How Tomconverter reduces an image
Each picture is handled on its own. A result under the limit is a success. The file is not padded up to the limit, and it is not reduced further once it fits.
- If the file is already under the limit, it is copied. Nothing is recompressed.
- Larger files are turned upright from their camera data, then saved as JPEG without that extra data.
- Transparency is placed on white, because the result is a JPEG.
- The highest JPEG quality that still fits is kept, searching from fine to coarse.
- If even a coarse JPEG is too big, the long edge is shortened by about a tenth and the search repeats. It stops near 640 pixels unless the picture was already smaller.
- If that floor is still over the limit, the smallest attempt is saved and marked over the limit.
200 KB means 204,800 bytes. The limit can be set from 32 KB to 10240 KB.
On this website the reduction runs in your browser. The pictures stay on your computer and are not saved on the server. You save the results from the page. The Windows program uses the same steps and can open a TIFF file when the browser cannot.
Files that can be opened
JPG, JPEG, PNG, WebP, BMP, TIF, and TIFF. Other files in a folder are left out. The result is a JPEG. The file name keeps the original name and adds the limit, ending in _200kb.jpg when the limit is 200 KB.