Chromium coding style

Main style guides

• Chromium C++ style guide
  • Modern C++ use for allowed/banned features.
  • See also:C++ Dos and Don'ts for Chromium best-practices.
  • Blink C++ style
• Chromium Objective-C style guide
• Chromium Swift style guide
• Java style guide for Android
• Chromium Python style guide
  • Blink Python style
• GN style guide for build files.
  • See also:Writing GN templates for Chromium best-practices.
• Markdown style guide

Chromium also uses these languages to a lesser degree:

• Kernel C style for ChromiumOS firmware.
• WebIDL
• Mojo IDL for cross-process IPC
• Jinja style guide forJinja templates.
• SQLite SQL style for storage of cookies, etc.

Regardless of the language used, please keep codeinclusive for all contributors.

Web languages (JavaScript, HTML, CSS)

When working on Web-based UI features, consult theWeb Development Style Guide for the Chromium conventions used in JS/CSS/HTML files.

Internal uses of web languages, notably “layout” tests, should preferably follow these style guides, but it is not enforced.