To put subtitles on YouTube, you have three main options: upload a file, use auto-sync, or type manually in YouTube Studio. Each method serves a different need, from quickly syncing a transcript to fine-tuning every line of text.
Why add subtitles to your YouTube videos?
Adding subtitles makes your videos accessible to a larger audience, including deaf or hard-of-hearing viewers and those who speak other languages. Subtitles also improve video visibility, increase watch time, and boost YouTube SEO, helping your content reach more viewers and keep them engaged.
Method 1: Upload a subtitle or closed caption file
If you already have a subtitle file from a professional service or software, uploading it is straightforward. This method gives you precise control over timing and formatting.
- Sign in to YouTube Studio and select "Subtitles" from the left menu.
- Choose the video you want to add subtitles to, then click "ADD LANGUAGE" and select your language.
- You can then select either "With timing" if your file already contains timecodes, or "Without timing" if you only have a plain transcript. Upload your file and YouTube will process it.
Method 2: Use auto-sync to match a transcript with your video
For a fast solution, paste a full transcript and let YouTube's speech recognition automatically synchronize it. This works best when you have a clean transcript of the spoken words.
- In YouTube Studio, go to "Subtitles" for your video, add a language, and click "ADD" under "Subtitles."
- Select "Auto-sync" and paste your transcript into the text box. The transcript must be in a language supported by YouTube's speech recognition and match the language spoken in the video.
- YouTube will align the text with the audio. Note that auto-sync is not recommended for videos over an hour long or those with poor audio quality.
Method 3: Type subtitles manually in YouTube Studio
When you need full control over every word and its timing, typing subtitles manually is the best choice. This method lets you adjust each line precisely.
- Select "Type manually." You can type or paste a transcript directly into the editor.
- As you add text, you can set the start and end times for each subtitle line by dragging the markers or entering timestamps. This gives you complete control over synchronization.
How to review and edit automatic captions
YouTube automatically generates captions for videos in 14 commonly spoken languages. However, these automatic captions may contain mistakes and require review for accuracy. To edit them, go to the "Subtitles" section in YouTube Studio for your video, select the language, and click the pencil icon to open the editor. You can then correct any errors in text or timing.
Best practices for readable and accurate subtitles
To ensure your subtitles are easy to read and follow, follow these verified formatting rules. Each subtitle line should contain no more than 42 characters, including spaces, for optimal readability. Aim for a reading speed of approximately 21 characters per second, with subtitles remaining on screen for a minimum of 1 second and a recommended maximum of 7 seconds. These guidelines help viewers keep up without feeling rushed or waiting too long.
How to let others help with subtitles
You can delegate subtitle work to trusted collaborators or open the task to your community. YouTube Studio includes a "Subtitle Editor" permission, allowing creators to delegate subtitle creation to others for specific videos where a video language has been set. Additionally, you can enable community contributions so viewers can submit their own subtitles. This is a great way to get help with translations or to answer the question of how to turn on subtitles for viewers who need them, by having more subtitle options available for your audience.
