Signature Dimensions by Exam Board: One Reference Table

Signature uploads fail on exact pixel width and height, not how big your signature looks on paper. Use this board-by-board reference, then export JPGs that match both dimensions and KB limits.

Key takeaways

• Every major exam board publishes signature width × height in pixels, plus a KB min–max band separate from photo rules.
• UPSC OTR requires three stacked signatures in one file; most SSC and banking forms want a single signature image.
• Signature files are smaller in pixels than photos but equally strict about exact integers.
• Thin ink strokes compress to smaller KB — signatures hit minimum KB failures more often than photos.
• A signature dimensions by exam board table saves time when you apply to multiple boards in one season.
• Black or blue ink rules are manual-review concerns; pixels and KB are automated-upload concerns.

Why signature dimensions differ from photo dimensions

Photos must show your face at a regulated crop. Signatures only need readable ink within a small rectangle. Portals therefore assign smaller pixel boxes — but still exact ones. Uploading a photo-sized canvas with a tiny signature centered in it fails signature dimensions by exam board checks because the file dimensions are wrong even though the ink looks fine.

Automated validators do not judge handwriting style at upload; they read file metadata and byte length. Manual verification may come later. Your job at upload is purely technical: match the numbers in the bulletin.

Master reference: signature dimensions by exam board

Numbers shift between cycles. Treat this as an orientation table, not a substitute for the PDF on the desk in front of you.

Requirements by major exam board

UPSC: triple signature in one file

UPSC is the outlier. One JPG must contain three separate handwritten signatures stacked vertically on white paper, black ink, scanned or photographed cleanly. Pixel limits often allow a taller canvas than SSC because of triple height.

Deep walkthrough: UPSC triple signature walkthrough. Photo rules are separate — do not crop the signature sheet to photo dimensions.

When applicants search signature dimensions by exam board lists, UPSC triple layout is the number-one mismatch with banking-style single-box habits.

SSC and paramilitary forms

SSC GD and related notifications usually specify a wide-short rectangle near 140×60 pixels and a tight KB cap near 20 KB maximum with a 10 KB minimum. The signature should fill most of the box without touching edges — but the file itself must be exactly the pixel rectangle, not a larger scan trimmed visually in the portal preview.

Banking / IBPS signatures

IBPS PO and clerk cycles mirror SSC-style single signatures with similar pixel and KB bands. Because thousands of candidates upload simultaneously, validators are strict and unforgiving of off-by-one pixels.

How to measure and export signature files

1. Export or scan to JPG.
2. Open Properties → Dimensions in pixels (not inches).
3. Compare width and height to bulletin.
4. Check KB separately.
5. Zoom to 100% to ensure strokes are not grey smears from over-compression.

If dimensions fail, re-crop the scan — do not upload a full A4 sheet unless the bulletin explicitly allows it (rare).

Whichever capture method you use, export explicit pixel dimensions last. Filters are for appearance; validators read integers.

KB compression for signatures without blur

Signatures compress smaller than photos because of white space. That makes minimum KB failures surprising — a crisp 8 KB export may need slightly higher quality to cross a 10 KB floor.

Lower quality gradually. If strokes fade, raise quality and slightly crop tighter so less white enters the frame, increasing KB without blurring ink.

Help articles on photo DPI errors and HEIC not accepted apply when exports come from phones — convert and set DPI metadata deliberately, not accidentally.

Ink color, manual review, and common mistakes

Bulletins often require black or blue-black ink. Automated portals may not detect color at upload, but document verification can. Pixel-perfect uploads still fail later if ink color violates rules — read both technical and manual sections of the notification.

• Uploading one signature when three required (UPSC).
• Centering a small signature on a large white canvas without cropping output pixels.
• Using the photo pixel box for the signature file.
• Saving as PNG with transparency — convert to JPG white background.
• Re-compressing a rejected signature instead of re-scanning from paper.

Each mistake produces a different error message, but all trace back to ignoring signature dimensions by exam board tables.

Multi-board workflow and checklist

Notifications print photo requirements first and signature requirements second. Build two exports from two workflows. Photo background must be plain; signature paper must be plain — but dimensions differ. Never copy photo width/height into the signature export dialog.

Rare errata notices update pixels or KB. Bookmark the official site and re-read before upload on deadline day. Coaching WhatsApp forwards often lag errata by days.

You cannot change bulletin pixels, but you can use more of the box — wider strokes, larger handwriting that still fits margins — before export. Legibility at verification matters after automated checks pass.

Worked example: Bulletin 140×60 px, 10–20 KB. Applicant uploads 800×600 scan at 95 KB. Validator rejects. Crop tool set to 140×60, quality adjusted to 14 KB, upload succeeds. Handwriting unchanged.

Format, DPI, and state PSC variants

PhotoFix signature presets encode common board pixel targets so you export once with both dimension and KB visibility. Still verify against your PDF — presets track typical cycles, not every state PSC variant.

Phone exports may embed HEIC conversion artifacts or odd DPI tags. If pixels look correct but upload fails, read photo DPI error and HEIC not accepted before rescanning ink.

State commissions copy SSC or UPSC patterns but change numbers. Always search the PDF for "signature" and "dimension" — do not assume state equals SSC defaults because the form layout looks similar.

Exam portals validate file size in kilobytes separately from pixel dimensions. A photo can look sharp on screen yet fail because the exported JPG is outside the stated minimum or maximum. Always measure the saved file on disk, not a preview thumbnail. Re-export from your original source photo when adjusting KB rather than re-compressing an already compressed export. Open the official notification beside your file manager so you compare against the current cycle numbers, not last year's coaching handout. PhotoFix helps you land inside the range without guesswork.

Guides covering signature dimensions by exam board help you match bulletin limits before deadline night.

FAQ

Do all exam boards use the same signature pixel size? No. SSC, UPSC, IBPS, and state boards each publish their own width × height.

Is signature KB limit the same as photo KB? Often lower maximum and similar minimum — check both lines in the bulletin.

Why does UPSC need a taller signature file? Three stacked signatures require more vertical pixels in one JPG.

Can I scan an entire page and upload? Only if dimensions match after crop. Full A4 scans almost always fail.

What ink color is safest? Black on white paper when the bulletin specifies black — especially UPSC.

Will blue pen work on SSC? Many SSC bulletins allow blue-black; read your specific notice.

How do I hit minimum KB without blurring strokes? Tighten crop to reduce empty white, then slightly raise JPEG quality.

Are signature dimensions width × height or height × width? Bulletins list width then height — match exactly; swapping fails validators.

Can I reuse a banking signature JPG for SSC? Only if pixel and KB specs match both bulletins — often they do not.

Does PhotoFix support signature exports? Yes — use signature presets and verify output against your table row.

What file format for signatures? JPG unless the bulletin explicitly allows otherwise.

Where is the official source? Recruitment notification PDF on the conducting body's website — not social media forwards.

Fix it now

Open your bulletin signature line, crop your scan to the exact pixel width and height, adjust KB into the stated band, and upload separately from your photo file. For UPSC, prepare triple signatures before cropping.

Use this signature dimensions by exam board reference as a map, then let the PDF override any row when numbers differ. Save each successful export in an exam-specific folder so later stages reuse the correct signature instead of an old photo-sized mistake.