Why would anyone need a bigger file?
It sounds strange, but many official portals set a minimum as well as a maximum file size — for example “between 100 KB and 300 KB”. The idea is to stop people uploading tiny, low-quality pictures. But a perfectly good, sharp photo from a modern phone may still be saved as only 60 KB, and the form refuses it.
How this tool increases the size safely
First, the image is saved as a high-quality JPG (95% quality). If it is still below your target, the tool adds a standard JPEG comment segment filled with empty data. Comment segments are part of the official JPEG specification, so every program, browser and upload form reads the file normally. The pixels are not changed at all — the image looks identical, it simply occupies the exact number of kilobytes you asked for.
This is better than the common alternatives:
- Upscaling the photo changes its dimensions, which may break a “200×230 pixels” requirement and makes the picture blurry.
- Adding noise or saving at 100% quality changes the image and still does not let you choose an exact size.
If your image is already too large
If the photo is bigger than the target, the tool automatically switches to compression and brings it down to the limit — so you always get a file of the required size. For more control over compression, use reduce image size in KB.