Resize Signature to 10 KB – 20 KB
A signature photographed with a phone almost always carries grey paper texture, shadow gradients and a yellow cast, which is exactly what upload portals flag. This page opens the resizer with the signature cleaner switched on and the size bracket preset to 10–20 KB. The cleaner separates ink from paper, forces the background to pure white (or full transparency if you export PNG) and deepens the stroke so thin pen lines survive compression. Set the width and height your form requires, keep the aspect ratio lock on so the signature is never squashed, then export as JPG, PNG, WEBP or a single-page PDF. Every step runs inside your own browser using the Canvas API and Web Workers — no upload, no server, no account.
Drop images or a PDF to scan
Up to 30 pages · huge 108MP photos are auto-downscaled to keep your browser stable
Output & compression
Resize any photo to exact size & KB
Passport photos, signatures, thumb impressions — never stretched, never uploaded.
Smart Fit & Center is always on: photos of any shape are cropped or letterboxed, never stretched or squashed.
Dimensions
Fitting & cleanup
Output
- Resolution
- 413 × 531 px
- Format · DPI
- JPG · 300
- KB bracket
- 20 – 50 KB
- File size
- —
Frequently asked questions
Yes. Turn on the transparent background option and export as PNG; the alpha channel is preserved losslessly.