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Improve wording around alpha optimization

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Andrew 2023-09-30 15:47:37 +13:00
parent db7f238507
commit 0d7a29ab39
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README.md
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@ -38,7 +38,7 @@ Oxipng follows Semantic Versioning.
## Usage
Oxipng is a command-line utility. Basic usage looks similar to the following:
Oxipng is a command-line utility. An example suitable for web usage may be the following:
```
oxipng -o 4 --alpha --strip safe *.png
@ -50,8 +50,8 @@ The most commonly used options are as follows:
The default (`-o 2`) is quite fast and provides good compression. Higher levels can be notably
better but generally have increasingly diminishing returns.
- Alpha: `--alpha` can improve compression of images with transparency, by altering the color
values of fully transparent pixels. This is generally recommended, unless you have a particular
need to preserve the original color values.
values of fully transparent pixels. This is generally recommended, but take care as this is
technically a lossy transformation and may be unsuitable for some specific applications.
- Strip: Used to remove metadata info from processed images. Used via `--strip [safe,all]`.
Can save a few kilobytes if you don't need the metadata. "Safe" removes only metadata that
will never affect rendering of the image. "All" removes all metadata that is not critical