Compress scanned signatures, thumb impressions, and micro-photos to 20KB or less online. Instant, accurate, and completely free.
Optimized for Digital Signatures and Thumb Scans
Many online registration portals mandate that applicant signature scans and thumbprints be smaller than 20KB (often between 10KB and 20KB). Hitting such a tiny file size without turning the signature into illegible smudge is a common challenge.
Our 20KB compressor is tuned specifically for high-contrast lines and signatures. It preserves stroke continuity and ink edges while bringing file weight below the 20KB boundary.
How to Compress a Signature or Photo to 20KB
Get your 20KB file in seconds:
Upload Signature or Photo
Drop your scanned signature or small picture into the box.
Precision 20KB Processing
The compressor adjusts resolution and encoding to guarantee an output under 20KB.
Download & Submit
Save your file and upload it directly to your application portal.
Key Advantages of the 20KB Compressor
Get approved on your first upload without rejection:
Frequently Asked Questions
Everything you need to know about using the Compress Image tool on TinyImageResizer
Can I compress my signature to under 20KB?
What happens if my original photo is very large?
Is it safe to compress my signature here?
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