CAT Photo & Signature Resizer

CATPhoto & Signature Upload Requirements

Data table for accessibility
Requirement	Photograph	Signature
Pixel Dimensions	1200 × 1200 px	800 × 300 px
File Size (KB)	30 – 80 KB	30 – 80 KB
File Format	JPEG / JPG only	JPEG / JPG only
Background	Plain white background	N/A
Special Rule	Plain white background, no overlay text required	Do not sign in capital letters
Ink Color	N/A	Black or blue ink pen (on white paper)
Source Year	2026 Notification

CATPhoto & Signature Upload Requirements Guide

The Common Admission Test (CAT) mandates that every candidate upload a strictly compliant passport-style photograph and a handwritten signature during online registration. Non-compliant files are among the most common reasons for form rejection before the application is even reviewed. For the CAT photo size, the required pixel dimensions are 1200 x 1200 pixels, with a file size between 30 KB and 80 KB in JPEG format. The background must be plain white. The CAT portal does not require any printed text overlay on the photograph. For the CAT signature size, your handwritten signature on white paper must be scanned or photographed to produce an image of 800 x 300 pixels, compressed to 30–80 KB. Signatures must be written using black or blue ink and must not be in capital letters. Our free online CAT photo resize tool compresses and crops both files locally inside your browser — your images are never uploaded to any server. Specifications are sourced directly from the 2026 Notification and last verified on 2026-05-22.

How to Resize CATPhoto & Signature Online

1
Select the asset type
Click the 'Photo' tab to resize your photograph, or the 'Signature' tab to process your signature scan. Both use separate CAT-specific dimension presets.
2
Upload your image file
Click the upload area or drag-and-drop a JPEG, PNG, or WEBP file (maximum 10 MB). The tool will load a live preview of your image immediately.
3
Crop to the correct frame
Drag the crop handles to frame your face or signature correctly. The tool enforces the exact 1200:1200 pixel ratio for photos.
4
Set the file size target (30–80 KB for photo)
Move the quality slider to hit your target file weight. The tool's binary-search quality loop will automatically adjust JPEG compression to produce a file within the 30–80 KB range required by CAT.
5
Download the compliant JPEG
Click 'Download Resized JPG' to save the output file. The downloaded file meets the exact CAT photo size and signature size requirements as per the 2026 Notification.

Official Source Verification

These specifications are sourced from the 2026 Notification and were last verified on 2026-05-22. Requirements can occasionally be updated mid-cycle by the examination authority.

Always confirm with the latest notification at https://iimcat.ac.in before final submission.

CAT FAQs

Frequently asked questions for Common Admission Test upload rules.

What is the photo background requirement for CAT?

As a free online tool, yes. The background of the photo must be white or light-colored.

What is the size limit of files in CAT portal?

Both photo and signature must be in JPEG or JPG format, with sizes between 30 KB and 80 KB.

What is the CAT photo size in pixels?

The required CAT photo size is 1200 x 1200 pixels in JPEG/JPG format. The file must be between 30 KB and 80 KB.

What is the CAT signature size in pixels?

The CAT signature dimensions are 800 x 300 pixels in JPEG format. File size must be between 30 KB and 80 KB.

What background is required for the CAT photo?

The CAT photograph requires a plain white background. Avoid colored, patterned, or cluttered backgrounds. Photos taken against walls or with shadows will be rejected.

What ink color is required for the CAT signature?

Black or blue ink pen is required for the CAT signature. The signature must be done on plain white paper and the scan must be clear with no shadows or smudges.

Can I use a phone camera to take my CAT photograph?

Yes, you may use a phone camera, provided the image is well-lit, taken against a plain white background, and the face occupies at least 80% of the frame. Use our tool to crop and compress it to the required 1200x1200px dimensions.

How do I compress my photo to 80 KB for CAT?

Use this free CAT photo resize online tool. Upload your photo, crop it, then set the quality slider target to under 80 KB. The tool's binary-search compression loop will automatically reduce the file size without visible quality loss.

Is a selfie photo acceptable for CAT?

No. Selfie-style photos are generally not acceptable for CAT. The photograph must be professionally taken with a plain white background, proper lighting, and your face should be clearly visible without sunglasses or head covering.

What file format is accepted by the CAT portal?

Only JPEG or JPG format is accepted for both the photograph and signature for CAT. PNG, WEBP, BMP, TIFF, and other formats will not be accepted during form submission.

When were the CAT photo and signature requirements last verified?

The specifications displayed here were verified against the 2026 Notification. Last verification date: 2026-05-22. Always cross-check with the latest official notification at https://iimcat.ac.in before submitting your application.

Is this CAT photo resize tool free to use?

Yes, this tool is completely free. It runs 100% inside your browser using the HTML5 Canvas API. No registration, no server upload, and no watermarking. Your photos and signatures stay private on your device.