What size in pixels fits in 20 KB
At 20 KB a photo has to become very small, so the tool reduces its width and height and keeps the quality clean. These are our sample photos at 20 KB:
| Photo | Result at 20 KB |
|---|---|
| iPhone, landscape | 373×279 px, 17.8 KB |
| iPhone, portrait, detailed | 245×327 px, 19.2 KB |
| 1920×1440 photo | 327×245 px, 19.3 KB |
That is about the size of a passport photo on screen, which is what most forms with a 20 KB limit expect. If your form asks for exact pixel dimensions, open Advanced options and tick “Keep the original width and height”; the tool then lowers the quality instead, which can make the picture blocky at this size.
Resize a signature to 10–20 KB
Many forms ask for a scanned signature between 10 KB and 20 KB. A clear signature photo gives the best result:
- Sign on plain white paper with a black or dark blue pen.
- Take the photo from straight above in daylight, without shadows.
- Crop it close to the signature on your phone.
- Add it here and tap 10–20 KB (signature).
A signature is mostly white space, so it compresses well and keeps a large, sharp size inside 20 KB. If the result comes out below 10 KB, the tool makes it bigger until it reaches the minimum.
Why a result is just under 20 KB
Some systems count 1 KB as 1,000 bytes and others as 1,024. To pass both, a 20 KB result is never more than 20,000 bytes. Windows shows such a file as 20 KB or less, which is within any 20 KB limit.