Notion Syntax Highlighter Firefox

Notion Syntax Highlighter

Improves Notion's code blocks syntax highlighting + adds tons of theme options

Features & Capabilities

Improves Notion's code blocks syntax highlighting + adds tons of theme options

🖼️ 245 available themes 🔧 Improved syntax highlighting 🩹 Minor fixes for code blocks 🔓 Open source & free - you can find github repo here: https://github.com/JSerwatka/notion-syntax-highlighter

🛠️ HOW DOES IT WORK

  1. Upon installing the extension, the default theme (Gruvbox dark) will be automatically selected.
  2. To change the theme, simply click on the extension's icon and select a different theme.
  3. For convenience, only a few themes are visible in the main theme dropdown. To add more, click below the dropdown or right-click on the extension's icon and choose the "Options" menu. On the options page, select the themes you want to appear in your default list.

🔐 PRIVACY POLICY

Notion Syntax Highlighter extension does not analyze or send any user data. All the essential data needed for the extension to function, such as your selected themes and color scheme preferences, are stored locally within your browser.

🎁 SUPPORT & CONTRIBUTE

This extension requires thorough testing, so if you encounter any issues, please report them as bugs here: https://github.com/JSerwatka/notion-syntax-highlighter/issues

You can support this project by: ❤️ Rating it 🤗 Proposing changes and contributing to its development 🐛 Reporting any bugs you encounter

🐛 KNOWN ISSUES

Up-to-date issue list can be found here: https://github.com/JSerwatka/notion-syntax-highlighter#known-issues

🚀 Future Improvements

  • Resolve performance issues related to editing large code blocks
  • Add shadow and rounded borders (configurable in settings)
  • Add line numbers (configurable in settings)
  • Allow line height customization (configurable in settings)
  • Support prettier and other code formatters
  • Simplify the process of adding new themes

User Growth & Download Statistics

Manifest V3 Add-on
By:
Jakub Serwatka
Daily users:
1
Version:
0.0.10 Last updated: 2026-03-02
Version code:
6166609
Creation date:
2025-08-02
Risk:
Low risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • *.notion.so
Size:
180.36KB
URLs:
Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-20
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Jakub Serwatka
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/notion-syntax-highlighter/

Is Notion Syntax Highlighter Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Notion Syntax Highlighter requires very minimum permissions.

Risk impact analysis details
  • High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
  • Low ******* ****** ** *** ********* ******** *********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Notion Syntax Highlighter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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