CodiMD Book mode

Name: CodiMD Book mode
Author: 0140454

Display a sidebar like HackMD book mode

As of May 2026, CodiMD Book mode has 66 users in the Developer Tools category.

0140454 Developer Tools★ Featured

Chrome Web Store ↗.crx

Users−14.3%

Rating0%

—

— reviews

Reviews0%

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Version

1.0.0

Manifest V3

History

3 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	77	—	—	1.0.0
Apr 30, 2026	80	—	—	1.0.0
May 28, 2026	75	—	—	1.0.0
Now	66	—	—	1.0.0

Permissions & access

Permissions: webRequestdeclarativeNetRequest
Host access: <all_urls>

Screenshots

About

## Disclaimer

* This extension is NOT developed by HackMD team.
* I develop this extension for personal use.
  There may be undiscovered defects. Please think twice before use.

## Requested Permissions

* webRequest
  Read security headers related to iframe
* declarativeNetRequest
  Modify found security headers to make functionality working

## Notice

* Hostname must contains hackmd or codimd; otherwise, this extension will not enable book mode.
  In the other words, if you host CodiMD without domain name, this extension is not for you.

## How to use?

1. Install extension
2. Open your note for book index (e.g. https://codimd.your.domain/note)
3. Add `book` to query string (e.g. https://codimd.your.domain/note?book)
4. Enjoy it

## Difference between this extension and HackMD

* Links will be opened in new tab
  * HackMD
    * [target=_blank] is added explicitly
    * Starts with http (non-SSL)
  * This extension
    * [target=_blank] is added explicitly
    * Cross-origin