Best CodiMD Book mode Alternatives in 2026
CodiMD Book mode is a strong option, but it is not the right fit for everyone. Below are 0 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
About CodiMD Book mode
## 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
Comparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| CodiMD Book mode (original) | — | — | Free | Display a sidebar like HackMD book mode |
CodiMD Book mode alternatives in detail
Compare CodiMD Book mode head-to-head
Direct comparisons with the extensions people weigh against it.
Explore further
Frequently asked questions
What is the best alternative to CodiMD Book mode?
Browse the directory category for comparable options.
Is there a free alternative to CodiMD Book mode?
Most options in this category are freemium, with a usable free tier for evaluation.