CBSE's CTET application form is strict about photo and signature specifications, and an incorrectly sized upload is one of the most common reasons candidates get stuck at the registration stage or run into trouble during document verification. With CTET held twice a year and lakhs of teaching aspirants competing for the same certificate, there is no reason to waste a valid attempt over a wrongly sized JPEG.
Here are the exact numbers straight from the official CTET information bulletin, so you do not have to guess or rely on an outdated blog post. Since CTET qualifies you for teaching posts across CBSE, KVS, NVS, and several state boards, it is worth getting this small technical detail right rather than risk a rejected or incomplete application form.
Photo Size Requirements
Your photograph must measure 3.5cm (width) x 4.5cm (height), and the file size must fall between 10KB and 100KB. It must be uploaded in JPG or JPEG format only. CBSE specifically asks for a latest photograph, since this image will be matched with you in person at the exam center, so avoid using an old passport photo. There is no strict background color rule stated in the official bulletin, but a plain light background is always the safer choice, and you should avoid caps, sunglasses, or anything covering your face. Since the acceptable range runs all the way from 10KB to 100KB, most candidates have room to spare, and the more common problem is a file that is too small and pixelated rather than too large.
Signature Size Requirements
Your signature must be sized 3.5cm (length) x 1.5cm (height), with a file size between 3KB and 30KB, uploaded in JPG or JPEG format. Sign on plain white paper, scan it clearly, and crop it to the correct dimensions before uploading. Keep the signature consistent with what you will use on your admit card and answer sheet, because CTET invigilators check it again at the exam hall against your OMR sheet.
Common Mistakes That Get Applications Rejected
CTET applications commonly get flagged for uploading photo or signature files that exceed the 100KB or 30KB caps, since candidates often forget to compress a modern smartphone photo before uploading. Another frequent issue is using an old photograph that no longer matches the candidate's current appearance, which causes problems at the exam center rather than at the form stage. Uploading the wrong file into the wrong upload box, such as swapping the photo and signature fields, is a surprisingly common and easily avoidable mistake. Low-resolution or blurry scans that make the signature illegible are also often rejected during verification, and a few candidates lose time uploading a photo saved as .jpeg with the wrong file extension recognition on older browsers.
How to Resize Your Photo and Signature in 30 Seconds
SignResizer is a free tool that instantly resizes your photo and signature to CTET's exact 3.5x4.5cm, 10KB-100KB photo and 3.5x1.5cm, 3KB-30KB signature requirements, with no signup needed.