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Make your file fit what the form is asking for
Exact pixel size, an exact KB range — including the minimum, which is what actually gets uploads rejected and which almost every other tool ignores. Plus 115 free tools to merge, compress, and convert PDFs, photos, and documents. All in your browser; nothing is ever uploaded.
Fix a photo for an upload form →CTET photo and signature size
The photo and signature rules for the Central Teacher Eligibility Test (CTET), taken from the official notification — and a tool that hits them exactly, in your browser, without uploading your documents anywhere.
| Image | File size | Dimensions | Format |
|---|---|---|---|
| Photograph | 10–100 KB | 3.5 cm (width) x 4.5 cm (height) | JPG/JPEG |
| Signature | 3–30 KB | 3.5 cm (length) x 1.5 cm (height) | JPG/JPEG |
Source: CTET–February 2026 Information Bulletin (ctet.nic.in). Checked on 2026-07-14. Specs change between exam cycles — confirm against the notification for your own session before you upload.
Docexp is an independent website and is not affiliated with, endorsed by, or connected to the Central Board of Secondary Education (CBSE) or any other government body. The exam name is used only to identify which exam these rules belong to. This page is a reference to the official notification linked above — if this page and the notification ever disagree, the notification is right.
The part that actually gets people rejected
Both CTET limits are ranges with a floor, not just a ceiling. The signature has to be at least 3 KB — and a signature is the one image that lands under a floor by accident, because it is mostly white space and compresses to almost nothing. Squeeze a scanned signature 'as small as possible' and you can easily hand CTET a 1 KB file it will refuse. The fix is not more compression; it is less.
Our advice (not part of the official spec)
The bulletin gives centimetres, not pixels, and does not name a DPI — so anyone quoting you an exact pixel count for CTET is guessing. In practice the portal enforces the KB range, which is what you can actually control. Aim for the middle of each range rather than the edge: around 50 KB for the photo and around 15 KB for the signature leaves room for the portal's own re-encoding.
What the notification actually says
“Size of scanned photograph should be between 10 to 100 KB”
“Image Dimension of photograph should be 3.5 cm (width) x 4.5 cm (height).”
“Size of scanned signature should be between 3 KB to 30 KB.”
“Image Dimension of signature should be 3.5 cm (length) x 1.5 cm (height).”
“The candidates are advised to keep the scanned images of latest photograph and signature of the candidates ready in JPEG/JPG format and as per the size and dimension specified, before applying online.”