scan is never uploaded or stored anywhere.
Related tools
Compress Image to 10KB
Squeeze a photo down to a 10 KB JPG - the size scanned signatures and thumb impressions are usually capped at.
Compress Image to 20KB
Get any photo under 20 KB - the standard cap for signature uploads on exam and job portals.
Resize Image to 200x230
Hit the 200 × 230 pixel photo size that government job portals and exam forms specify.