CAT (IIM): Photo & Signature Resizer
As last checked on 26 September 2026, CAT asks for: Photo 450×600 px, up to 80 KB, JPEG; Signature 472×207 px, up to 80 KB, JPEG. The free tool below sets these numbers for you and runs entirely in your browser.
CAT's registration form asks for a passport photo within 1200 x 1200 px and a signature of 80 mm x 35 mm, each under 80 KB. Get your CAT photo & signature to the exact required size in seconds — free, private, and entirely in your browser. Nothing is uploaded.
| Document | Dimensions | File size | Format | Background |
|---|---|---|---|---|
| Photo | 450 × 600 px · tool default | up to 80 KB | JPEG | White |
| Signature | 472 × 207 px (80 × 35 mm at 150 DPI) | up to 80 KB | JPEG | White paper |
Photo
- Dimensions
- 450 × 600 px
- File size
- up to 80 KB
- Format
- JPEG
- Background
- White
Signature
- Dimensions
- 472 × 207 px (80 × 35 mm at 150 DPI)
- File size
- up to 80 KB
- Format
- JPEG
- Background
- White paper
Source: CAT 2025 Registration Guide · Last checked 26 September 2026.
⚠️ Specs change between notifications — always verify with the latest official notification before you upload.
✉️ Report a wrong size Opens your email app with the exam and page filled in. Paste the link to the notice that shows the correct size.
- Photo: Within 1200x1200 px, min 150 px/inch, not older than 6 months. (Guide only gives a 1200x1200 maximum; 450x600 default.)
- Signature: 80 mm x 35 mm at minimum 150 px/inch.
What else does CAT require?
- Photo: JPG/JPEG, within 1200 x 1200 px, max 80 KB, minimum 150 px/inch, white background, not older than 6 months.
- Signature: JPG/JPEG, 80 mm x 35 mm, max 80 KB, minimum 150 px/inch.
- Keep extra copies - the same photo is pasted on the admit card.
How do I resize my CAT files?
- Open the tool above and upload your file (JPG, PNG, WEBP or iPhone HEIC).
- The CAT preset sets Photo 450×600 px, up to 80 KB automatically.
- Crop to frame your face (or your signature), optionally fix the background, then Download when the badge is green.
- Switch the document type at the top of the tool for Signature.
CAT uploads: frequently asked questions
What is the CAT Photo size?
450 × 600 pixels, up to 80 KB, JPEG, background: White. Pixels: Guide only gives a 1200x1200 maximum; 450x600 default. Last checked 26 September 2026 — confirm with the latest notification.
What is the CAT Signature size?
472 × 207 pixels, up to 80 KB, JPEG, background: White paper. Last checked 26 September 2026 — confirm with the latest notification.
Are my CAT photo and signature uploaded to your server?
No. Cropping, resizing and compression happen in your browser. No file is uploaded or stored.
What if the CAT notification changes the size?
Specs can change every cycle. Check the new CAT notification; if the numbers differ, paste the new requirement into the tool's “Not listed?” box or type the pixels and KB — and tell us so we can update the preset.
Related tools
Combine scans into one PDFConvert format or change DPIEvery exam photo size in one table
📋 Upload still failing? Work through the cause-by-cause checklist →
📘 Read the full guide: resizing photos and signatures in KB, pixels and DPI →