SSC Signature Blurry After 20KB? Fix It Without a New Scan
If SSC rejects your signature as blurry after compressing to 20KB, you squeezed quality instead of pixels. Crop tight around the ink, resize to about 709 x 236 px (6.0 x 2.0cm at an assumed 300 DPI), then compress to 10-20KB as a JPG. Sign with a darker pen on white paper and start from the original photo.
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If an SSC form says your signature is blurry or unclear after you squeezed it to 20KB, the fix is almost never a new camera. Shrink the pixels first, then let the file size fall by itself, instead of crushing the quality setting. A signature of about 700 x 235 pixels on plain white paper usually fits inside 10-20KB without turning to mush.
Why the signature turns blurry at 20KB
Phone photos are huge: a signature snapped at 4000 x 3000 pixels can weigh several MB. Most people then push a "compress to 20KB" slider all the way down. The tool throws away detail from every pixel, and thin pen strokes are the first thing to go. The strokes smudge into grey and the form can be rejected as blurry.
The better order is the reverse. Cut the empty paper around the signature, set the size in pixels, and only then compress. A small, tight image has far fewer pixels to store, so it reaches 20KB at a much higher quality.
What SSC actually asks for
The SSC CGL 2026 notice (21 May 2026) asks for a scanned signature as JPEG/JPG between 10KB and 20KB, and says applications with blurred or miniature signatures are rejected. So a signature that is too faint and one that is too small inside its frame both count against you. The notice gives about 6.0 x 2.0cm in para 9.6 but 4.0 x 2.0cm in Annexure-IV, so the two do not agree. The SSC GD notice (1 December 2025) says about 6.0 x 2.0cm at 300 DPI, horizontal. Always follow the current notice for your exam. The photo for these exams is captured live, so this post is only about the signature file.
| Check | What to aim for |
|---|---|
| Format | JPG or JPEG |
| File size | 10-20KB |
| Shape | Wide and short, horizontal |
| 6.0 x 2.0cm at 300 DPI | about 709 x 236 px |
| 4.0 x 2.0cm at 300 DPI | about 472 x 236 px |
| Ink and paper (our advice) | Dark ink, plain white paper |
Source: SSC CGL 2026 notice (2026) and SSC GD notice (2025). The pixel figures are our own arithmetic: centimetres divided by 2.54, times 300. The GD notice names 300 DPI; for CGL it is our assumption.
Skip the guesswork with the SSC signature resizer. It is built for the SSC signature rule: JPG, 10-20KB, about 6 x 2cm.
SSC Photo & Signature Resize
Same settings as the full tool page.
Runs in your browser. Your file never leaves your device. Open the full SSC Photo & Signature Resize page
Fix it in four steps
- Sign again on plain white paper. Use a dark pen with a medium tip, since a thin pen breaks up after compression.
- Take the photo in daylight. Hold the phone flat above the paper to avoid shadows and slanted lines.
- Crop tight. Leave only a thin white margin round the signature.
- Resize to the pixel size, then compress. Check the file lands between 10KB and 20KB.
Keep your untouched original photo. If the portal complains, start again from the original, not from the already squeezed copy. Each round of compression on a copy loses more detail.
A worked example: from phone photo to 15KB
Say your phone gives a signature photo of 4000 x 3000 pixels, mostly empty paper. The signature itself covers a band about 1800 pixels wide. Crop to that band, leaving a thin margin, and the picture is already a wide strip. Resize it to 709 pixels wide, keeping the shape, and the page is now a small fraction of the original size.
Now compress as a JPG. Because there are so few pixels left, a mild quality setting is usually enough to land between 10KB and 20KB. The strokes stay dark and sharp. Compare that with squeezing the full photo: same 20KB, but the ink is spread over millions of pixels and nothing is crisp.
On the phone: cropping and scanning tips
- Android. Open the photo in Google Photos or your gallery, tap Edit, then Crop, and drag the box tight round the signature. Save as a copy.
- iPhone. Open the photo, tap Edit, then the crop icon, and trim the edges. If your camera saves HEIC, switch to JPG under Settings > Camera > Formats > Most Compatible before you click it.
- Lighting. Sit near a window, not under a tube light that casts your hand's shadow on the paper.
- Straight lines. Keep the paper edge parallel to the phone edge so the signature is not tilted.
If the signature is still rejected as blurry
- It is below 10KB. Too small a file can also look smudged. Raise the quality a little so the file sits nearer 15KB.
- Strokes are thin or pale. Re-sign with a darker pen. Light grey ink cannot be rescued by software.
- The image is stretched. If you forced the picture to 6.0 x 2.0cm without cropping first, the letters get squashed. Crop to the right shape first.
- Grey shadows on the paper. Shadows cost bytes and blur the edges. Clean the background to white.
The full reasoning behind the 10KB minimum is in how to make a signature between 10KB and 20KB, and the notice figures for CGL are in the SSC CGL size guide.
Does emailing the helpdesk help?
For a file that is plainly over or under the limit, a mail is unlikely to help, because the rule is set in the notice and a corrected file is the quicker route. If the live photo capture, not the signature, is the problem, read the SSC live photo capture tips. A portal outage cannot be fixed on your side; try again later.
Common mistakes
- Compressing the full 12-megapixel photo straight to 20KB.
- Compressing the same file again and again.
- Adding a name or date next to the signature when the notice does not ask for it.
- Saving as PNG or WEBP, not JPG.
- Leaving a big white border so the signature is tiny inside the frame.
Tools for this
Frequently asked questions
Why does my signature look blurry after compressing to 20KB?
The compressor removed detail from every pixel of a very large image. Crop and resize to a small pixel size first, then compress, and the same 20KB holds much sharper strokes.
What size should an SSC signature be in pixels?
The notices give centimetres, not pixels. At 300 DPI, 6.0 x 2.0cm is about 709 x 236 px and 4.0 x 2.0cm is about 472 x 236 px. The CGL 2026 notice mentions both sizes, so check your own notice.
Can the signature be below 10KB?
The SSC range is 10-20KB, so a file under 10KB breaks the rule. Raise the quality a little to land near 15KB.
Should I mail the helpdesk if the upload keeps failing?
A mail does not change the rule in the notice. Fix the file first. Write to the helpdesk only if a correctly sized, clear file still fails.
Why does the SSC form say image check failed or blurry every time?
The CGL notice rejects blurred or miniature signatures, so first make sure the file is cropped tight, dark and within 10-20KB. If a correct file still fails, we cannot confirm the cause from the notice; try again later or on another browser or device.
Live photo capture is not working, and do I upload a photo too?
They are separate steps. For SSC CGL, CHSL and GD the photo is captured live through webcam or the mySSC app, with no cap, mask or glasses, so this fix is only about the signature file. Check your own notice for any other upload.
Is the server down, and is laptop or mobile better for the upload?
We cannot tell from outside. If your signature meets the notice and the form still fails, retry later and watch ssc.gov.in for official notices rather than social posts about extended dates. For the signature, use whichever device lets you pick the cropped JPG file. The notice asks for a scanned signature, and a sharp phone scan on plain white paper in 10-20KB JPG is the usual way to meet it.
Sources
- SSC Combined Graduate Level Examination 2026 notice (checked 2026-11)
- SSC Constable (GD) 2026 notice (1 December 2025) (checked 2026-11)
Rules and limits change. Always check the latest official notification or portal before you submit a form.