KPSC wants your signature between 50 KB and 70 KB. A signature naturally compresses to under 10 KB, so this is the rare case where the job is making the file bigger — honestly.
or browse your files
| File size | 50 KB to 70 KB — a 20 KB window |
|---|---|
| Format | JPEG |
| Dimensions | Not stated |
| Ink colour | Not stated |
| Uploaded | Separately from the photograph |
| Scribe's signature | Maximum 70 KB (different rule — see below) |
KPSC's wording: “Signature in JPEG format, with a file size between 50KB to 70KB”, repeated on the upload field as “Signature Size Minimum 50KB to Maximum 70KB”.
Set it against the others. TGPSC allows a signature of 1 KB to 30 KB. APPSC allows up to 30 KB with no floor. MPSC allows 50 KB with no floor. KPSC demands a signature at least 50 KB — a floor higher than most commissions' ceilings — and gives you only 20 KB of room above it.
The difficulty is not arbitrary strictness, it is the subject matter. A signature is a handful of dark strokes on white paper: enormous flat regions, hard edges, no gradients. JPEG compresses that better than almost anything, and a clean trimmed signature will sit at 5–15 KB looking perfectly sharp. Every general-purpose “signature resizer” on the web is built to push files down toward a ceiling. Point one at KPSC and it will hand you a beautiful 9 KB file that the portal rejects.
Resolution. KPSC states no dimensions for the signature, so a larger image is entirely compliant, and every extra pixel is real data. This is the main lever and it is the one this tool pulls first.
Quality. Encoding at a high JPEG quality keeps the fine texture of the paper and the edges of the ink instead of throwing it away. Also real.
Padding. Writing junk bytes into a comment field to hit the number. This produces a larger file that is not one pixel more readable, and it is what several “increase image size to KB” tools actually do. We do not.
On our other signature pages, cleaning the paper to white is on by default — it makes a grey scan look crisp and it helps a file squeeze under a tight ceiling. On this page it is off, because it does the opposite of what you need. Flattening the paper to a uniform white removes exactly the texture that a JPEG spends bytes on. Cleaning a scan can halve the file, and halving a file when the floor is 50 KB is how you fail the upload.
Turn it on only if the paper is discoloured enough to actually hurt legibility. The tool tells you what it measured either way.
Physically challenged candidates may bring their own scribe, and the scribe's own photograph and signature must be uploaded with their details. That upload follows a separate specification: JPEG or JPG, minimum 20 KB and maximum 100 KB for the scribe's photograph, maximum 70 KB for the scribe's signature. The scribe's photo floor is 20 KB, not the 50 KB that applies to yours.
kpsc.kar.nic.in is the commission's main website. kpsconline.karnataka.gov.in is the application portal, and it is the one these figures come from. KPSC's own homepage carries the notice that it has started a new web application for all new notifications, that candidates should register at kpsconline.karnataka.gov.in, and that anyone registered on the previous websites needs to re-register on the new one.
This matters for what you will read elsewhere. Figures of 20–50 KB for the photograph and 10–20 KB for the signature are still widely republished for KPSC. They belong to the older flow. The portal documented in the current manual asks for 50–200 KB and 50–70 KB, which are not merely different numbers but different in kind — a file built to the old figures is guaranteed to fail the new floor.
Two commissions answer to KPSC. This page is Karnataka Public Service Commission, whose main site is kpsc.kar.nic.in and whose application portal is kpsconline.karnataka.gov.in. The Kerala Public Service Commission is at keralapsc.gov.in and publishes its own contact address as kpsc.psc@kerala.gov.in, so the abbreviation is genuinely shared rather than a mix-up by outsiders. Kerala runs an entirely separate one-time-registration profile with its own upload rules. Nothing on this page applies there.
Same application, different file. Each has its own limits — they are not interchangeable.
Between 50 KB and 70 KB, in JPEG format. That is a 20 KB window with a floor of 50 KB, and it is the tightest requirement of any state commission we have built for. The manual states it twice: in the Step 1 text and on the upload field, which reads that the signature size is minimum 50KB to maximum 70KB.
It probably is fine. A signature is a few dark strokes on white paper, and that is the most compressible image there is - JPEG will take a clean trimmed signature down to under 10 KB without visible loss. The file being small is not a defect in your scan, it is a property of the subject. KPSC just happens to demand a file five times larger than the image naturally wants to be.
Resolution. KPSC publishes no dimensions for the signature at all, so a larger image is fully compliant, and more pixels means more real data rather than padding. This tool keeps your scan large and encodes at high quality to reach the band. What it will not do is stuff junk bytes into the file to hit the number - that produces a bigger file that is no more readable.
On this page, usually not - and that is the opposite of our advice for every other commission. Lifting grey paper to pure white removes texture, and texture is what carries file size in a JPEG. Cleaning a scan can easily halve the file, which pushes you under the 50 KB floor. The clean-up option here is off by default for that reason. Turn it on only if the paper is genuinely discoloured enough to hurt legibility.
KPSC does not state one, nor a DPI, nor an aspect ratio. The manual gives JPEG and 50-70 KB and nothing else. Since a larger image is what gets you into the band, this tool works upward from your scan's own resolution rather than shrinking to some invented target.
KPSC does not say. There is no ink colour anywhere in the applicant manual. MPSC requires black, GATE permits black or dark blue, TGPSC and APPSC state nothing. We do not import another commission's rule - the tool checks that your strokes are legible rather than policing their colour.
Yes, and it is easy to miss. For physically challenged candidates bringing their own scribe, the manual sets a separate rule: the scribe's photograph and signature go up in JPEG or JPG at a minimum of 20 KB and a maximum of 100 KB for the photograph, and a maximum of 70 KB for the signature. Note the scribe's photo floor is 20 KB, not 50.
No. The trim, the legibility measurement and the compression all run in your browser on your own device. Your signature image is never transmitted.
Requirements on this page are quoted from the “KPSC UDYOGA” Applicant User manual, version 1.4, updated 18 June 2026, published by the Karnataka Public Service Commission and available from the USER MANUAL tab on its application portal at kpsconline.karnataka.gov.in (file name User_Manual_For_Applicant.pdf). KPSC states a file format and a size band with both a minimum and a maximum; it states no pixel size, no DPI, no aspect ratio and no ink colour.
The manual governs the applicant profile across notifications, but an individual recruitment notification may restate these figures, so check the one you are applying under. KPSC’s main website is kpsc.kar.nic.in; applications are made on the portal above, and figures of 20–50 KB circulating for KPSC belong to the older flow. This is Karnataka PSC, not Kerala PSC (keralapsc.gov.in), which shares the abbreviation and has a different specification. We are not affiliated with either.