Merge Photo and Signature

A form has one box marked "Photo and signature", and you have two files. Or a printed form, an ID card request or a local application wants your signature under your photograph as a single picture. Joining them is simple; the parts that go wrong are the size, the file weight and a signature photographed badly. This covers each in turn.

First check that the form wants one picture

Most large application portals do not. They take the photograph and the signature as separate files, each with its own size rule:

• UPSC's upload instructions give separate rules for a file named photo and one named signature.
• GATE's requirements page describes the photograph and the signature as two JPEG files with different shapes.
• Bank recruitment notices that follow the IBPS pattern say the candidate gets separate links for the photograph, the signature, the thumb impression and the hand-written declaration.
• The NEET (UG) 2026 bulletin lists the photograph and the signature as separate uploads with different KB ranges.

For any of these, do not merge anything: resize each file on its own. A combined picture is for the cases that actually ask for one, which are usually smaller: a state or institute form with a single upload box, an offline form you will print, an ID card or library card request, or a document where someone has asked for "photo with signature".

If the instructions do not clearly ask for one combined picture, upload two. A merged file in a photograph-only box will be rejected as surely as a missing one.

Working out the size in pixels

There is no standard size for a combined photo and signature, so the numbers have to come from your form. They arrive in one of three ways.

In pixels. Use them as they are. Choose the last option in the size list and type the photo's width and height and the signature's height.

In centimetres. A screen has no centimetres, so the form is really giving a print size, and you need a resolution to turn it into pixels:

pixels = centimetres ÷ 2.54 × dots per inch

At 200 dots per inch, a 3.5 cm width is 3.5 ÷ 2.54 × 200 = 276 pixels and a 4.5 cm height is 354. A signature strip 1.5 cm tall is 118. Put together, a passport photo over a signature strip is 276 × 472 pixels, which is the first size offered here. At 300 dots per inch the same picture is 413 × 708. If your form names a resolution, use that one; if it names none, 200 is a reasonable choice.

As one size for the whole picture. Split it. For 300 × 400 pixels, a photo of 300 × 300 and a signature of 300 × 100 adds up exactly. The page shows the total under the fields, so compare that line with the form before you download.

The signature usually needs far less height than people give it. A strip about a third of the photo's height is plenty: a signature is wide and short, and a tall box just leaves white space above and below it.

Under the photo or beside it

Under is the usual arrangement and the default: the picture is as wide as the photo, with the signature strip across the bottom. Beside is for a wide box, such as a line on a printed form: the picture is as tall as the photo and the signature sits in a box to its right.

Whichever you choose, the two boxes share an edge with no gap. A form that states one pixel size means the whole of it, and a white margin would have to be taken out of the photo. If you want the two visibly separated, switch on the thin line between them.

Preparing the photograph

The photo box has a fixed shape. A photo of a different shape has two honest options, and you choose:

• Fill the box. The photo is scaled until it covers the box and the overflow is trimmed, the same amount from both sides. This is the default, and it is right when your face is in the middle of the frame.
• Show the whole photo. Nothing is trimmed, and white bars fill the leftover space. Use it when trimming would cut hair or shoulders, and when the form does not mind white at the sides.

It never stretches the photo, because a face that is 5% wider than it should be looks wrong to everyone, including the person checking the form.

If the picture was taken sideways, the Turn buttons rotate it a quarter turn. If your face is well off-centre, crop the photo first, in your phone's gallery, so that the trim does not take an ear.

Preparing the signature

Most rejected signatures are photography problems. Fix those before the file reaches any tool:

1. Sign on plain white paper, unlined. Printed lines are ink, and no clean-up can tell them from your signature.
2. Use a black or dark blue pen with a firm line. A pale ballpoint fades further when the file is compressed.
3. Sign at your normal size. Do not sign in capital letters where the form forbids it: IBPS-pattern bank notices state that a signature in capital letters shall not be accepted.
4. Photograph it flat, from directly above, in even light. A shadow of your phone across the paper is the most common fault.

The tool then does two things, each of which you can switch off:

• It cuts away the empty paper. It looks for where the ink is and keeps that area with a small margin, so a signature in the middle of a full sheet does not come out as a speck.
• It makes the paper white. Grey, yellowed or shadowed paper is turned white while the strokes are kept and darkened slightly.

Both are judgments about what is ink. If there is other writing on the sheet, the trim will keep it; cover it or crop the photo first. If the clean-up removes a faint part of your signature, switch it off and retake the photo in better light.

Getting under the KB limit

Type the form's limit and the file is kept under it. Two details are worth knowing.

The pixel size does not change. A form that states pixels checks them, so this tool holds the size and lowers only the JPG quality until the file fits. If the limit is very tight for the size, the quality has to fall a long way and the picture turns blocky; the page tells you when that has happened. The cure is a larger limit if the form allows a range, or a smaller pixel size if it does not fix one.

"KB" has two readings. Some systems count 1,000 bytes to a KB and some 1,024, and forms rarely say which. For a maximum, this tool uses the stricter one: "50 KB" is treated as 50,000 bytes, so the file passes under either reading.

The result panel shows the file's actual size as soon as the picture is made, so you can see at once whether a limit is needed at all.

Mistakes that get a combined picture rejected

• Compressing twice. Each JPG save loses detail. Start from the original photo and the original signature and let the size and KB be set once, here, at the end.
• A screenshot of a signature. Screenshots carry the phone's status bar and a grey background. Use the camera photo.
• Coloured or lined paper. White only.
• A signature that fills the photo. If the strip is as tall as the photo, the form's reader sees a tiny face. Keep the signature to a strip.
• The wrong order. If the instructions show the signature under the photograph, do not put it beside.
• The wrong file type. The download is a JPG, which is what forms ask for. Renaming a PNG to .jpg does not make it one.

What happens to your files

Both pictures are opened and joined inside your browser tab. They are not uploaded, and there is nowhere on this site for them to be uploaded to. The download is a new JPG drawn from the pixels alone, so the place, time and phone model stored inside the original photos are not carried into it.