Images · runs in your browser
Photo & Signature Resizer (Exact Pixels and KB)
Online forms often reject a photo for being 2 KB too big or a few pixels off. Set the exact width, height and file-size range the form asks for, and download a JPG that meets it. Everything happens on your device.
Presets are starting points. Always check the exact size your form asks for.
How to use it
- Upload a clear photo or a scan of your signature on white paper.
- Set the size in pixels from the form's instructions, or start from a preset.
- Set the KB limits. Most forms give a maximum, and some also a minimum.
- Adjust the crop so your face or signature is centred, then download.
Pixels, centimetres and DPI
Some forms give sizes in centimetres or millimetres instead of pixels. To convert, multiply inches by the DPI: at 300 DPI, 1 inch (25.4 mm) is 300 pixels. A 3.5 × 4.5 cm photo is therefore about 413 × 531 pixels at 300 DPI, or 138 × 177 pixels at 100 DPI. If the form doesn't mention DPI and only gives pixels, use the pixels.
Tips for photos and signatures that get accepted
Photos
- Use a plain, light background and even lighting, with no shadows on the face.
- Keep the face roughly 70–80% of the photo height; use the crop sliders to centre it.
- Start from the highest-resolution photo you have. Shrinking is fine; enlarging looks blurry.
Signatures
- Sign with a black or dark blue pen on plain white paper, larger than you normally would.
- Photograph or scan it straight-on in good light, then crop tightly around the signature.
- Turn on black & white if the form asks for it; it also tends to make the file smaller.
Frequently Asked Questions
How does it get the file under a KB limit?
After resizing to your exact dimensions, it re-encodes the JPEG at different quality levels and keeps the highest quality that fits under your maximum. You get the best-looking image the limit allows, not just the smallest one.
The form says the photo must be between 20 KB and 50 KB. Can I set both?
Yes. Enter both a minimum and a maximum. If the image would come out too small even at high quality, increase the width and height. A larger image naturally produces a bigger file.
Why does the output have to be JPG?
Almost every application portal asks for JPG/JPEG photos and signatures, and JPEG is the only common format whose file size can be tuned precisely with a quality setting. Transparent areas are filled with white.
Which size should I choose for my form?
Use exactly what the form's instructions say: dimensions in pixels (or centimetres/mm at a given DPI) and a file size range. Presets here are only starting points. A 35×45 mm passport-style photo at 300 DPI is 413×531 pixels.
Is my photo uploaded anywhere?
No. The image is processed with your browser's canvas on your own device. You can disconnect from the internet after the page loads and it still works.