- How to Pick a Compression Quality: The 10–90 Levels Compared
A side-by-side look at the nine presets (10/20/30/40/50/60/70/80/90) and the 1–99 free slider, with guidance on which level fits which scenario.
- Cropping Tips: Common Ratios and Composition Trade-offs
When to use 1:1, 4:3, 16:9, and other common ratios, plus the principles of subject, breathing room, and visual balance.
- How to Choose Between JPG / PNG / WebP / BMP / TIFF: A Complete Guide to Image Format Conversion
A comparison of the characteristics and typical use cases of the six mainstream image formats, plus how to convert losslessly with Image Converter.
- Files Never Leave Your Phone: How Local Processing Protects Your Privacy
Online conversion tools require uploads; on-device processing does not. Using Image Converter as an example, this post explains how local processing works, where the history is stored, and the data boundaries between ads and subscriptions.
- Rotate or Flip: When to Use Which
What 90° rotation, 180° rotation, horizontal flip, and vertical flip are each for, and how EXIF rotation tags affect the final result.