When Do You Need an Image Under 20KB?
Reaching a file size of strictly under 20 Kilobytes (20 KB) is one of the most challenging compression tasks for job candidates. Most official exam registration systems enforce a strict 10KB to 20KB maximum ceiling specifically for scanned signatures and thumb impressions to prevent database bloat.
How to Get Clean Scanned Signatures Under 20KB:
- Sign with black ink on crisp white unlined paper for maximum contrast.
- Crop closely around the signature boundary to eliminate wasted empty margins.
- Upload the photo to this tool. Our algorithm will preserve the dark stroke weight while compressing the white background down to under 20KB.