CAT 2026 Signature Correction Guide: Size, Format, Dimensions and How to Re-Upload

CAT 2026 Signature Correction

Your signature is part of your CAT 2026 application and appears on your admit card, and you may be asked to sign at the test centre. If the signature you uploaded was cropped, faint, too large or in the wrong format, you can replace it during the CAT 2026 correction window. The signature is one of only three fields expected to be editable, along with the photograph and test city preferences.

IMPORTANT: IIM Indore has not yet confirmed the CAT 2026 correction window on iimcat.ac.in. Current reports point to an opening around October 5, 2026, with a very short window (possibly closing around October 6). Treat all correction window dates as tentative and reconfirm them on iimcat.ac.in. File specifications below are based on the CAT guidelines as widely reported; some sources quote slightly different dimensions or minimum sizes, so always check iimcat.ac.in.

Key Takeaways

The signature is expected to be editable during the CAT 2026 correction window.
Upload a JPG or JPEG file only, with a maximum size of 80 KB.
Commonly reported dimensions are 80 mm x 35 mm at a minimum of 150 pixels per inch.
Sign in black or blue ink on plain white paper, in your own handwriting.
Keep the file between 20 KB and 80 KB to be safe, as some sources quote a minimum size.
There is expected to be no fee for the correction.

CAT 2026 Signature Specifications

Requirement	Details
File Format	JPG / JPEG only
Maximum File Size	80 KB (safe range: 20 KB to 80 KB)
Dimensions	80 mm (width) x 35 mm (height)
Resolution	Minimum 150 pixels per inch
Ink Colour	Black or blue
Paper	Plain white, with no lines or borders
Signature Style	Your own handwritten signature, not typed

Specifications are based on widely reported CAT guidelines. IIM Indore's official instructions on iimcat.ac.in are final.

Signature Do's and Don'ts

Do	Don't
Sign in your regular, consistent style	Type your name or use a font-based signature
Use a black or blue pen with dark, clear strokes	Use a pencil, light ink or a gel pen that fades
Use plain white paper with no lines	Sign on ruled, coloured or creased paper
Capture the full signature with a small margin	Crop out any part of the signature
Scan in even light or use a flatbed scanner	Upload a photo with shadows or glare

How to Prepare Your CAT 2026 Signature

Take a clean sheet of plain white paper and a black or blue pen.
Sign inside a box of roughly 80 mm x 35 mm so it fits the required proportion.
Scan the paper or take a bright, straight-on photograph.
Crop closely around the signature to the 80 mm x 35 mm landscape ratio.
Save it as JPG or JPEG at a minimum of 150 pixels per inch.
Compress the file to under 80 KB and check that the strokes remain sharp.

How to Re-Upload Your Signature in the Correction Window

Visit the official CAT website, iimcat.ac.in, once the correction window opens.
Log in with your CAT 2026 registration ID and password.
Open your application form and go to the signature section.
Upload the corrected JPG or JPEG file.
Review the preview to confirm that the full signature is visible and clear.
Submit the form and save the confirmation for your records.

Common Signature Upload Problems and Fixes

Problem	Likely Cause	Fix
Upload rejected	File above 80 KB	Compress the image to between 20 KB and 80 KB
Format error	PNG, PDF or other format	Convert it to JPG or JPEG
Signature looks cut off	Over-cropping	Re-scan and leave a small margin on all sides
Signature looks faint	Light pen or poor scan	Use a dark black or blue pen and re-scan
Signature appears tiny	Too much white space	Crop closer to the signature, keeping the 80 mm x 35 mm ratio

Signature Tips for Test Day

Use the same signature style you uploaded when signing at the test centre.
Carry a printout of your admit card and a valid photo ID.
Practise signing consistently so that your signature looks the same across documents.

CAT 2026 Signature Correction FAQs

What is the signature size for CAT 2026?

The CAT 2026 signature must be a JPG or JPEG file of up to 80 KB. The commonly reported dimensions are 80 mm (width) x 35 mm (height) at a minimum of 150 pixels per inch. Confirm the exact figures on iimcat.ac.in before uploading.

Can I change my signature in the CAT 2026 correction window?

Yes. The signature is one of the fields expected to be editable during the CAT 2026 correction window, along with the photograph and test city preferences.

Which pen should I use for my CAT 2026 signature?

Sign with a black or blue pen on plain white paper, with clear, dark strokes and no lines, borders or other writing around it.

Can I type my signature or use capital letters in CAT 2026?

No. Upload a scan or photo of your own handwritten signature. Typed names and digitally generated signatures should be avoided.

What format is accepted for the CAT 2026 signature?

Only JPG or JPEG files are accepted. Convert PNG, PDF or other formats before uploading.

What if my signature changes after the CAT 2026 correction window?

Use the same signature you would normally sign with, because you may need to sign at the test centre. Replace the uploaded signature during the correction window if it does not match, since the facility is one-time.

Prepare for CAT 2026 with CATKing

Fixing your application form is only the first step of your CAT 2026 journey. CATKing helps aspirants with mentor-led coaching, "Real CAT" mock tests, personalized study plans and dedicated GD-PI preparation, from CAT in November through the rest of the MBA entrance season.

This article is published by CATKing for informational purposes. Official dates, specifications and rules are decided by IIM Indore; always verify them on iimcat.ac.in before acting.

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