Resize or compress an image to 20 KB
An image compressor for 20 KB limits. Reduce a photo or signature to under 20 KB for an online form without it turning blocky. Free, and nothing is uploaded.
An image compressor for 20 KB limits. Reduce a photo or signature to under 20 KB for an online form without it turning blocky. Free, and nothing is uploaded.
To compress a photo to 20 KB, SafeResize saves it as a JPG of 20,000 bytes or less, which is under 20 KB whether a website counts 1 KB as 1,000 or 1,024 bytes.
| 20 KB in bytes | 20,000 bytes, or 20,480 bytes when 1 KB is counted as 1,024 bytes, as Windows does |
|---|---|
| 20 KB in MB | 0.02 MB, or 0.0195 MB as Windows counts |
| The photo you download | 20,000 bytes or less, so both counts accept it. Windows shows it as 19.5 KB or less. |
| Width and height | Up to 3200 pixels on the long side. They stay the same while the JPG quality can stay at 55% or more. Below that, the photo is made smaller so it does not turn blocky. |
| Official photo rules on SafeResize with 20 KB | As the smallest file: Japan Passport. |
Form says 20 KB to 50 KB? Use the 20 KB to 50 KB page. This page makes files under 20 KB.
20 KB is one of the smallest limits you will meet, usually for signatures and small applicant photos on exam and job forms. At 20 KB a photo has to be small in pixels as well as in file size.
The tool below opens with 20 KB chosen. SafeResize makes the picture a little smaller in pixels when needed, instead of letting it turn blocky.
A 12 megapixel phone photo has 12 million pixels. 20 KB is only 20,000 bytes, about one byte for every 600 pixels. Lowering the quality alone cannot do that without blocks, so SafeResize lowers the quality first and, when the picture would turn blocky, makes it smaller in pixels too.
A 20 KB number can also be a minimum. On SafeResize, the Japan Passport photo must be 20 KB to 600 KB, so a photo that is too small is the problem there. For that, open "More options" and fill in "Must be at least".
It will be small, but it should look clean at the size forms show it. SafeResize lowers the pixel size rather than squeezing the quality too far.
Open "More options" and fill in "Must be at least". If the photo comes out smaller, SafeResize adds a hidden note to the file to reach the minimum. The picture itself does not change.
JPG. It is accepted almost everywhere and makes far smaller files than PNG.