Put a photo and signature in one image
A photo-and-signature upload is judged twice: once by a machine counting pixels and kilobytes, and once by a person who has to read your signature. Here is how to pass both on the first try.
Start with the notice, not the picture
Every recruitment and exam notice states its own numbers, and they differ more than people expect. The India Post Payments Bank notice of November 2025, for example, asks for a 200 × 230 pixel photo between 20 and 50 KB and a 140 × 60 pixel signature between 10 and 20 KB — while a state scheme accepts anything square from 350 to 1000 pixels and up to 300 KB. Some notices state a pixel size; others only a kilobyte ceiling. Before you touch a picture, write down three things from your notice: the pixel size (if any), the kilobyte range, and whether it wants one file or two.
Most ask for two separate uploads. A few forms and many offline counters want a single picture with the photo above or beside the signature. We have not found an official notice that asks for the combined file, so if yours does, its stated size wins over any default.
The signature is where files fail
A signature photographed on a desk comes out as a grey sheet with a small dark scribble in the middle. Shrunk to 140 × 60 pixels, the scribble becomes three pixels tall and the grey becomes the whole file. Three things fix it:
- Whiten the paper, darken the ink. Measure the brightest common tone (the paper) and the darkest (the ink) and stretch everything between them. Thresholding to pure black and white looks cleaner but erases light pen pressure, which is exactly the part a reviewer compares.
- Crop to the ink with a margin. Cut away the empty sheet so the signature fills the box, but keep clear paper round every stroke — a loop that touches the edge looks cut off and may be refused.
- Sign in black on white. Many notices ask for black ink. Converting blue ink to black after the fact is possible, but a fresh signature in black pen is always better.
Resize once, from the original
Each resize throws away detail, and thin strokes suffer first: shrink a signature twice and its lines go uneven, some pixels darker than others. Work from the original photo and the original signature and scale each straight into its final box, in halves for big reductions with a careful last step. Never enlarge a small picture to meet a pixel size if you can avoid it — the extra pixels are guesses and look soft.
Keep the photo’s shape honest too. If the box is 200 × 230 and your photo is a 3 × 4 phone portrait, the proportions do not match; either trim evenly from top and bottom so it fills the box, or fit it whole with a white band beside it. Stretching it to fit is the one choice that is always wrong.
Hit the kilobytes with quality, not luck
JPEG quality is the lever for weight. The right method is a search: start at full quality and step down until the file is inside the range, keeping the highest quality that fits. Dark ink on white paper is hard on JPEG — too low a quality leaves a faint ripple beside each stroke — so look at the signature after saving. Two details catch people out. First, a plain, small picture can come in under a minimum even at full quality; the honest fix is a larger pixel size if the notice allows one, not filler bytes. Second, portals disagree about whether a KB is 1,000 or 1,024 bytes, so aim under the smaller reading of the maximum and over the larger reading of the minimum.
Doing it here
Merge photo and signature does each step above in one place: named photo and signature slots, presets copied from dated notices (with a Custom option for any other form), signature clean-up, a quality search to your kilobyte range that keeps the pixel size unless you allow otherwise, and a check list with the exact byte count before you save. It makes the combined file or both separate files from the same two pictures, and neither picture leaves your device.
Presets and examples here are copied from published notices and may change between cycles. Check the current notice for your form before uploading.