Focused processing: Using Background Blur in Thumbnails
Preserve the main subject and simplify the background so small-format text stays readable. Change one relevant variable at a time so the effect can be compared with the source.
- Preserve the original input and note its important limitations.
- Apply the smallest change that addresses the current task.
- Compare the result with the source at the intended display size.
- Record settings and uncertainty before the result is reused.
This public review document covers one bounded quality-control task. It is intended as a repeatable reference rather than a substitute for checking the source material and the final output directly.