Stable signalNo paid features detectedMedium-risk permissions

Rajiko

Rajikoはradiko.jpのジオロケーション制限を解除するツールです！大阪、長崎、そして海外から東京、青森などのラジオをお楽しみください！

Users100KCurrent public install base

Rating4.6Store average score

Reviews182Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

Preview

Rajiko Media preview

3 assets

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Start

4.63

Latest

4.63

7-day rating change

0.00

2026年7月15日2026年7月21日

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Technical snapshot

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Version3.2026.2

ManifestV3

Size232KiB

Languages3English / 中文（中国） / 日本語

Published--

Store updated--

Last crawled--

Overview

Product summary

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radiko.jpをジオロアンロックして、日本国内そして海外からも日本各地のラジオを聴ける。

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To celebrate the reunion of Kalafina at the end of 2024, Rajiko will be continued to support Chromium based browsers.

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You could sponsor me via [Ko-fi](https://ko-fi.com/jackyzy823) ! Thank you!

Note: For Japanese or japan resident, Please don't sponsor unless you've subscribed a Radiko's premium plan(https://radiko.jp/premium)!

Reviews

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Store average score4.6Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average4.6Average computed only from synced review bodies below

Reviews with text126Synced review bodies

Total ratings / reviews182Chrome Web Store public rating/review count

Store average score: 4.6. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

4★

3★

2★

1★

minnie rowe2026年5月6日

感谢互联网，感谢开源

C O2026年4月29日

海外から聞いているのですが、再生しても途中で止まってしまうことが増えました、、、

えみぃ2026年3月30日

海外から利用していますが昨夜から急に時間がマイナスの目盛からの出発となり、一時停止などができずリロードを要求され、その先が聞けなくなります。 Firefox 149.0でも同様です。ご対応いただけると幸いです。先日直ったと投稿しましたが、また元の状態に戻りました。対応可能でしたら、よろしくお願いいたします。

坪田淳一2026年3月6日

おかげさまでWBCが聞けます！！！

蔡喬安2026年2月18日

想要聽7日內的廣播並下載,但不停顯示再生失敗,請求幫助 >__<

Oga Tin2026年2月14日

NHK以外は、録音できています。感謝です。

sophi chen2026年1月28日

アップデートありがとうございます！！私は日本のラジオ番組がとても好きで、気に入った回を何度も繰り返し聴いて、日本語のリスニング練習をしています。いつも継続的にメンテナンスやアップデートをしてくださって、本当にありがとうございます。感謝しています！

オリビアイズ2026年1月26日

1/19辺りでは正常に機能していたタイムシフトダウンロードが本日1/26には使用できなかった。一瞬、赤い背景に1の文字が書かれたアイコンが右下に表示されるが動作せずに終わっている模様。

JetJelly Kai2026年1月26日

(2026/01/27) The download portion of the extension is back to normal. Developer, thank you very much for your prompt action. (2026/01/26) The download portion of the extension seems to be not working anymore.

takesi hara2026年1月14日

昨日（1月14日）のChromeUpdateで再生できなくなりました。他のファイアーフォックスでは問題なく再生可能。追記　2026年1月17日現在。修正されたことで正常動作を確認いたしました。有難うございます。

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AI product read

Bypass radiko.jp geolocation restrictions to listen to Japanese radio from any region or overseas

radiko.jp restricts radio streaming to specific Japanese regions based on IP geolocation. Users outside their registered area (or overseas) cannot listen to stations from other regions. Rajiko solves this by using the Android authentication flow with spoofed GPS coordinates instead of IP-based location checks, allowing access to all Japanese radio stations.

User installs extension and optionally selects a Japanese region in the popup. When visiting radiko.jp, the extension automatically intercepts auth requests and injects spoofed GPS coordinates for the selected area, bypassing geo-restrictions. User can then play any station. For recording, user clicks the record button in the popup during live playback. For timeshift downloads, user navigates to a timeshift program page and clicks the download button.

Target users: Japanese radio listeners outside their registered region in Japan / Overseas Japanese radio fans who want to access radiko.jp / Users who want to record or download radiko radio content

The source code is available and well-documented with a detailed README, making analysis reliable. No server-side code needed verification. The only area of mild uncertainty is whether the timefree30 feature (which requires radiko premium login on the website) could be considered a paid feature of the extension—but since it requires radiko.jp's own premium subscription and the extension merely passes through the existing session cookie, it is properly classified as a destination_service feature, not an extension paid feature.

Monetization

No paid features detected

The extension itself is completely free and open-source (GitHub: github.com/jackyzy823/rajiko). There is no payment UI, no subscription mechanism, no Stripe or other payment platform integration, and no features gated behind payment. The 'premium' references in the code (modules/auth.js line 8: 'Auth token generated with premium radiko_session cookie can access the tf30 resource') refer to radiko.jp's own premium subscription plan for timefree30 content—a destination service feature, not an extension feature. The Ko-fi link in the popup (pages/popup.html line 70) is a voluntary donation link for the developer, not a payment requirement for extension features. The 'subscribe' and 'premium plan' keywords detected in the heuristic are from the store description mentioning Ko-fi sponsorship and radiko's premium plan, neither of which constitute paid features within the extension itself.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension's core functionality—bypassing radiko.jp geolocation restrictions to listen to live radio and download basic timeshift content—requires NO login. The extension programmatically generates random device info and auth tokens via radiko's Android auth API (auth1/auth2) without any user account (modules/auth.js lines 35-60). All 'auth' and 'token' references in the code are about radiko's API authentication flow, not user login. There is no login form, no account creation, and no sign-in UI in the extension. The only login-related mention is an optional case: to download 'timefree30' content (a radiko premium-only feature), the user must be logged into their own radiko.jp account via the website—but this is logging into the destination service, not the extension itself, and it is optional for a specific advanced feature.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：activeTab、cookies、storage、webRequest、downloads、scripting

Publisher

jackyzy823

Independent publisher

Email: [email protected]
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