Signature Image Resizer
Frame your scanned signatures. Pre-locked to a 3:1 landscape aspect ratio. Sized for web forms.
Tap to upload image
Supports JPG, PNG, WEBP, AVIF up to 20MB
Digital Signature Crop & Compression Guide
Prepare high-contrast, clean digital signature images under 20KB for employment, bank, or legal portals.
How to Compress Signature Image to 20KB
Upload a clean photo of your signature written on plain white paper. Use our pre-locked 3:1 signature crop aspect ratio to frame the signature tightly. The compressor will automatically reduce your signature file size to under 20KB, preserving black ink contrast and lines.
Tips for Perfect Signature Uploads
Write your signature with a black gel pen or marker on solid white paper in a well-lit room. Slicing away the surrounding page borders not only focuses on the pen strokes but drastically reduces the physical dimensions and storage footprint of your signature.