Hello friend, if you just typed SSC signature size into Google you are probably 10 minutes away from submitting your application and your signature file is getting rejected. That or you are trying to prepare everything in advance and want to get this right the first time. Either way, you are in the right place.
Here is the thing about SSC signature requirements that nobody explains clearly. Each SSC exam has slightly different signature dimensions. SSC CGL is not the same as SSC CHSL. SSC GD is different from both. And if you use the wrong dimensions for your exam, the portal rejects your file without telling you exactly why. You just get a generic error.
This article gives you the exact signature size for every major SSC exam in 2026, explains how to actually get your signature file to those specs, and covers the mistakes that get signatures rejected even when the file size looks correct.
SSC Signature Size for All Exams - Quick Reference Table
Here is every number you need in one place. Save this or bookmark this page before you close it.
| Exam | Signature Width | Signature Height | File Size | Format |
|---|---|---|---|---|
| SSC CGL 2026 | 236 px | 79 px | 10 KB to 20 KB | JPG |
| SSC CHSL 2026 | 140 px | 60 px | 10 KB to 20 KB | JPG |
| SSC GD Constable | 240 px | 80 px | 10 KB to 20 KB | JPG |
| SSC MTS 2026 | 140 px | 60 px | 10 KB to 20 KB | JPG |
| SSC CPO 2026 | 140 px | 60 px | 10 KB to 20 KB | JPG |
One thing that is consistent across all SSC exams is the file size range. Every exam wants your signature between 10KB and 20KB. The dimension differences are in the pixel width and height. SSC CGL and GD need a wider signature file compared to CHSL, MTS, and CPO.
Always cross-check these numbers with the official notification PDF for your specific exam cycle before submitting. SSC does update specifications between cycles and we update this article when they do, but the notification is the final word.
SSC CGL Signature Size 2026 - 236x79 Pixels
SSC CGL has the widest signature requirement among all SSC exams. At 236 pixels wide and 79 pixels tall, it is a pretty horizontal image. The aspect ratio works out to roughly 3:1, meaning your signature image is about three times as wide as it is tall.
This matters when you are cropping your signature photo. If you took a photo of your signature on an A4 page and the signature itself is about 8 cm wide and 2.5 cm tall, that is actually close to the right ratio for the 236x79 target. You do not need to stretch or distort anything, just crop to the right area and resize.
File size target is 10KB to 20KB in JPG format. Getting a signature image down to under 20KB while keeping the ink lines sharp is the tricky part, and it is why a lot of people end up with blurry signatures after trying to compress manually in random tools.
Use the SSC CGL signature resizer on sscphotoresizer.in to handle this. Select SSC CGL, select Signature, upload your photo. The tool uses iterative compression, meaning it tries different quality levels and checks the file size until the output lands between 10KB and 20KB without going blurry. Takes about 2 seconds.
SSC CHSL Signature Size 2026 - 140x60 Pixels
SSC CHSL needs a smaller signature file compared to CGL. 140 pixels wide and 60 pixels tall. The aspect ratio is about 7:3, still wider than tall but not as dramatically horizontal as CGL.
The file size requirement is the same, 10KB to 20KB in JPG. Because the pixel dimensions are smaller, you actually have a bit more room to play with quality before the file size hits the ceiling. A 140x60 pixel signature at decent quality will naturally be smaller than a 236x79 version of the same image.
One mistake people make when applying for both CGL and CHSL in the same year is using the same signature file for both. Do not do this. Resize separately for each exam using the correct preset. It takes 30 extra seconds and saves you a rejection.
For CHSL-specific photo and document requirements, read our detailed SSC CHSL photo and signature size guide.
SSC GD Constable Signature Size - 240x80 Pixels
SSC GD is the one that catches people off guard. The signature dimensions are 240x80 pixels, which is actually the largest signature requirement across all SSC exams. It is also the closest to a round number ratio, exactly 3:1.
What makes SSC GD different from all other SSC exams is that it also requires a left thumb impression upload in addition to the photo and signature. The thumb impression has its own separate size requirements. So GD aspirants are dealing with three separate document files instead of two.
For the full breakdown including thumb impression specifications, check the SSC GD photo, signature and thumb impression size guide.
SSC MTS Signature Size 2026 - 140x60 Pixels
SSC MTS uses the same signature dimensions as CHSL. 140x60 pixels, 10KB to 20KB, JPG format. If you have already prepared a signature file for CHSL and the dimensions were correct, you can use the same file for MTS without resizing again.
That said, always verify this against the current MTS notification before assuming the specs match. SSC has changed individual exam specs in the past without changing others.
