What is the official signature size for SSC exams?

The official signature size for SSC exams must be between 10 KB and 20 KB in JPEG/JPG format. Physical dimensions must be 6.0 cm width x 2.0 cm height at a resolution of 300 DPI.

Why is my signature being rejected on the SSC portal?

Rejections typically happen if the file size is outside 10-20 KB, or if background shadows are present. This tool removes background shadows, enforces 6x2 cm dimensions, and compresses the output to fit parameters.

Is my signature uploaded to any server?

No. The processing and conversion is done offline locally in your browser. Your signature image is processed on your device and is never uploaded.

SSC Sign — Free SSC Signature and Photo Tools

Runs in your browserThe selected image is processed on your device with local canvas tools.

Shows the actual outputPreview the crop, dimensions, and approximate file size before saving.

Notification comes firstSSC requirements can vary, so the active exam instructions remain the final check.

Upload your signature Tap to browse, drag & drop, or paste image

Common signature settings

File size: Some SSC forms use a 10–20 KB JPG range.
Shape: A common example is a 3:1 signature area, such as 6 × 2 cm.
Pixels: 709 × 236 px is the rounded 300 DPI equivalent of 6 × 2 cm.
Format: JPG/JPEG is commonly requested.
Appearance: Clear dark ink on plain, light paper is easiest to inspect.

These are practical reference values, not a promise that every SSC exam uses the same limits. Check the official notification before uploading.

Before you upload

Open the downloaded file and compare it with the current form instructions. Check the file extension, byte size, proportions, visible signature, and background. This tool can resize, whiten, and compress an image, but it cannot determine whether a particular notification expects a scanned signature, a live capture, a different file range, or a different ratio.

Quick answers

How does the whitening contrast work?

It lightens pixels that are close to the paper background and keeps darker strokes more visible. Very uneven lighting or a low-contrast signature may still need a new photograph.

Is my signature secure and private?

The image is read and processed by this page in your browser. It is not uploaded to an SSC Sign server. Page analytics and third-party assets are separate from the image-processing step.

What if my file size is still below 10 KB?

If the output is outside the range in your notification, try a clear source image, adjust the whitening and margin controls, and inspect the result. Do not damage readability just to reach a number.

How to prepare a clean signature

The formatter works best when the original is legible. Sign on plain, unruled white paper with a dark blue or black pen. Keep the paper flat, use even light, and leave a small margin around every stroke.

Place the paper near a window or under broad, even light.
Hold the phone parallel to the paper to avoid a slanted crop.
Make sure no finger, shadow, line, or fold crosses the signature.
Keep the original image until the official application accepts the upload.

What this tool changes

After you choose an image, the page crops it to the signature canvas, applies a configurable background-whitening pass, adds whitespace around the strokes, and searches for a JPEG quality that fits the example size range.

What it cannot decide

It cannot confirm the current exam’s exact rules, judge whether a signature matches your identity, or guarantee portal acceptance. Read the signature guide and compare the final file with the active notification.

One site, two practical workflows

SSC applications may ask for more than one image. Use the photo formatter to crop and compress a portrait image locally, then read the photo guide for capture and upload checks. The two tools are separate so you can use the correct workflow for each file type.

For background on the project and its privacy model, visit About SSC Sign or read the privacy policy.