Photo & Signature Resizer for Exam Forms

1. 1

   Read your form's notice

   Note the pixel size (or centimetres), the minimum and maximum KB, and the file type for the photo and the signature. They differ between forms and between years.

2. 2

   Pick the closest preset

   Choose Signature, Photo or Thumb impression, then change the width, height and KB numbers to match the notice exactly.

3. 3

   Drop your image

   A phone photo of your signature on white paper works. The image is cropped to the exact shape, centred on its most detailed part, and saved as a JPG.

4. 4

   Check the result and download

   The result shows the file size, the pixel size and whether it is inside your KB range. Download it and upload it to the form.

These are typical values seen on exam and application forms, not rules. Recruiting bodies, universities and government portals each publish their own specification and change it between notices — the numbers in your form's instructions always win. Use a preset as a starting point and edit it.

• Signature: often around 140 × 60 pixels and 10–20 KB, as a JPG. Some forms give centimetres instead, such as 3.5 × 1.5 cm.
• Photograph: often around 200 × 230 pixels and 20–50 KB, as a JPG, with a plain light background.
• Thumb impression: some forms ask for a left-thumb impression, often around 240 × 240 pixels and 20–50 KB.
• Photo in centimetres: a 3.5 × 4.5 cm photo is 413 × 531 pixels at 300 dpi; check whether your form states a dpi.

Most signature rejections come from the picture, not the file size: a grey background, a shadow across the page, or a signature too small in the frame.

• Sign on plain white paper with a black or dark blue pen, a little larger than you normally would.
• Photograph it in even daylight from straight above, so the phone's shadow does not fall across the page.
• Crop close before you start if you can — the tool centres its crop on the most detailed part of the picture, usually the ink, but a tight crop leaves more of the budget for the strokes.
• Check it at 100% — a signature that is readable in the preview will be readable to the reviewer.

Forms that ask for a photo usually check it by eye as well as by size. The details differ, so read the notice, but these requests are common.

• A recent photo with the face straight to the camera, eyes open and nothing covering it.
• A plain, light background — white or light grey is what is most often asked for.
• The face filling most of the frame — crop to head and shoulders before resizing, so the tool does not have to guess.
• No filters or heavy retouching — a photo that no longer looks like you can be rejected at verification.

Some forms give a size in centimetres. A centimetre has no fixed number of pixels until you choose a resolution: pixels = centimetres ÷ 2.54 × dpi. If the form states a dpi, use it; if it states pixels, use those directly and ignore the centimetres.

• 3.5 × 4.5 cm at 200 dpi is about 276 × 354 pixels.
• 3.5 × 4.5 cm at 300 dpi is about 413 × 531 pixels.
• 3.5 × 1.5 cm at 200 dpi is about 276 × 118 pixels for a signature.
• A file's dpi tag alone changes nothing — most upload checks look at pixels and kilobytes, not at that tag.

A range like 10–20 KB has a floor as well as a ceiling, and a small, clean signature often comes out below it: a 140 × 60 JPG of dark ink on white is usually only a few kilobytes even at the highest quality. There is no more picture to add, so the tool offers the one honest fix — it can pad the JPG with an empty comment block until it reaches the minimum.

• The picture does not change — JPG files may carry comments that viewers ignore; the pixels are identical.
• It is optional — turn it off if you would rather reach the minimum with larger pixel dimensions, where your form allows that.
• It stays under the maximum — padding stops a little above the minimum and never takes the file over your upper limit.

• Passport photo resizer
• Resize image to 20KB
• Resize image to 50KB
• Resize image to 10KB
• Resize image in KB
• Resize image dimensions
• Crop image
• Compress PDF to 100KB