Free · made for Indian online forms
Sign on white paper, take a picture of it with your phone, and get back the signature alone: the ink is found, the rest of the sheet is dropped, the paper is cleaned to white, and not one pen stroke is ever cut off. No scanner, no Paint, no cropping by hand.
What it does
Most resizers would take the middle of that sheet and hand back a grey rectangle with half a pen stroke in it, because a 4:3 photo forced into a frame three times wider than it is tall has to lose something. This one looks for the ink first.
The numbers
The sizes below are the ones that come up most often at a counter. The notice for your own exam or portal wins — specifications change between recruitment cycles, and a few portals ask for something else entirely, so read the instructions on the upload page before you start.
| Where | Pixel size | File size | Format |
|---|---|---|---|
| SSC (CGL, CHSL, MTS, GD) and IBPS | 140 × 60 | 10 – 20 KB | JPG |
| Some recruitment portals use a wider box | 240 × 80 or 300 × 80 | 10 – 20 KB | JPG |
| PAN / NSDL e-Sign | 354 × 157 | 10 – 50 KB | JPG |
| Passport Seva | no fixed box | up to 100 KB | JPG |
| Thumb impression, where one is asked for | 240 × 240 | 20 – 50 KB | JPG |
Each of these is a button in the tool — Signature, Signature, wide, PAN / e-Sign, Thumb impression — so nobody has to remember a number. Sign in black or dark blue ink on plain white paper: that is what the instructions on most portals ask for, and it is also what comes out cleanest.
How to do it
Black or dark blue ink, plain white paper, decent light, phone held straight above. A scan works just as well if you have one.
That sets 140 × 60 pixels and a 10–20 KB range together, and turns on signature mode. Tap PAN / e-Sign or type your own numbers if the form says otherwise.
It starts by itself — there is no button to find. The ink is located, the sheet around it is dropped, the paper is cleaned to white, and the whole signature is fitted into the frame the form asked for.
The list shows the finished file, not the one you put in. If it took the wrong part, tap the picture and drag a box around the right one.
Why this one
A signature is wide and a sheet of paper is not, so forcing one into the other has to lose something. The whole signature is fitted into the frame and the gap becomes white border — which, on a signature, nobody can see. Your last stroke is still there.
Paper under a shop's tube light is never white, and a photo has a gradient across it. The paper's own shade is measured and the ink is whatever sits well below it, so a grey or yellowish sheet still comes out clean white with the pen colour kept.
If the ink cannot be told apart from the paper — a pencil, a dark photo — it keeps the whole picture and says so, rather than guessing and handing you half a signature. Then you can draw the box yourself, or take the photo again.
And nothing is uploaded. A signature is a legal mark; it is worked on inside your own browser and never reaches our server, so you can pull the network cable out and the tool still works.
Questions
Open the Image and Signature Resizer, tap Signature and add your picture. That sets 140 × 60 pixels and a 10–20 KB range, and the work starts on its own. The size you see on screen is the real byte length of the file you are about to download, measured after encoding, so a form that checks 20 KB will see exactly what the tool showed you.
Both usually ask for 140 × 60 pixels, between 10 and 20 KB, as a JPG, signed in black ink on white paper. Read your own notice before uploading, because these specifications do change between recruitment cycles and other portals ask for other sizes — PAN and NSDL e-Sign want 354 × 157 pixels at 10 to 50 KB.
Yes — that is what this is built for. Sign on plain white paper, hold the phone straight above it in good light and take the picture. The tool finds the ink, drops the rest of the sheet and cleans the paper, so a phone photo ends up looking like a scan. A real scan works too, and needs nothing different.
Yes. The shade of your own paper is measured rather than assumed, so a sheet that photographed grey or yellow comes out true white, with the pen left its own colour — a blue pen stays blue. Flat white also costs very few bytes, which is what makes 20 KB easy to reach without the signature going blurry.
No. For a signature the whole picture is fitted inside the frame rather than cropped to fill it, so a stroke is never lost; any difference in shape becomes white border. That is the opposite of what happens to a passport photo, where the middle is taken on purpose, and it is why signature mode exists as its own setting.
Yes. Tap the picture in the list and drag a box around the one you want — only what is inside the box is used. The box opens where the tool found ink, so most of the time there is nothing to do but look at it, and a part you choose by hand is never cropped again afterwards.
A range means the file must land inside it: too small is refused as often as too big, and a clean signature on white is a very small JPG. When a result falls under the minimum, invisible padding is added to the file to lift it over the line, without changing a single pixel of the picture, and the tool tells you it did that.
No. A picture is worked on entirely inside your own browser and never reaches our server or anybody else's. You can disconnect the internet after the page loads and it still works. Only a PDF goes to our server to be compressed, and a signature is not a PDF.
It is free and there is nothing to install. You sign in once with a free Your Astha account, which also unlocks the other Easy Tools, and it runs in any modern browser on a phone or a shop computer.