SSC CPO Signature Size 2026 - 140x60 Pixels
CPO also uses 140x60 pixels. Same as CHSL and MTS. The file size range is 10KB to 20KB in JPG. CPO is a police organization exam so it has additional physical and medical requirements, but the document upload specs for the online form follow the same pattern as other SSC exams at this dimension.
How to Make a Correct SSC Signature
The pixel dimensions are one thing. But even a correctly sized file can get rejected if the signature itself does not meet SSC's visual standards. Here is what matters before you even start resizing.
Use a black ink pen. Not blue, not gel pen that fades, not pencil. Black ink on white paper gives the highest contrast, which is what the portal's document clarity check is looking for. Blue ink is sometimes accepted but black is always safe.
Sign on plain white unruled paper. Do not use ruled notebook paper, graph paper, or any paper with a watermark or texture. The lines or patterns in the background create noise in the image and can cause clarity rejection.
Do not sign in capital letters. SSC explicitly states in their notifications that signatures written in all capital letters will be rejected. Your signature should be in your normal cursive or natural signing style. If you normally sign your name in a stylized way, use that. If you print your name in capitals on forms, you need to develop a proper signature before applying.
Size matters at the physical level too. Your actual handwritten signature should be about 7 to 10 cm wide on the paper. Too small and the ink details are lost when you photograph it. Too large and you waste resolution on white space.
Photograph it right. Hold your phone directly above the paper, not at an angle. In good lighting, ideally natural light from a window. No flash, because flash creates glare on the paper. Tap on the signature area on your screen before clicking so the camera focuses on the ink.
For more detailed tips on getting a clean signature scan, read our SSC signature preparation tips guide.
Why Your Signature Keeps Getting Rejected
You followed the size instructions, the file looks fine, and the portal still rejects it. This happens more than you think. Here are the real reasons.
Blurry ink lines. This is the most common one after wrong dimensions. When a signature image gets heavily compressed to hit the KB limit, the thin ink strokes become soft and blurry. The portal's document check detects this. The fix is to use a tool that compresses intelligently, stopping when the target KB is reached rather than compressing as hard as possible.
Grey or off-white background. If you photographed your signature in low light or the paper has a slight yellow tint, the background is not clean white. The portal expects high contrast between dark ink and a light background. Retake the photo in better lighting.
Signature too small in the frame. If your original photo shows the signature as a tiny part of a large page, the cropped and resized output will be low resolution. Fill more of the frame with the signature when you photograph it.
Shadow across the signature. Your hand or the phone case cast a shadow on the paper while you were photographing it. Take the photo from directly above with nothing casting a shadow.
PNG or WEBP format instead of JPG. Some phones save edited images as PNG by default. The SSC portal only accepts JPG for signatures. The resizer at sscphotoresizer.in always outputs JPG regardless of what format you upload, so this is handled automatically.
How to Resize Your SSC Signature in 3 Steps
Once you have a clean photo of your signature, the resize process is straightforward.
Go to sscphotoresizer.in on any browser, phone or laptop. Select your exam from the dropdown menu. Select Signature as the document type. The tool loads the correct dimensions and KB range for that exam automatically.
Upload your signature photo. The processing happens entirely in your browser, so the file never leaves your device. Press process and wait 2 to 3 seconds.
The result screen shows you the output file size and dimensions. If it says something like 15.4KB and 236x79px for CGL, download it. That file is ready to upload to the SSC portal.
No account, no payment, no data stored anywhere. The tool is free and works on all devices.
Common Confusion - Signature vs Photo Requirements
A lot of aspirants mix up signature and photo requirements because both are uploaded to the same form. Just to be clear one more time:
Your photo for SSC CGL 2026 is 275x354 pixels and 20KB to 50KB. This is now handled by live webcam capture on the portal in 2026, not a file upload.
Your signature for SSC CGL 2026 is 236x79 pixels and 10KB to 20KB. This is still a manual file upload that you prepare beforehand.
They are two completely separate files with completely separate requirements. Preparing one does not prepare the other. If you want the full photo size breakdown for CGL alongside the signature, read the SSC CGL photo size 2026 guide.
Final Check Before You Upload
Before you upload your signature file to the SSC portal, go through this list:
- File format is JPG, not PNG or WEBP
- Pixel dimensions match your specific exam from the table above
- File size is between 10KB and 20KB
- Signature is in cursive or your natural style, not capital letters
- Ink is clearly visible against a white background
- No shadows or lines across the signature
If all of those are checked, your signature upload should go through without issues. The whole preparation process from photographing your signature to having a portal-ready file takes about 5 minutes once you know what you are doing.
Good luck with your application. Get this document stuff out of the way early so you can focus on what actually matters, which is the exam preparation itself.