Compress Image to Under 20KB
Designed for digital signature uploads and strict exam portals that enforce a 10KB–20KB cap. PixSip pairs MozJPEG binary search with smart resolution scaling so signatures stay legible under 20,000 bytes.
Capabilities and limits verified November 5, 2026. Resolved from the live plan configuration.
Drop images here
Up to 20 images, max 5 MB each.Get Web Pro
Batch upgrade
Process more at once
Up to 500 images per batch, 150 MB each, with folder uploads.
How to compress an image to 20 KB
- 1
Add your image
Choose a JPG, PNG, WebP, AVIF, HEIC, or JXL image. You can process a full batch in one pass.
- 2
Fit 20,000 bytes
PixSip searches encoder quality first, then proportionally reduces dimensions only when needed to satisfy 20,000 bytes.
- 3
Check and download
Review the exact output size and download one file or the whole batch as a ZIP.
Exact size without trial and error
A real byte ceiling
The output is measured against 20,000 bytes, not a rounded estimate shown after encoding.
Highest useful quality
A binary search keeps the highest encoder quality that fits before any resolution reduction is attempted.
Private local processing
Sensitive signatures, ID scans, and application photos are encoded on your device and never uploaded.