How to Resize Signature for Online Forms (20KB Limit)
Summary: Most online forms (PAN, Aadhaar, SSC, UPSC) reject signatures larger than 20KB. This guide shows you how to take a photo of your signature and shrink it from 2MB to 20KB in seconds.
You have filled out the entire application form. You reach the final step: "Upload Signature." You upload the photo you just took with your phone, and... Error: File size exceeds 20KB.
This is the most frustrating part of any online application. Your phone takes high-quality photos (usually 2MB to 5MB), but the government website wants a tiny file (10KB to 20KB). That's a 100x difference!
Why is the Limit So Small?
Government servers handle millions of applications. They don't need a high-definition art piece of your signature; they just need a small, legible black-and-white image to print on your ID card. Keeping the file size small saves them massive storage costs.
The Perfect Signature Dimensions
While every exam is slightly different, the "Golden Standard" that works for 90% of forms (including PAN and SSC) is:
- Width: 140 pixels (approx 3.5 cm)
- Height: 60 pixels (approx 1.5 cm)
- File Size: 10 KB to 20 KB
✅ Step-by-Step Guide: From Paper to Upload
Step 1: Take a Good Photo
Sign on a clean white paper with a thick black pen (gel pen is best).
Do not use a pencil or blue ballpoint if possible. Take the photo in bright daylight to avoid shadows.
Step 2: Upload to EasyImageCR
Open EasyImageCR.in and upload your photo.
Step 3: Crop Tightly
Use the crop tool to cut out only the signature. Remove all the extra white paper,
table, or bedsheet visible in the background.
Step 4: Resize Dimensions
Set the Width to 300px. (Why 300? It's a safe size that is clear but
small enough to compress easily).
Step 5: Compress to 20KB
Select "Target Size (KB)" mode. Enter 20 in the box. This is the magic
step that guarantees your file will be accepted.
Step 6: Download
Click "Resize & Download". Your file is now ready.
Common Mistakes to Avoid
- Shadows: If your hand or phone casts a shadow on the paper, the background will look grey, not white. This increases file size and can cause rejection.
- Too Small: Don't make the signature tiny in the middle of a large page. Fill the frame!
- Wrong Format: Always save as JPG. Most portals do not accept PNG signatures.
About the Author
The EasyImageCR Team is a group of web performance enthusiasts and developers dedicated to making the internet faster and more accessible. We build privacy-focused tools that help students, professionals, and creators optimize their digital assets without technical hurdles.
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