OnlineToolBench

Files never leave your device

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Resize your signature & photo to exam specs

Pick your exam, crop, done — the output matches the official dimensions and file-size band exactly, including the minimum size most tools ignore. Nothing is uploaded.

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Official photo & signature specs, exam by exam

ExamPhotographSignature
SSC (CGL, CHSL, MTS, GD…) 3.5 × 4.5 cm, 20–50 KB JPEG (CGL/CHSL capture it live by webcam) 4 × 2 cm, 10–20 KB JPEG
UPSC (OTR — CSE, ESE, CDS, NDA) 550–1000 px square, 20–300 KB JPG, name & photo date printed at the bottom 350–550 px square, 20–300 KB JPG
IBPS (PO, Clerk, RRB, SO) 200 × 230 px, 20–50 KB JPEG 140 × 60 px, 10–20 KB JPEG
NEET (NTA) Passport 3.5 × 4.5 cm, 10–200 KB JPG (plus a postcard 4×6″ copy) 275 × 118 px, 4–30 KB JPG

Verified against official notifications in July 2026. Commissions occasionally revise specs between cycles — the preset summary above the tool always shows exactly what will be produced, so you can compare it with your notification in seconds.

Why the minimum file size matters

Everyone knows uploads have a maximum size. What surprises most applicants is the minimum: a crisp signature on white paper often compresses to 5–8 KB, and a portal demanding 10–20 KB rejects it as “invalid file”. OnlineToolBench is built for this exact trap — it compresses into the band, not just under the ceiling, padding the file invisibly when needed. Your signature looks identical; the portal sees a perfectly sized file.

Getting a signature the portal will accept

Sign in your normal running hand — SSC, IBPS and NTA all explicitly reject capital-letter signatures. Use a black-ink pen on plain white paper, and make the signature large on the page; a bigger source image crops and scales down cleanly. Photograph it from directly above, avoiding shadows, then crop tightly around the ink here. The same signature must be used on the application, admit card and answer sheets, so keep the paper safe.

Frequently asked questions

Why do exam portals keep rejecting my signature?

Almost always one of four reasons: the file is outside the required KB band, the dimensions are wrong, the signature is written in capital letters, or it was signed in blue ink instead of black. This tool fixes the first two automatically; the ink and letter rules you have to follow when signing.

The portal says my file is too SMALL. How is that possible?

Exam portals enforce a minimum as well as a maximum — a 6 KB file fails a “10–20 KB” rule just like a 40 KB one. Small signatures compress very well, often below the minimum. OnlineToolBench adds invisible, standards-compliant padding inside the JPEG so the file lands safely inside the band without changing the image at all.

Can I just photograph my signature with my phone?

Yes — that’s what most applicants do. Sign with a black pen on plain white paper, photograph it from directly above in good light, and crop tightly here. Avoid shadows across the paper; the whiter the background, the better the result.

Are the SSC, UPSC, IBPS and NEET specs here up to date?

The presets follow the official notification specs as verified in July 2026 — including UPSC’s newer OTR rule of 350–550 pixel square signatures at 20–300 KB, which many older tools get wrong. Commissions occasionally revise specs between cycles, so always glance at your own notification; the preset summary shows exactly what this tool produces.

What does the Photo + Signature mode do?

It processes both files against the same exam’s official rules in one go — for example IBPS’s 200×230 px / 20–50 KB photo and 140×60 px / 10–20 KB signature — and gives you each file plus a single ZIP containing both, named and ready to upload.

Is anything uploaded to a server?

No. Cropping, resizing and compression all run in your browser on your own device. Your photo and signature never leave your phone or computer.