SSC Photo & Signature Compressor

Last reviewed: May 2026

The Staff Selection Commission (SSC) caps your candidate photograph and signature inside narrow KB windows — and unlike UPSC's relatively generous 300 KB ceiling, SSC's photo limit is typically 50 KB and signature 20 KB. Sukat compresses both files to the exact range that SSC CGL, CHSL, MTS, GD Constable, JE, Stenographer, JHT, CPO, and Selection Posts applications require — entirely in your browser.

Compress SSC photo & signature →
SSC publishes the photo and signature specs inside each exam notification, and the numbers occasionally shift between cycles. The values below reflect recent OTR-era guidance — always cross-check the current notification on ssc.gov.in before submitting.

SSC OTR photo & signature requirements

FileFormatSize rangeDimensions
PhotographJPG / JPEG20 KB – 50 KB≈ 3.5 cm × 4.5 cm
SignatureJPG / JPEG10 KB – 20 KB≈ 4 cm × 2 cm

SSC additionally specifies a recent passport-style photograph (within six months of upload) against a plain light-coloured background, and a clean signature on plain white paper signed in dark blue or black ink.

How to compress your SSC photo & signature

  1. Upload both files. Drop your photograph and your signature scan onto Sukat. The two files can sit in the same session — there's no separate workflow.
  2. Crop and clean. For the photo, click Crop, frame the head and shoulders, and (if the background is busy) use Remove Background to drop in plain white. For the signature, crop tight to the ink so blank paper isn't eating up KB. Set output format to JPEG for both.
  3. Set KB targets and download. Photo: target 40 KB to leave a small safety margin under the 50 KB ceiling. Signature: target 18 KB under the 20 KB ceiling. Click Convert & Download; both files save locally with a .jpg extension.

Which SSC exams use this format?

Once you complete the SSC OTR (One-Time Registration), the same photograph and signature pair is reused across every SSC exam application. The format applies to:

If your exam is UPSC instead of SSC, the KB ranges are different — see UPSC Photo & Signature Compressor. For just the signature side, Compress Signature to 20KB covers the standalone case.

Why Sukat for SSC uploads

Hits the SSC limit on the first try. SSC's 50 KB photo ceiling is tighter than most candidates' camera-roll originals, which means a quality slider rarely lands on the right value first time. Sukat takes the constraint directly: 50 KB cap, find the highest quality. The binary search runs internally — you see the result, not the loop.

Tight signature compression without losing legibility. A signature is high-contrast line art and JPEG handles that pattern very efficiently. A 600 × 200 px signature scan compresses cleanly to under 20 KB with no visible quality loss — Sukat picks the highest quality that fits.

Privacy. Your photo and signature are sensitive identity assets. Sukat runs entirely in your browser via the Canvas API — these files never reach a server. Switch to airplane mode after the page loads to verify; the conversion still works because there's no network call.

Background fix built in. SSC's portal expects a plain light-coloured background. If your photo was taken indoors or against a pattern, click Remove Background — the AI segmentation model runs in your browser and offers a colour picker. Pick light grey or white, apply, and compress.

Hindi UI for first-language candidates. Sukat's interface is available in 10 languages, including Hindi. SSC traffic skews heavily Indian-language; most online compressors are English-only.

Phone-first. Most candidates fill out OTR on mobile. Sukat works on iPhone Safari and Android Chrome with the same drop / set-target / download flow — no mobile upsell.

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FAQ

What are the SSC photo and signature size limits exactly?

SSC's OTR portal commonly specifies a JPG photograph between 20 KB and 50 KB at roughly 3.5 × 4.5 cm dimensions, and a JPG signature between 10 KB and 20 KB. Earlier notifications used a tighter range. Specifications can shift between cycles — always cross-check the current notification on ssc.gov.in.

Which SSC exams use the OTR photo and signature pair?

Once registered, the OTR pair is reused across SSC CGL, CHSL, MTS, GD Constable, JE, Stenographer, JHT, CPO, Selection Posts, and most other SSC exams. The photo must be reasonably recent — within six months per standing instructions — so refresh it annually.

Can I use the same photo for both UPSC and SSC?

You'll likely need to compress to different KB targets — UPSC accepts up to 300 KB while SSC commonly caps the photo at 50 KB. The photograph itself can be the same shot, just compressed to two different files. Keep the original at full resolution and run it through Sukat with the right target for each exam.

Does Sukat upload my photo or signature anywhere?

No. Sukat runs entirely in your browser. Your photo, signature, and any other identity documents stay on your device. Switch to airplane mode after the page loads to verify — compression still works because there's no network call.

My signature scan has a coloured paper background — can I clean it up?

Yes. Click Remove Background; the AI segmentation model runs in your browser to drop the paper. Then compress the cleaned PNG to 10–20 KB JPG. For ink-on-near-white-paper scans, simple JPEG compression is usually enough.

Can I do this on my phone?

Yes. Sukat works on iPhone Safari and Android Chrome with the same drop, crop, set-target, download flow. iPhone HEIC photos work directly without converting to JPG first.

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