Resize Photo and Signature for Exam Forms (20–50 KB)

Typical photo and signature rules (check your notification)

Every exam body publishes its own rules, and they change between years and even between posts. Use the table below to know what to expect, then confirm the exact numbers in your official notification before you upload.

Warning: These are examples, not rules. If your notification says something different, the notification wins. A rejected photo can cost you the application.

A few things are almost universal. The photo should be in colour, against a white or very light plain background, with your full face visible and eyes open. Spectacles are often discouraged because of glare. Caps and dark glasses are not allowed, though religious headwear usually is if the face is fully visible.

Step by step: resize your photo to 20–50 KB

1. Open the Image Resizer and choose or paste your photo. Phone photos, including iPhone HEIC files in Safari, work fine.
2. Pick the Exam form photo preset. You can choose it on the start screen or in the Presets tab. It sets 200 × 230 px, JPG and a 20–50 KB target in one click.
3. If your notification lists different numbers, go to Resize, choose Pixels and type the width and height. If it gives centimetres, choose cm / in and set 300 DPI. A 3.5 × 4.5 cm photo at 300 DPI works out to 413 × 531 px.
4. Open the Crop tab. The crop box already has the right shape, so just drag it over your face. Pull a corner to zoom in or out.
5. Open File size and check the range. The preset fills in Max size and Min size (optional). Change them if your form uses another range.
6. Look at the result note. It should read something like "Within 20–50 KB · quality 90%". Then press Download JPG.

The preset keeps the exact pixel size you asked for. To meet the KB range, it changes only the JPG quality and file padding, never your dimensions, unless you switch on Allow smaller dimensions.

Tip: The resizer counts the maximum in 1,000-byte KB and the minimum in 1,024-byte KB. For a 20–50 KB rule, the file lands between 20,480 and 50,000 bytes, which passes whichever way the portal counts.

Cropping your face correctly

Most rejected photos fail on framing, not file size. Aim for this:

• Head and top of shoulders. Your face should fill roughly 50–70% of the photo height. Don't crop too tight; leave a little space above your hair.
• Centred and straight. Eyes level, looking at the camera, not tilted. If the original is sideways, use Rotate & flip in the Crop tab.
• No mirror flip unless needed. Front cameras sometimes mirror the image. That's fine for a photo but matters for anything with text in it.
• Even light. Face a window rather than standing with the window behind you. Avoid shadows on the background.

If your background is cluttered or grey, you can make it white with our background remover. Choose white under Background, download as JPG, then load that file into the Image Resizer. Some forms say edited photos aren't allowed, so a real white wall is always the safer option.

When the form wants your name and date on the photo

Some notifications ask for your name and the date the photo was taken printed below your face. Our Image Resizer doesn't add text. Get the photo taken at a studio that adds it, or add the text in your phone's photo editor first. Then resize the edited photo with the preset so the text stays inside the frame.

Signature: getting a clean 10–20 KB scan

1. Sign with a black or dark blue pen on plain white paper. Use the same signature you'll use in the exam hall.
2. Photograph it in daylight, directly from above, so the paper looks evenly white with no shadow of your phone.
3. In the Image Resizer, pick the Signature preset (140 × 60 px, 10–20 KB).
4. In Crop, drag the box tightly around the signature with a small margin. A wide crop makes the signature tiny and hard to read.
5. Download the JPG and zoom in to check that every stroke is clear.

Don't sign in capital letters unless your notification allows it; several exam bodies reject them. And never use a digital or typed signature where a handwritten one is asked for.

The same method works for the left thumb impression and the handwritten declaration that bank exams often ask for. Type the pixel size and KB range from the notification into Resize and File size.

Fixing "file too large" and "file too small" errors

"File size exceeds the limit"

• Check that you downloaded the resized file, not the original from your gallery.
• Make sure Make it under a size is on in the File size tab, with the right maximum.
• If the note says the image "can't go under" the limit, your pixel size is too big for that KB limit. Check the pixels in your notification, or switch on Allow smaller dimensions if the form doesn't fix the pixel size.
• For a quick shrink without changing dimensions, the JPG compressor also works.

"File size is less than the minimum"

Small images like 140 × 60 px signatures are often only a few KB, even at high quality. Our resizer handles this in two steps when you set Min size:

1. It raises the JPG quality to add real detail.
2. If the file is still under the minimum, it adds empty metadata to reach it. The note will say how much was added, and the picture itself doesn't change.

WebP files can't be padded this way, so stick to JPG for forms.

"Invalid dimensions" or "Invalid format"

• Read the exact pixel size again. Some forms want width × height and others list height first.
• Use JPG. Rename tricks like changing .png to .jpg don't convert the file and portals may detect it.
• Avoid file names with spaces or symbols. Something like photo.jpg and signature.jpg is safest.

A quick checklist before you submit

• Pixel size matches the notification exactly.
• File size sits inside the KB range, with a little room on both sides.
• Format is JPG or JPEG.
• Face is clear, centred and recent. Your appearance should match what you'll look like at the exam centre.
• Signature is readable, not in capitals unless allowed, and matches the one you'll use on exam day.
• You uploaded the photo in the photo slot and the signature in the signature slot. Swapping them is a common mistake.

Keep the resized files in a folder on your phone. Admit cards, document verification and later forms from the same exam body often ask for the same files again.