GAT-B Photo & Signature Resizer
Official photo and signature requirements for GAT-B (GAT-B (NTA portal standard)) online applications • NTA portal standard • Verified specifications: 2026-09-16
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GAT-B
Privacy First: Your photos are processed locally in your browser and never uploaded to any server.
Upload & Process
Click or drop photo for GAT-B
JPG, PNG, HEIC, or WEBP up to 15MB
Fast & Secure: Image processing happens instantly on your device. No waiting, no uploads.
Official Specifications for GAT-B
Conducting Authority: NTA portal standard (GAT-B (NTA portal standard))
GAT-B Document Specification Summary
| Parameter | Photograph Requirements | Signature Requirements |
|---|---|---|
| Pixel Dimensions (Width × Height) | 200 × 240 px (Flexible / Recommended) | 140 × 60 px (Flexible / Recommended) |
| Physical Size (cm / mm) | 3.5 cm × 4.5 cm | 3.5 cm × 1.5 cm |
| File Size Limit (KB) | 10 KB to 200 KB | 4 KB to 30 KB |
| Accepted Formats | JPG | JPG |
| Target Resolution (DPI) | 200 DPI | 200 DPI |
| Background / Ink Rules | Recent passport photo with 80% face coverage (without mask). File size 10 KB to 200 KB in JPG format. | Signature in black ink on white paper. File size 4 KB to 30 KB in JPG format. |
Photograph Rules
Official Exam Guidelines• Clear frontal view with both ears visible and eyes open looking straight at the camera.
• The face must cover 70% to 80% of the image frame.
• No dark sunglasses, caps, hats, or face coverings are permitted.
Signature Rules
Official Exam Guidelines• Must be signed with a black or dark blue ink pen within a clean white background.
• Signatures in ALL CAPITAL LETTERS or block initials are strictly rejected.
• File size must strictly be between 4 KB and 30 KB.
Common GAT-B Application Rejection Traps to Avoid
Over 15% of online applications are rejected during initial document verification due to formatting issues.
- Uploading a photo with shadows, patterned background, or non-white backdrop.
- Signing in capital block letters or using a light gel/pencil pen.
- Uploading file sizes smaller than 10KB or larger than 200KB.
- Submitting blurry, distorted, or tilted scans taken from a phone camera without cropping.
GAT-B Photo & Signature Tools
Disclaimer: This is an independent tool to help candidates format their documents. We are not affiliated with NTA portal standard or any government body. Always cross-check with the official notification.
How to resize your GAT-B documents
- Select the specific document type (Photo or Signature) from above.
- Upload your original scanned image or photo.
- Our tool will automatically crop and resize to the required dimensions.
- We'll compress the file to ensure it falls strictly between the required 10–200KB and 4–30KB limits.
- Download the final validated file, ready for upload.
Frequently Asked Questions
Common queries about GAT-B photo and signature requirements
Is my GAT-B photo uploaded to any server?
No, never. All photo and signature resizing, cropping, and compression for GAT-B happen 100% locally inside your web browser. Your sensitive documents never leave your device.
What are the required photo dimensions and file size for GAT-B?
According to the official notification, your photograph for GAT-B must be formatted to recommended resolution of 200 × 240 pixels (3.5 cm × 4.5 cm). The file size must strictly be between 10 KB and 200 KB in JPG format.
What is the required signature size and dimension for GAT-B?
The official signature image requirement for GAT-B is recommended resolution of 140 × 60 pixels (3.5 cm × 1.5 cm), formatted as JPG, with a file size strictly between 4 KB and 30 KB.
What background is acceptable for GAT-B photos?
A plain white or light-colored background is required. The photograph should show a clear frontal view of your face with both ears visible and eyes open looking straight at the camera.
Can I sign in all capital letters for GAT-B?
No. Signature in capital letters or block letters is strictly prohibited by official application portals and will lead to form rejection. Always sign in your natural running handwriting using a black or dark blue ink pen.
Does resizing for GAT-B reduce image quality?
No. Our smart image engine optimizes file size to hit the required 10–200 KB range while preserving full clarity, sharpness, and 300 DPI resolution.