expo-optimize v0.2.20
This library uses the natively powered package Sharp behind the scenes to optimally reduce your project's assets for use in an app or website.
š Notice: This package is not limited to Expo projects! This can be used with projects bootstrapped with community CLIs like ignite by Infinite Red, or react-native-cli by the React Native community.
š Usage
# Run this once to install the sharp image processing utility.
# If this cannot be installed on your computer then you won't be able to optimize images.
npm install -g sharp-cli
# To optimize images simply run this
npx expo-optimize <project-directory> [options]
š¤ Why?
We created optimize
to improve our docs and websites (Next, Gatsby, React), and our native apps (React & Expo). Optimizing images can noticeable improve your native app and website's TTI (or time-to-interaction) which means less time on splash screens and quicker delivery over poor network connections.
āļø Options
For more information run npx expo-optimize --help
(or -h
)
Shortcut | Flag | Input | Description | Default |
---|---|---|---|---|
-q | --quality | [number] | The quality each image will attempt to be reduced to | 80 |
-i | --include | [pattern] | Include only assets that match this glob pattern relative to the project root | expo.assetBundlePatterns: [] in the app.json |
-e | --exclude | [pattern] | Exclude all assets that match this glob pattern relative to the project root | '**/node_modules/**', '**/ios/**', '**/android/**' |
-s | --save | Save the original assets with a .orig extension | ||
-h | --help | output usage information | ||
-V | --version | output the version number |
š Further Reading
Read more about how this package works here: Image compression in Expo projects.
Related
License
The Expo source code is made available under the MIT license. Some of the dependencies are licensed differently, with the BSD license, for example.
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