Rajasthan's KYC step wants a left thumb impression in JPEG, between 20 KB and 50 KB. This hits the band at both ends and checks the print is readable.
or browse your files
| Which digit | Left thumb |
|---|---|
| File size | 20 KB to 50 KB — a band with both ends |
| Format | JPEG only |
| Dimensions | Not stated |
| Ink | Not specified by RPSC |
| Where | On the KYC step of your One Time Registration |
RPSC's KYC panel labels it “Left Thumb Impression (Only JPEG allowed. [20KB to 50KB])”, and section 2.4 of the manual asks for “lastly left-hand thumb impression”.
Rajasthan names the digit. That is worth noticing because the equivalent field in Odisha reads “Left Thumb / Right Thumb / Any finger Impression”, which is far more permissive. RPSC's manual and its upload label both say left.
The impression itself matters more than the scanning. Press once and firmly onto plain paper without rolling or sliding — a smeared print is the common failure and no amount of processing recovers it. Let the ink dry before photographing. Shoot straight down in even light so no shadow falls across the paper, and fill the frame with the impression rather than the whole sheet.
This tool measures two things: the contrast between the ink and the paper, and how much of the impression's own area is inked. A print that is too light reads low on the first; one that is blotted reads high on the second. Both are visible before you download.
RPSC names no ink colour and no pad type, so nothing here checks or changes them.
This surprises people, so it is worth being blunt about. On the KYC step, RPSC's photo control is a Take Photo button with a five-second timer. It is a live capture in the portal. There is no file input for it, which means no photograph you prepare in advance can be used, and any tool offering to resize your RPSC photo is offering something the form will not accept.
What actually helps is getting the capture right, because RPSC is unusually specific about it. In the Commission's own words: sit still and look straight into the camera after the five-second timer; if the photo is captured with closed eyes, re-capture it; spectacles may be kept on, but glare must not make the image unclear or overexposed; the photo must be taken against a well-lit, plain background, and blurred or dark photos will not be accepted. The camera keeps prompting until the photo is clear.
And the declaration you tick is unusually pointed: the same photo is used on the application form and the admit card, and if identity cannot be verified because it is unclear, you may be disqualified from the exam — with the application liable to rejection if the photo is taken in insufficient light, is blurry, hazy, has closed eyes, or is tilted. Sit somewhere bright, face a plain wall, and take the extra minute.
The fourth thing RPSC wants at KYC is a handwritten specimen, and its upload accepts PDF only, between 100 KB and 200 KB. That is a different job from the images on this page — the portal links a “Sample Handwritten Specimen” showing what to write.
If you have photographed or scanned your specimen as an image, convert it with JPG to PDF, then check the result against the band: if it lands over 200 KB use Compress PDF. Note that band has a floor as well as a ceiling — a very clean scan can come out under 100 KB, in which case scan again at a higher resolution rather than trying to inflate the file.
RPSC's manual is explicit that the application form reuses what is in your One Time Registration: on the Identification & Enclosures page, the live photo, signature and left-hand thumb impression are taken from the OTR, and if you want to change any of them you have to change them in the OTR profile first.
So a bad signature is not something you correct while applying — you correct it upstream, and every application afterwards picks up the new one. Worth knowing before a deadline. Note also that the fields carried in from Aadhaar or Jan Aadhaar — name, father's name, birthdate and gender — can be updated only once without a fee, through the One Time Edit button after Aadhaar-based OTP.
RPSC is reached through SSO Rajasthan, the state single sign-on, and so is RSSB (the Rajasthan Staff Selection Board, formerly RSMSSB). Same login, different recruiter, different notifications — do not assume a rule from one applies to the other.
Same application, different file. Each has its own limits — they are not interchangeable.
Between 20 KB and 50 KB, in JPEG. RPSC's KYC panel labels it 'Left Thumb Impression (Only JPEG allowed. [20KB to 50KB])' - the same band as each of the two signatures.
The left. RPSC's wording is specific: the KYC step asks for the left-hand thumb impression, and the upload is labelled Left Thumb Impression. Unlike Odisha, whose field label allows a right thumb or any finger, Rajasthan names the left.
RPSC does not say. Its manual gives the format and the band and nothing else - no ink colour, no pad type, no paper. A stamp pad on plain white paper is the conventional approach, but the Commission has not made it a rule and neither have we.
Press once, firmly, without rolling or sliding - a smudged print is the usual failure and no processing recovers it. Let it dry before photographing. Shoot straight down in even light with no shadow across the paper, and fill the frame with the impression rather than the whole page. This tool finds the impression, trims to it, and measures both the contrast and how much of the area is actually inked, which is the quickest way to see whether it is too light or blotted.
Because 20 KB is a floor. A thumb impression on white paper compresses well, and a tight crop can land under it. RPSC states no dimensions, so this tool raises the resolution to clear the floor rather than padding the file.
No. RPSC captures your photograph live in the portal with a Take Photo button and a five-second timer - there is no file upload for it. The uploads at KYC are the handwritten specimen (PDF, 100 to 200 KB), the English signature, the Hindi signature, and this thumb impression.
No. Everything runs in your browser on your own device. That matters here more than on most pages - a fingerprint is biometric data, and the ordinary way to resize one is to hand it to a stranger's website.
Requirements on this page are quoted from the One Time Registration (OTR) guidelines for candidates published by the Rajasthan Public Service Commission, Ajmer (OTR_Manual_English.pdf, dated 19 May 2026), and from the KYC upload panel reproduced at Figure 7 of that document. The manual’s body text states no figures at all — the format and KB bands appear only on that panel.
RPSC captures the photograph live in the portal with a Take Photo button; there is no photo upload, and no prepared photo file can be used. The uploads are the handwritten specimen (PDF only, 100–200 KB), Full Signature English and Full Signature Hindi (JPEG, 20–50 KB each), and the Left Thumb Impression (JPEG, 20–50 KB). No pixel dimensions, DPI, aspect ratio or ink colour are stated for any of them.
Applications are reached through SSO Rajasthan, as is RSSB / RSMSSB (the Rajasthan Staff Selection Board) — same login, different recruiter. We are not affiliated with either.