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https://github.com/samuelmeuli/glance
🔎 All-in-one Quick Look plugin
https://github.com/samuelmeuli/glance
file-preview macos macos-app quick-look quicklook quicklook-plugin
Last synced: about 2 months ago
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🔎 All-in-one Quick Look plugin
- Host: GitHub
- URL: https://github.com/samuelmeuli/glance
- Owner: samuelmeuli
- License: mit
- Archived: true
- Created: 2020-03-02T10:25:52.000Z (almost 5 years ago)
- Default Branch: master
- Last Pushed: 2020-06-03T21:22:49.000Z (over 4 years ago)
- Last Synced: 2024-10-15T19:16:28.253Z (about 2 months ago)
- Topics: file-preview, macos, macos-app, quick-look, quicklook, quicklook-plugin
- Language: Swift
- Homepage:
- Size: 20.5 MB
- Stars: 959
- Watchers: 20
- Forks: 67
- Open Issues: 38
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Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
- Mac-QuickLook - glance - in-one Quick Look plugin |Source code(.cpp, .js, .json, .py, .swift, .yml and many more)、Markdown(.md, .markdown, .mdown, .mkdn, .mkd, .Rmd)、Archive(.tar, .tar.gz, .zip)、Jupyter Notebook(.ipynb)、Tab-separated values(.tab, .tsv) (Packages / Manually)
README
Glance
All-in-one Quick Look plugin
Glance provides Quick Look previews for files that macOS doesn't support out of the box.
## Supported file types
- **Source code** (with [Chroma](https://github.com/alecthomas/chroma) syntax highlighting): `.cpp`, `.js`, `.json`, `.py`, `.swift`, `.yml` and many more
- **Markdown** (rendered using [goldmark](https://github.com/yuin/goldmark)): `.md`, `.markdown`, `.mdown`, `.mkdn`, `.mkd`, `.Rmd`
- **Archive**: `.tar`, `.tar.gz`, `.zip`
- **Jupyter Notebook** (rendered using [nbtohtml](https://github.com/samuelmeuli/nbtohtml)): `.ipynb`
- **Tab-separated values** (parsed using [SwiftCSV](https://github.com/swiftcsv/SwiftCSV)): `.tab`, `.tsv`
## FAQ
**There are existing Quick Look apps for some of the supported file types. Why create another one?**
- Glance combines the features of many plugins into one and provides consistent and beautiful previews.
- Glance is fully compatible with Dark Mode.
- Some plugins still use the deprecated Quick Look Generator API and might stop working in the future.
- Glance can easily be extended to support other file types.
**Why does Glance require network permissions?**
Glance renders some previews in a `WKWebView`. All assets are stored locally and network access is disabled, but web views unfortunately still need the `com.apple.security.network.client` entitlement to function.
**Why isn't the app available on macOS 10.14 or older?**
The app uses the [new Quick Look API](https://developer.apple.com/documentation/quartz/qlpreviewingcontroller/2867936-preparepreviewoffile) that was introduced in 10.15, so it unfortunately won't work with older versions of macOS.
**Why are images in my Markdown files not loading?**
Glance blocks remote assets. Furthermore, the app only has access to the file that's being previewed. Local image files referenced from Markdown are therefore not loaded.
**Why isn't [file type] supported?**
Feel free to [open an issue](https://github.com/samuelmeuli/glance/issues/new) or [contribute](#contributing)! When opening an issue, please describe what kind of preview you'd expect for your file.
Please note that macOS doesn't allow the handling of some file types (e.g. `.plist`, `.ts` and `.xml`).
**You claim to support [file type], but previews aren't showing up.**
Please note that Glance skips previews for large files to avoid slowing down your Mac.
It's possible that your file's extension or [UTI](https://en.wikipedia.org/wiki/Uniform_Type_Identifier) isn't associated with Glance. You can easily verify this:
1. Check whether the file extension is matched to the correct class in [`PreviewVCFactory.swift`](./QLPlugin/Views/PreviewVCFactory.swift).
2. Find your file's UTI by running `mdls -name kMDItemContentType /path/to/your/file`. Check whether the UTI is listed under `QLSupportedContentTypes` in [`Info.plist`](./QLPlugin/Info.plist).
3. If an association is missing, please feel free to add it and submit a PR.
## Contributing
Suggestions and contributions are always welcome! Please discuss larger changes (e.g. adding support for a new file type) via issue before submitting a pull request.
Xcode, Swift and Go need to be installed to build the app locally.
To add previews for a new file extension, please follow these steps:
1. Create a new class for your file type in [this directory](./QLPlugin/Views/Previews/). It should implement the `Preview` protocol. See the other files in the directory for examples.
2. Match the file extension to your class in [`PreviewVCFactory.swift`](./QLPlugin/Views/PreviewVCFactory.swift).
3. Find your file's UTI by running `mdls -name kMDItemContentType /path/to/your/file`. Add it to `QLSupportedContentTypes` in [`Info.plist`](./QLPlugin/Info.plist).
4. Update [`README.md`](README.md), [`SupportedFilesWC.xib`](Glance/SupportedFilesWC.xib), the [App Store description](AppStore/Listing/Description.txt) and [`Credits.rtf`](Glance/Credits.rtf) (if you introduced a new library).