Entrance Exams
CAT
CAT
photo & signature resizer
Set to the sizes IIMs asks for — exact pixels, the right KB band and 200 DPI. Everything happens on your device.
Photograph: 276×354 px · up to 80 KBSignature: 630×276 px · up to 80 KB
✓Checked against the official notification, page 10Details ↓
Already have a rejected file? Check the original file for CAT.
Published sizes disagreed. We checked the notification.Resolved against the CAT 2026 registration guide (page 10). The passport photograph must fit inside 1200 × 1200 px, at least 150 px per inch, on a white background, not more than six months old, and not more than 80 KB. There is no exact pixel size and no minimum KB. 276 × 354 is 35 × 45 mm at 200 DPI, inside that box. The signature is 80 mm × 35 mm — not 80 × 35 px — with the same 150 px/inch minimum and the same 80 KB ceiling. 630 × 276 is that box at 200 DPI. The old 200 × 230 px photograph was a banking size, not CAT’s.
✓
Checked against the official notification on 2026-10-01, page 10.
Open the notification →
- Photograph Must fit inside 1200×1200 px, at least 150 px/inch, and not more than 80 KB. No exact pixel size and no minimum KB are stated. 276×354 is 35×45 mm at 200 DPI, inside that box.
- Signature 80 mm × 35 mm, not 80×35 px, at least 150 px/inch, and not more than 80 KB. 630×276 is that box at 200 DPI. No minimum KB is stated.
Sizes for CAT
| Upload | Dimensions | File size | Format |
|---|---|---|---|
| Photograph | 276 × 354 px | up to 80 KB | JPEG |
| Signature | 630 × 276 px | up to 80 KB | JPEG |
Set by IIMs. Open the official site →
How it works
Exam-ready photo and signature in three steps. No editing skills, no software, no upload.
1
Pick your exam
Choose from 129 presets. 35 have been checked against the official notification; every other page says it has not. Pixels, KB band and DPI load with the preset. Not listed? Type your own numbers.
2
Upload and adjust
Drag to position your face, pinch or scroll to zoom. Signatures get one-slider background clean-up. Add your name and the date if the board wants them printed on the photo.
3
Check and download
You get exact dimensions, a file inside the KB band, correct DPI — and a pre-flight report on blur, background and face position before you upload anything.
Guides
How to find the photo specification in a notification PDF
Every size chart online contradicts every other one. The authority is the notification. Here is how to find the upload rules inside it.
3 min read
How to resize an image to an exact KB size
The method portals require — hitting a file-size band exactly, at fixed pixel dimensions, without wrecking the picture.
3 min read
How to scan a signature with a phone camera
No scanner needed. How to photograph a signature so the paper comes out white, the ink stays sharp, and the file passes.
3 min read
Questions
What photo size is required for CAT?
276 × 354 pixels as a JPEG up to 80 KB, with a signature of 630 × 276 pixels up to 80 KB. These are the sizes we currently list; confirm them in the notification published by IIMs.
Is there a minimum file size for CAT?
No. IIMs states a ceiling of 80 KB and no minimum. A smaller file is not rejected for being small, and this tool does not pad one up to a floor the notice does not set.
Are my photos uploaded anywhere?
No. The resizing runs inside your browser using the standard canvas API. Nothing is sent to a server, there is no account, and the page keeps working offline once loaded.
Can I set the DPI?
Yes, and it defaults to 200 DPI here. Browsers write 96 DPI into canvas JPEGs, and some portals read that field and reject the file even when the pixel dimensions are correct. The value is written into the JFIF header of the file you download.
Why do other sites list a different size for CAT?
Resolved against the CAT 2026 registration guide (page 10). The passport photograph must fit inside 1200 × 1200 px, at least 150 px per inch, on a white background, not more than six months old, and not more than 80 KB. There is no exact pixel size and no minimum KB. 276 × 354 is 35 × 45 mm at 200 DPI, inside that box. The signature is 80 mm × 35 mm — not 80 × 35 px — with the same 150 px/inch minimum and the same 80 KB ceiling. 630 × 276 is that box at 200 DPI. The old 200 × 230 px photograph was a banking size, not CAT’s. We would rather show you the disagreement than pick one and sound certain.
Other Entrance Exams exams
NEET UG275×354 · 10–200 KBJEE Main275×354 · 10–200 KBCUET UG275×354 · 10–200 KBNEET PG350×450 · up to 79 KBGATE200×260 · 5–600 KBITI Admission350×450 · 10–50 KBPolytechnic Admission350×450 · 10–50 KBUP B.Ed JEE350×450 · 20–50 KBIOCL Apprentice & Officers200×230 · 20–50 KBNPTEL / SWAYAM350×450 · 10–200 KB