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Aquafox Japanese Localization Pack

For PowerPC Macs (Tiger)

A language pack that adds Japanese UI support to Aquafox, the PowerPC Mac browser derived from TenFourFox. This pack is based on Firefox 45.9.0esr's official Japanese language pack and includes roughly 80 additional Aquafox-specific translations.

Don't have Aquafox itself yet? Get it from the official Aquafox download page first, then come back here for the Japanese pack.

Download ja-aquafox.xpi
Downloads so far: 129
Last updated: 2026-08-09
Note: Tiger's stock Safari/curl can't verify today's HTTPS certificates and may fail to download this directly — use a modern curl via Tigerbrew/MacPorts instead, or download Aquafox itself first, which handles this fine.

Supported Versions

Aquafox45.43.1
Base language packFirefox 45.9.0esr official ja
Verified environmentiBook G4 (PowerBook6,5) / Mac OS X 10.4.11 (Tiger)

Installation Steps

  1. Download ja-aquafox.xpi from the button above.
  2. Open the following folder in Finder (from the menu: Go → Go to Folder..., then paste the path below):
    ~/Library/Application Support/Aquafox/Profiles/
  3. Open the profile folder inside (named something like xxxxxxxx.default) and then open the extensions folder. Create it if it does not exist.
  4. Rename the downloaded ja-aquafox.xpi to langpack-ja@firefox.mozilla.org.xpi and place it in that extensions folder.
  5. Launch Aquafox, open about:config via the menu: Aquafox → Preferences → Advanced → General, then set general.useragent.locale to ja. Create it if it is missing.
  6. Restart Aquafox and the interface will appear in Japanese.

Note: place and rename the file with Aquafox completely quit. If you drop it into the extensions folder and rename it while Aquafox is running, it will not be picked up and the UI stays in English. If that happens, download ja-aquafox.xpi again, quit Aquafox, put it back in the same folder with the correct name (overwriting the old one), then launch.

Acknowledgements / License

This pack is based on the Firefox official Japanese language pack from the Mozilla Japanese L10N Community (MPL 2.0). We sincerely thank Cameron Kaiser and the developers and contributors who maintain Aquafox / TenFourFox.

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