Signature Between 20KB and 50KB

When a form asks for a signature of at least 20 KB and no more than 50 KB, this page produces a file inside that window with a clean white background.

Choose your file

Pick from your files or gallery. You can also drag a file here.

Required size range

We create the highest-quality file possible within this limit.

Minimum (KB)

Maximum (KB)

Required dimensions (optional)

Only if your form states pixel sizes. We crop from the centre — the image is never stretched.

Width (px)

Height (px)

Private by design. This tool runs entirely inside your browser — your file is never uploaded to us or to any other server. How this works

No signup
Free to use
Processed in your browser
No watermark

What this tool produces

Required range: 20 KB minimum, 50 KB maximum (editable).
Output format: JPG on a white background.
Take the photograph square-on so the strokes are not skewed.
Supports JPG, JPEG, PNG, WebP and other image formats your browser can open. iPhone HEIC files must be shared as JPG first.

How to use this tool

Upload a photo or scan of your signature.
Set the range your notice specifies.
Press Prepare image.
Download the JPG.

What this tool changes

The pixels of your signature are preserved; only the stored detail changes. Extra headroom at 50 KB means the strokes stay smooth rather than jagged.

Common upload problems

Result stays below 20 KB: Very clean scans compress extremely well. Upload the original camera photo instead of a screenshot or a WhatsApp copy.
The signature is cut off at the edge: Leave a small white margin around the strokes when photographing the paper.

Frequently asked questions

Do banking application forms use this range?: Ranges vary by notice and can change between cycles. Always read your own application notice and enter the figures it gives.
Is a WhatsApp forwarded image fine?: It is already compressed and often too small. Use the original file for a better result.