Signature Sizing & Form Compliance

Compress Signature to 10 KB & 20 KB Online

Compress a scanned signature with a 10 KB or 20 KB maximum. Check your form for its required format, dimensions and minimum file size.

A smaller file starts here.No sign-up

Maximum size

Drop your image here
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JPG, PNG or WebP → at most 20.0 KB

Max 15 MBMax 24 MPPaste from clipboard

01 · Choose your settings

Maximum size (KB)

KB

20,000 bytes maximum · 1 KB = 1,000 bytes

Output Format

Auto keeps JPEG inputs as JPEG and uses WebP for other inputs when supported. JPEG fallback uses a white background.

Zero server uploads: Processed in local browser memory

Decimal bounds: 20 KB = 20,000 bytes verified

Prepare a clear signature image, then check its file size and legibility. Crop or adjust the source in an image editor when needed.

This tool enforces a maximum file size only. If your form requires 10–20 KB, check that the actual result is also at least 10 KB. Crop and adjust contrast in an image editor before selecting the image here.

Preparing a Signature for Upload

If your form specifies a 10 KB or 20 KB maximum, select that target above. Follow the current instructions for your form and check any minimum size as well. Always inspect the signature for readable strokes.

Required Dimensions

Use the pixel dimensions and proportions requested by your form; there is no single standard for every portal.

Background Clarity

Use the ink and background requested by your form. Even lighting can make the signature easier to read.

Signature FAQ

How do I compress signature below 10 KB?

In the tool above, click the "10 KB" target button or enter "10" KB in the custom field. The compressor tests quality and dimensions, then offers a download only when the result is at most 10,000 bytes. Inspect the signature before using it.