YT Localizer vs ReTranslate.ai
A feature-by-feature comparison with a hosted YouTube metadata localization service.
| Topic | YT Localizer | ReTranslate.ai |
|---|---|---|
| Source code and logic | Source-available under the free-to-use license: public for inspection and free to run, but redistribution, modified releases, resale, and hosted access are prohibited. | Not publicly available. |
| Where it runs | Locally on your computer. | Hosted third-party service. |
| Author identity | Dmitrii Polovinkin — GitHub | Unknown. |
| YouTube channel safety | The source contains no calls to YouTube's video-deletion API or anything unrelated to localization. You create the authorization token for your own Google Cloud app, and access keys stay on your device. Details | The ReTranslate Google consent screen explicitly requests permission to see, edit, and permanently delete YouTube videos, ratings, comments, and captions. Its implementation cannot be inspected. |
| Application subscription | None. | Pro at $20/month or Max at $50/month. A free plan exists, but its limits are not enough to partially localize a single video. |
| Translation limits | No app-imposed limits. Usage is limited only by the translation provider and YouTube's daily API quota. Provider free quotas are usually enough for hundreds of translations. | 10 translations to one chosen language per day. Pro lists a “higher daily usage capacity” without specifics; Max is listed as five times Pro. |
| Bulk translation and multiple-video selection | Can translate an entire channel into as many as 50 languages in one run. | No bulk translation on the free plan. A single imported video is localized at a time by manually pasting its URL. |
| Translation speed | Localizing one video into 20 languages and uploading the results to YouTube takes around 25 seconds in one run. | One translation for one video takes at least five seconds on average, without uploading it to YouTube. |
| Translation providers | Your own full DeepL or Google Cloud Translation account. | Primarily smaller LLM models such as GPT-4o mini by default or Gemini 2.5 Flash. A model must be selected manually for each language. |
| Localization monitoring | Video-and-language-level progress with individual results and explanations for failed or skipped localizations. | Percentage-based progress without explanations when a translation fails or is not uploaded. A run may be marked partially successful while every attempted localization is listed as failed. |
| Subtitle translation | No. | Yes. |
| Channel metadata translation | No. | Yes. |
| Playlist metadata translation | No. | Yes, currently marked Beta. |