Mihon Extensions 2026 – Complete Guide to Add, Install & Fix the Keiyoushi Repo

Adding the Keiyoushi repository is the first step to unlocking Mihon extensions

Open Mihon for the first time and the Browse tab looks completely empty. That is normal. Mihon extensions are not bundled with the app by default, so every reader has to add a repository manually before any manga source becomes available. This guide walks through exactly how to add the Keiyoushi repo, install the best Mihon extensions, and fix the handful of errors that trip people up.

Whether you are setting up Mihon extensions for the first time after switching from Tachiyomi, or your existing extensions stopped working after an update, every scenario is covered step by step below.

How Mihon Extensions Work

Mihon itself does not host or scrape any manga content. The app only displays what an extension fetches for it. Each extension is a small piece of code that scrapes one specific manga website and feeds the chapters back into the Mihon reader. This separation is exactly why Mihon extensions need to be added separately: the core app stays legally clean, while the community maintains the extensions that connect to actual manga sites.

Mihon displays content while each extension scrapes a different target website

This means using an extension is essentially borrowing bandwidth from a manga website without contributing back, similar to how an ad blocker works. If an extension breaks, it is usually because the target site changed something, not because Mihon itself is broken.

Apps Compatible With Mihon Extensions

Because the Keiyoushi extension format is shared across the entire ecosystem, the same repo URL works in every major Tachiyomi fork, not just Mihon itself:

If you are deciding between these forks, the full Tachiyomi forks comparison breaks down navigation style, theming, and source merging for each one.

How to Add the Keiyoushi Repository

The Keiyoushi repository is the most comprehensive and actively maintained extension source for Mihon extensions in 2026. It covers MangaDex, Toonily, Asura Scans, ComicK, and hundreds of other sources, and it is the same repo that originally powered Tachiyomi before the project shut down.

1. Open Mihon and tap More in the bottom navigation bar, then tap Settings.
2. Tap Browse, then tap Extension repos (sometimes labeled Edit repos).
3. Tap the plus icon in the top right corner to add a new repository.
4. Paste the Keiyoushi URL exactly as shown below, then tap OK to confirm:
   https://raw.githubusercontent.com/keiyoushi/extensions/repo/index.min.json
5. Go back to Browse → Extensions and tap the refresh icon. The full Keiyoushi extension catalog will load within a few seconds.

The Extension repos screen, where the Keiyoushi URL gets added

Installing Individual Mihon Extensions

Once the repository is added, the Extensions tab fills with every available source. Quality varies depending entirely on the target website, since the extension simply mirrors whatever that site provides, including its uptime and content gaps. A few things worth keeping in mind before installing:

• An extension only works if its target website is online. If the site goes down or gets blocked in your region, the extension stops functioning until the site recovers.
• The content inside an extension is identical to what the source website shows, including duplicate uploads or inconsistent chapter numbering.
• Extensions for smaller or less popular sites are maintained less frequently and break more often than extensions for large sites like MangaDex.

1. Go to Browse → Extensions and search for the manga source by name.
2. Tap the download icon next to the extension to install it.
3. Once installed, tap the shield icon to trust the extension. This step is required before any chapters will load.
4. Tap the extension again to browse and add manga directly to your library.

Best Mihon Extensions in 2026

These sources have the strongest ongoing maintenance through the Keiyoushi repo and are the most reliable starting point for new readers:

For a wider breakdown of every available source category, the dedicated Tachiyomi extensions guide covers the full Keiyoushi catalog in more depth.

Browsing Mihon Extensions by Category

The Keiyoushi catalog groups Mihon extensions loosely by content type rather than by genre, which makes the Extensions tab a little overwhelming the first time you scroll through it. Knowing which category covers what helps narrow down the search instead of installing sources at random.

Adult content sources are hidden behind a content filter by default. If a search result for an 18+ source is not appearing in the Extensions tab, the filter toggle in Settings → Browse → Show NSFW sources needs to be enabled first. This is a deliberate safety default, not a bug in the repository.

Migrating Mihon Extensions from Tachiyomi

Readers coming over from the original Tachiyomi app often assume their extensions need to be reinstalled manually one by one, but the process is actually built into the backup system. Since both apps share the identical .tachibk format and the same Keiyoushi repository, migration mostly takes care of itself.

1. Create a backup in Tachiyomi first. Open Tachiyomi, go to More → Settings → Backup → Create backup, and save the file somewhere accessible like Downloads or Google Drive.
2. Restore that backup inside Mihon. Open Mihon, go to More → Settings → Backup → Restore backup, and select the same .tachibk file. Your library, categories, and reading history come back immediately.
3. Re-add the Keiyoushi repository. The backup restores your library entries but not the repository URL itself, so the Extension repos step from earlier in this guide still needs to be done once inside Mihon.
4. Reinstall and trust each extension. Mihon will show which sources your restored library expects. Install the matching extensions from Browse and tap the shield icon on each one to trust it.

Extension Permissions and Safety Notes

Because Mihon extensions are community-built and not reviewed by any central app store, a few safety habits go a long way toward keeping your setup clean and reliable.

• Only add repositories from sources you recognize. The Keiyoushi URL listed in this guide is the official, widely trusted repository. Random repo links shared in unofficial forums or chat groups carry more risk and are far less actively maintained.
• Trust extensions individually, not automatically. The shield icon step exists specifically so each extension is reviewed before it can run, rather than every install gaining permissions silently.
• Keep extensions updated. An outdated extension is more likely to break against a changed website, and in rare cases an unmaintained extension can return broken redirect links rather than actual manga content.
• Uninstall extensions you no longer use. Fewer installed sources means a smaller surface area to troubleshoot when something in the Browse tab misbehaves.

None of this makes Mihon extensions inherently unsafe to use. The same Keiyoushi system has been the backbone of the Tachiyomi ecosystem for years across millions of installs, and Mihon itself never executes extension code outside the sandboxed scraping logic each extension is built for.

Troubleshooting Mihon Extensions

A small number of issues account for almost every problem readers run into with Mihon extensions. Work through these in order if something is not working correctly.

Mihon Extensions vs Other Repo Systems

Keiyoushi is not the only repository in the ecosystem, but it is by far the most relevant for general manga reading. Here is how it compares to the smaller alternatives:

For most readers, adding only the Keiyoushi repo covers every common source. The alternate repositories above exist mainly as supplements for edge cases.

Frequently Asked Questions