Reducing a photo to 200 KB or 100 KB sounds simple, but file size depends on much more than one quality setting. Dimensions, texture, colors and the chosen format all influence the result.
What does 75% quality mean?
A quality setting of 75 does not promise a 75% reduction in file size. It controls the encoder, and two different photos can produce dramatically different outputs at the same setting. Browsers can also vary in their encoding implementations.
When should you choose a target size?
If an application form requires a maximum of 200 KB, choose a target-size mode. The converter can search for a suitable encoding and, if necessary, reduce dimensions. Extremely small limits can damage small text, faces and fine details.
Pick a suitable format
JPG is widely accepted for photographs. WebP often saves space but is not supported by every upload form. PNG preserves sharp graphics and transparency but may produce larger photo files.
Review the result
- Check actual file size, not the selected quality percentage.
- Zoom in to inspect text and facial details.
- Confirm that the receiving site accepts the output type.
- Keep the original file in case you need to retry.
The goal is not simply to produce the smallest file; it is to meet a practical limit while retaining useful image detail.