Google Docs™ has a basic code block and Google Slides™ has none. Codeglaze adds real syntax highlighting to both: pick a language and a theme, preview it, and put the code in your document or slide with one click.

Everything is free – no watermark, no sign-up, no limits
• Works in both Google Docs™ and Google Slides™
• 190+ languages, plus auto-detect
• 10 themes: VS Code Dark and Light, GitHub Light and Dark, Monokai, Dracula, One Dark, Solarized Light and Dark, Nord
• Live preview before anything touches your document
• Code box with a background (a one-cell table in Google Docs™, a shape in Google Slides™), or inline highlighting for selected text in Google Docs™
• Line numbers with a start number of your choice, and an optional language label
• Indentation, blank lines, tabs and links are kept as they are
• Update a block after you edit it – it repaints in place, with no duplicates
• Remove the styling and get your original code back
• Google Docs™: highlight every ``` block in the document in one go. Codeglaze tells you how many it found before it changes anything
• Google Docs™: turn `code` in a selection into inline highlighted code, in one go, after showing you the count
• Works in the tab you have open in Google Docs™
• A choice of monospace fonts and sizes, and your last settings are remembered
• Menu shortcut: "Highlight selection (last settings)" – one click, no panel
• English and Japanese screens

Your code stays yours
• Highlighting happens inside the side panel in your browser. Your code is not sent to our servers or anywhere else.
• Codeglaze only works on the document or presentation you have open. It changes the document only when you press a button, and Ctrl+Z undoes it.
• No outside connections except anonymous usage counts (which features are used and how often) sent to Google Analytics™ – never your code, file name or email address.

How to use it
1. Select your code in the document or slide (or paste it into the panel).
2. Open Extensions > Codeglaze > Open Codeglaze.
3. Pick the language and theme, check the preview, and click Insert.

Google Docs™, Google Slides™ and Google Analytics™ are trademarks of Google LLC. Codeglaze is an independent product and is not affiliated with Google.

Codeglaze uses highlight.js (BSD-3-Clause), Copyright (c) 2006, Ivan Sagalaev. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer; redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution; neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.