Step-by-Step Guide
Choose Your Portal
Click the NSDL / Protean or UTI Infrastructure toggle at the top of the tool. This sets the correct pixel dimensions, DPI, and file-size limits for every image you process.
Select a Tool
Choose Resize Photo for your passport-size photo, Resize Signature for your signature, or Merge Aadhaar Card to create a combined PDF.
Upload Your Image
Click Upload & Crop (or drag & drop). A cropper opens in a modal overlay — the aspect ratio is automatically locked to the required dimensions.
Crop & Save
Drag the crop box to frame your face (or signature), then click ✔ Crop & Save. The image is instantly resized to the exact pixel dimensions.
Download
Click the green Download button. The tool checks the file size and compresses automatically if it exceeds the portal limit (30 KB / 50 KB / 60 KB depending on type & portal).
Upload to Portal
Log in to the NSDL or UTI portal and upload the downloaded file. The image will meet all size, format, and dimension requirements.
💡 Pro Tips
- → Use a photo taken in natural daylight against a plain white wall for best results.
- → Sign on plain white paper with a black or blue pen, then scan or photograph it flat.
- → If your photo is already cropped, use the Reset button to upload a fresh one.
- → Chrome and Edge browsers work best for file downloads on mobile.
Quick Reference: Size Requirements
| Type | NSDL / Protean | UTI Infrastructure |
|---|---|---|
| Photo | 197×276 px · 200 DPI · Colour JPEG · <50 KB | 213×213 px · 300 DPI · Colour JPEG · <30 KB |
| Signature | 354×157 px · 200 DPI · Colour JPEG · <50 KB | 354×157 px · 600 DPI · B&W JPEG · <60 KB |
| Aadhaar PDF | <300 KB | <300 KB |