How do I turn a phone photo of my signature into a clean scan?
To turn a phone photo of your signature into a clean scan, upload it to FixDoks's signature resizer, which whitens the paper, darkens the ink, trims the empty space, and saves a JPG at any pixel size and KB range, such as the IBPS, SSC, RRB or UPSC presets.
Signature Resizer at a glance
| Default preset | JPG, 140 x 60 px, 10 to 20 KB |
|---|---|
| Processing | In your browser; your files are not uploaded |
| Price | Free to use, no watermark |
| Download | First download free, then ₹49 for 2 months of unlimited downloads (US$3 outside India) |
| Files at once | 1 free, up to 30 with a plan |
| Works on | Chrome, Edge, Safari and Firefox on Windows, Mac, Android and iPhone |
How to use Signature Resizer and Cleaner
- Sign on white paper and take a photo from directly above.
- Click Select signature. The paper is whitened, the ink darkened and the empty space trimmed.
- Choose a preset or enter the width, height and KB range. Adjust the crop box if needed.
- Click Resize signature to download the JPG.
From phone photo to clean signature
A photo of a signature taken on a phone rarely looks good: the paper comes out grey or yellow, one corner is darker than the other, and there is a lot of empty space around the signature. Forms and documents need something that looks like a scan: pure white paper, crisp dark ink and a tight crop. This tool does that automatically and then resizes the result to the exact pixel size and file size you need.
What does the cleanup do?
- Evens out lighting. It measures how bright the paper is in every part of the photo and corrects for shadows and gradients, so a photo taken under a lamp looks evenly lit.
- Whitens the paper and darkens the ink. Paper becomes pure white and strokes become solid. You can keep the original ink colour or make it black or blue.
- Trims empty space. It finds the edges of the signature and crops close around it with a small margin.
Use the Cleanup strength slider if thin strokes disappear (lower it) or grey smudges remain (raise it).
Resize for any form
Pick a preset such as IBPS/SBI 140 × 60 px (10 to 20 KB), SSC, RRB, PAN or UPSC, or type your own width, height and KB range. The crop box keeps the right shape, and the file is saved as a JPG inside the range. For exam specific rules, the dedicated pages list each notification's requirements.
Also useful for
- Adding a signature image to a Word document, email footer or invoice template.
- Preparing a signature to place on a PDF with a PDF signing tool.
- Cleaning a photo of a thumb impression or a handwritten note (untick the trim option for full pages).
Tips for a good signature photo
Sign with a gel or ink pen rather than a ballpoint, because the stroke is darker and more even. Sign on a smooth surface, place the paper on a table near a window, and hold the phone directly above it so the signature is not skewed. Fill most of the frame with the paper.
Why a cleaned signature matters
Upload portals shrink your signature to a small box, often 140 × 60 pixels. At that size, a grey background and soft strokes turn into a muddy smudge that reviewers may reject as unclear. A cleaned signature keeps high contrast even when very small, and it prints better on admit cards and ID cards.