UPSC photo and signature size: 20–200 KB, 20–100 KB, and the three-signature rule

Two files stand between you and a submitted UPSC application: photo.jpg and signature.jpg. The portal is strict about both — not just the upper size limit that everyone expects, but a lower limit too, plus a background rule, a face-coverage rule, and (for the signature) a rule about how many times you sign. Most first-attempt rejections come from one of those secondary rules, not from the file being too big.

Below is what each requirement is for, how to meet it, and where the two files most often go wrong.

The specifications

Photograph

• Format: JPG only
• File size: 20 KB minimum, 200 KB maximum
• Background: plain white, evenly lit, no shadows
• Framing: front-facing, centred, both ears visible, face covering roughly 75 % of the frame
• Expression: neutral — no smile, no frown; eyes open and unobstructed
• File name: photo

Signature

• Format: JPG only
• File size: 20 KB minimum, 100 KB maximum
• Dimensions: longer side about 350–500 px
• Content: three handwritten signatures, one below the other, black ink on plain white paper
• File name: signature

Live capture. Submitting through upsconline.nic.in also requires you to capture a live photograph with your camera at the end of the form. This is in addition to the uploaded photo, and the two are compared. Dress and groom the same way for both.

These are the requirements as documented for the 2026 cycle. UPSC restates them inside the application module each year; if the on-screen text differs from this page, follow the on-screen text.

Getting the photograph right

Start from a real photo, not a selfie

The 75 % face-coverage rule and the plain white background are much easier to satisfy with a photo taken by someone else at arm’s length than with a phone held at your own face. A studio passport photo is fine — it just needs to be delivered to you as a digital file, not a print you photograph afterwards (a photo of a photo introduces glare and colour casts that verifiers flag).

If you take it yourself: stand a metre in front of a white wall, have someone shoot from about 1.5 m away at eye level, in daylight from a window in front of you rather than behind. Crop so your head and the top of your shoulders fill the frame.

Bring it into the 20–200 KB window

A photo from any modern phone or camera is 2–6 MB. Studios often hand over 1–3 MB files. Drop the file into Compress Image to 200 KB. It leaves your pixel dimensions alone unless it has to, and searches for the highest JPEG quality that lands just under 200 KB. For a head-and-shoulders portrait the result is indistinguishable from the original at normal viewing size.

Then check the lower bound. If your source was already small — say a 400 × 500 px image someone WhatsApp-forwarded to you — the output may come in under 20 KB, and the portal will refuse it. WhatsApp recompresses images aggressively, which is why “the photo from the studio’s WhatsApp” is a common failure. Ask for the original file by email or a drive link instead, or, if that’s impossible, use the Image Resizer to bring the image up to about 600 × 750 px before compressing so the file has enough pixels to exceed 20 KB.

What gets photos rejected

• Off-white or coloured background. Cream walls read as “not white”. A bedsheet works if it is actually white and well lit.
• Shadows behind the head. Light from the side throws a shadow onto the wall. Face the light source.
• Glasses with glare. UPSC doesn’t ban spectacles outright, but reflections that hide the eyes do fail. Tilt the head down a degree or two, or remove them.
• Uniforms. Explicitly discouraged. Plain clothing.
• Any editing beyond cropping and compression. Smoothing filters, background replacement, and colour “enhancement” all count as digital alteration.

Getting the signature right

The three-signature layout

Take a plain sheet of white paper and, with a black pen, sign three times in a vertical stack with a finger’s width of space between each. Sign naturally — this is your reference specimen for the exam hall, and it should look like what you’ll write on the attendance sheet under time pressure, not a calligraphy exercise. Don’t sign in capitals; don’t add your name printed underneath.

Capture and crop

Scan at 200 dpi, or photograph straight down in good light. Crop to the three signatures with a narrow white margin. Rotate so the signatures are upright — the portal displays the file as-is, and a sideways signature image is a rejection.

Size it

The dimension guidance is a longer side of 350–500 px. Use the Image Resizer to set the height to 500 px (the stack of three is taller than it is wide), keeping the aspect ratio. Then run it through Compress Image to 100 KB. Because a signature scan is mostly white, it compresses extremely well — the risk is again the lower bound. If the result is under 20 KB, go back to the resizer and increase the height to 700–800 px; the extra pixels lift the file into range without changing how it looks.

Privacy note

The photo you’re preparing here is the same one that appears on your admit card and gets matched to your face at the exam centre. Every tool linked in this guide runs inside your browser — the image is compressed by your own device and never leaves it. You can load the tool page, disconnect from the internet, and it will still work. There is no upload step, so there is nothing for anyone to retain.

Final checks before you submit

Check	Photo	Signature
Format is JPG	✓	✓
Size within window	20–200 KB	20–100 KB
Dimensions	Portrait, face ≈ 75 % of frame	Longer side 350–500 px
Content	Plain white background, neutral face, both ears visible	Three signatures, black ink, upright
File name	photo.jpg	signature.jpg

Then, in the form itself, capture the live photo in the same clothes and lighting you can manage, and you’re through.