
Tachi Code by David Septimus
A fully configurable lightweight code editor integrated right into your browser to supercharge your productivity!
You'll need Firefox to use this extension
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About this extension
A fully configurable lightweight code editor integrated right into your browser to supercharge your productivity!
Tachi Code automatically detects when you're viewing a raw source file and automatically open in it in a fully featured editor and integrates right into your browser's context menu, so you can edit snippets or even compare text in a flash!
Features
- Syntax highlighting for 150+ languages.
- Intellisense and validation for TypeScript, JavaScript, CSS, JSON, and YAML
- Live preview for Markdown, Mermaid, and SVG files
- Automatic source file detection
- Context menu integration
- Edit and save files to your local device
- Compare files and text snippets with a built-in diff viewer
- Fully configurable
- Choose from a growing library of themes
Tachi Code automatically detects when you're viewing a raw source file and automatically open in it in a fully featured editor and integrates right into your browser's context menu, so you can edit snippets or even compare text in a flash!
Features
- Syntax highlighting for 150+ languages.
- Intellisense and validation for TypeScript, JavaScript, CSS, JSON, and YAML
- Live preview for Markdown, Mermaid, and SVG files
- Automatic source file detection
- Context menu integration
- Edit and save files to your local device
- Compare files and text snippets with a built-in diff viewer
- Fully configurable
- Choose from a growing library of themes
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Permissions and dataLearn more
Required permissions:
- Get data from the clipboard
- Input data to the clipboard
- Block content on any page
- Access your data for all web sites
Optional permissions:
- Access your data for all web sites
More information
- Add-on Links
- Version
- 1.2.0
- Size
- 10.92 MB
- Last updated
- 20 hours ago (10 Jul 2025)
- Related Categories
- Licence
- All Rights Reserved
- Version History
- Tags
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Release notes for 1.2.0
Highlights:
- Full Mermaid diagram support with syntax highlighting for all diagram types
- Export functionality for SVG files and Mermaid diagrams as PNG/SVG
- New help commands for quick access to documentation and version information
- Enhanced language highlighting with updated token colors and improved performance
- UI improvements including better command palette layout and problem pane navigation
Fixes:
- Fixed problems pane showing no problems after closing a tab.
- Fixed custom general (non-language-specific) token customizations not being applied to the editor.
- Fixed token customizations not being applied to markdown preview codeblocks.
- Fixed an issue where Monaco's built-in Monarch tokenizer sometimes overrode our Shiki tokenizer,
resulting in sporadic incorrect syntax highlighting.
- Fixed an issue where the bracket highlighting settings were not being applied.
Read the full release notes at https://tachicode.com/whatsnew/.
- Full Mermaid diagram support with syntax highlighting for all diagram types
- Export functionality for SVG files and Mermaid diagrams as PNG/SVG
- New help commands for quick access to documentation and version information
- Enhanced language highlighting with updated token colors and improved performance
- UI improvements including better command palette layout and problem pane navigation
Fixes:
- Fixed problems pane showing no problems after closing a tab.
- Fixed custom general (non-language-specific) token customizations not being applied to the editor.
- Fixed token customizations not being applied to markdown preview codeblocks.
- Fixed an issue where Monaco's built-in Monarch tokenizer sometimes overrode our Shiki tokenizer,
resulting in sporadic incorrect syntax highlighting.
- Fixed an issue where the bracket highlighting settings were not being applied.
Read the full release notes at https://tachicode.com/whatsnew/.
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