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Photo Size for Forms: Passport, Visa and ID Photos in Pixels and KB
Online forms often ask for a photo in an exact size, such as 413 × 531 pixels and under 100 KB. This tool does both at once: pick a size, drop your photo, and Lytepic crops it to the exact pixels, finds the best quality that fits your KB limit, and gives you a JPG to upload. Nothing is uploaded to a server.
Pick a size to set the exact pixels, crop to fit and the file size limit. These are examples, so always follow your form’s own instructions.
Type a size and Lytepic finds the best quality that fits. Clear the box to use the quality slider instead.
The presets are examples of commonly requested sizes. Always follow the exact size and format in your form’s instructions. Lytepic resizes and compresses photos; it does not check whether a photo meets official requirements.
How to resize a photo for a form
- Pick a preset above, or type your own width, height and KB limit.
- Drop your photo into the box. “Crop to fit” is switched on, so the photo is cut from the centre to match the shape. If your face is off-centre, crop the photo in your gallery first.
- Read the status line. It shows the final size in KB and the quality used.
- Check the preview and make sure the face is fully visible and nothing important is cut off.
- Press download and upload the JPG to the form.
Common photo sizes
| Use | Size | Pixels at 300 dpi | Notes |
|---|---|---|---|
| Many passports and Schengen visas (typical) | 35 × 45 mm | 413 × 531 px | Rules differ by country |
| US passport and visa photos (typical) | 2 × 2 in (51 × 51 mm) | 600 × 600 px | Check file size and format limits |
| Square profile photo (example) | — | 500 × 500 px | Many sites accept square images |
| Small form photo (example) | — | 200 × 230 px | Often paired with a small KB limit |
| Signature (example) | — | 400 × 150 px | Dark ink on white paper |
Requirements differ by country and by application, so treat this table as a starting point and check the official guidance.
How to convert mm and cm to pixels
Forms sometimes give a size in millimetres or centimetres, but upload tools count pixels. The formula is: pixels = millimetres ÷ 25.4 × dpi. At 300 dpi, 35 mm is about 413 pixels and 45 mm is about 531 pixels. If a form gives only a physical size, 300 dpi is a common choice, but check whether it states pixels or a dpi.
| Physical size | 200 dpi | 300 dpi | 600 dpi |
|---|---|---|---|
| 35 mm | 276 px | 413 px | 827 px |
| 45 mm | 354 px | 531 px | 1,063 px |
| 2 in (51 mm) | 400 px | 600 px | 1,200 px |
File size and pixel size are different things
Pixels describe the dimensions of the photo; KB describes how heavy the file is. In this tool Lytepic sets the pixels first, then lowers the JPG quality until the file fits under your KB limit. It keeps your exact pixel size instead of shrinking the photo further. If even very low quality is too large, it tells you, and the fix is a plainer photo. For more about size limits, see how to reduce image size to 100KB, 50KB or 20KB.
Tips for passport-style photos
- Use a plain, light background. It also helps the file stay small.
- Light your face evenly, without harsh shadows.
- Face the camera straight on and centre your face in the frame.
- Skip filters and heavy editing. They add detail that costs KB and can break the rules.
- Keep your original photo and make the form version from it.
What crop to fit does
Crop to fit fills the exact size by cutting away the edges of the photo from the centre, so the picture is never stretched. If you would rather keep the whole photo, switch it off and use lock ratio, but then the size may not match exactly.
Common problems
- The file is still too big. Use a plainer background, crop tighter in your gallery first, or retake the photo in even light.
- The photo looks stretched. Turn on crop to fit instead of changing the width and height separately.
- The form asks for a DPI value. Lytepic sets pixels and does not edit DPI metadata. Many forms check only the pixel size.
- Background colour rules. Lytepic does not change backgrounds. Retake the photo against a plain wall if needed.
Frequently asked questions
What size is a passport photo in pixels?
A 35 × 45 mm photo is 413 × 531 pixels at 300 dpi, and a 2 × 2 inch photo is 600 × 600 pixels. Requirements differ by country and application, so check the official instructions.
How do I make a photo exactly 413 × 531 pixels and under 100KB?
Pick the 35 × 45 mm preset, drop in your photo and keep the limit at 100 KB. Lytepic crops to the exact pixels and lowers the quality until the file fits.
Why does my photo look stretched?
The width and height were changed without keeping the shape. Turn on crop to fit so the photo is cropped to the new shape instead of stretched.
Does Lytepic check whether my photo meets passport rules?
No. It only resizes and compresses. Rules about background, pose and lighting are separate, so check the official guidance.
Can I use this for a signature?
Yes. Photograph your signature in dark ink on white paper, pick the signature preset or enter your own size and KB limit, and download the JPG.
Is my photo uploaded to a server?
No. Everything happens in your browser, so the photo stays on your device.