What is the UPSC signature size and format?
Recent UPSC notices ask for a JPG signature image between 20KB and 100KB, signed with a black ink pen on white paper. Some cycles now ask for three signatures one below the other on the same sheet, uploaded as one image. This UPSC signature resizer keeps that tall layout at 400 × 600 px, cleans the paper to pure white and holds the file inside the KB limit. The signature is saved in your One Time Registration profile, so read the latest notice on the UPSC website first.
UPSC signature requirements
| Rule | Recent UPSC notices |
|---|---|
| File size | 20KB – 100KB (older cycles: up to 300KB) |
| Format | JPG only |
| Layout | Three signatures one below the other (where asked) |
| Pen | Black ink on white paper |
| Pixels | Older rule: each side 350–1000 px |
Confirm the current format in the notice on upsc.gov.in before uploading on upsconline.gov.in.
The three-signature format explained
UPSC introduced the three-signature sheet so that invigilators can compare your signature with a wider sample. Sign three times in the same way, leaving a small gap between each line, and keep all three inside an area roughly the width of a postcard. Do not write your name, date or roll number next to them. When the image is tall, a single-signature size like 140 × 60 px would shrink it into an unreadable strip, which is why the default here is 400 × 600 px with white padding instead of stretching.
How to make your UPSC signature image
- 1Sign on plain white paper
Use a black ink pen. Sign three times, one under the other, if your notice asks for it.
- 2Photograph it flat
Daylight, no shadow, phone held parallel to the paper.
- 3Choose the layout
Keep 400 × 600 px for three signatures, or pick 600 × 350 px for a single one.
- 4Download when ✓ Valid
The file stays between 20KB and 100KB and is ready for the OTR or application.
Avoid these UPSC signature mistakes
- Capital-letter name instead of a signature. UPSC rejects it.
- Different signatures in the three lines. Keep all three identical.
- Blue or coloured ink. Use black, as the notice asks.
- Cropped edges. Leave a little white margin; auto-crop keeps a safe border.
- File below 20KB. The Minimum KB field is pre-filled to prevent this.
Prepare the rest of your UPSC form
Resize your photograph with the UPSC Photo Resizer and, if required, print your name and date with Add Name and Date to Photo. Clean a grey or shadowed sheet first with Clean Signature Background. For a larger single signature, try Signature to 50KB. Everything runs privately in your browser.
Frequently Asked Questions
What is the UPSC signature size?
Recent UPSC notices ask for a JPG signature between 20KB and 100KB. Older cycles allowed up to 300KB with each side between 350 and 1000 pixels.
Why does UPSC ask for three signatures?
Recent UPSC rules ask candidates to sign three times, one below the other, on white paper and upload it as one image. It helps match your signature at the exam hall.
Which size should I choose for three signatures?
Pick 400 × 600 px. It keeps the tall three-line layout without stretching and stays well inside 100KB.
Can I use blue ink for the UPSC signature?
Black ink is the safest choice. UPSC has specifically asked for black ink pen in recent notices.
My signature file is under 20KB. Will it be rejected?
Type 20 in the Minimum KB box (it is pre-filled). The tool raises quality or adds padding so the file stays between 20KB and 100KB.
Is my signature saved by PhotoKB?
No. It is processed in your browser on your own device.
About this tool
Built and maintained by the PhotoKB Editorial Team. We test every tool with real phone photos, scans and PDFs before each update. Exam and portal values are based on public official notifications. PhotoKB is not linked to any exam body, so always confirm current rules on the official website. Last updated: 8 November 2026.