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Description
How to Use Script Looper
1. Create a script by translating all subtitles
Click the Translate All with ChatGPT 🤖 / Translate All with Gemini ✨ buttons at the top of the subtitle panel to open ChatGPT/Gemini on the right and automatically generate a script where each subtitle line is paired with its translation.
For long videos, select about 5 minutes of subtitles, right‑click, and use Translate with ChatGPT / Translate with Gemini to translate in chunks.
* ChatGPT/Gemini login required (both free and paid accounts are supported)
2. Sentence‑level loop playback (Z, A/D, Space)
Click a subtitle line and press Z to highlight that sentence and loop it on YouTube.
While looping, D/A loops the next/previous subtitle, Space toggles play/pause, and pressing Z again stops the loop.
3. Explain unknown parts + loop example sentences with TTS (C)
When you need extra explanation, press Space to pause, then drag to select text. A quote button " or a popup such as “Ask ChatGPT” / “Ask Gemini” appears.
Click it to generate explanations and three example sentences. Drag an example and press C to loop it with TTS. Use D/A to move to the next/previous example, and press C again to stop. Clicking the original selected text at the top of the answer jumps back to the corresponding subtitle on YouTube.
4. Loop a range of multiple subtitles (X)
Drag to select several subtitle lines in the panel and press X to loop the entire selected range.
Press X again to stop looping that section.
5. Subtitle/audio sync adjustment (1–4, Q/W/E/R)
If subtitles and audio are out of sync while looping with Z/X/A/D, use 1/2 (start −0.1s/+0.1s), 3/4 (end −0.1s/+0.1s), Q/W (start −0.5s/+0.5s), and E/R (end −0.5s/+0.5s) to fine‑tune the loop start and end times.
6. Playback speed control (<, >)
Press < to slow down playback and > to speed it up (e.g., 0.75x, 0.5x, 1.0x, 1.25x).
🛠 Script Panel Buttons
❓ Help: Open this help panel
🤖 ChatGPT: Send all subtitles of the current video to ChatGPT and generate a script
✨ Gemini: Send all subtitles of the current video to Gemini and generate a script
📝 Blog: Open the ScriptLooper blog with recommended subtitle‑based YouTube videos
🎥 YouTube: Open the developer’s YouTube channel
❌ X: Close the script panel
SL SL: Open the script panel
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Permissions (6)
Permissions
activeTabℹ Can access the current tab when you click the extension clipboardWriteℹ Can write to your clipboard scriptingℹ Can inject scripts into web pages storageℹ Can store data locally in your browser system.display tabsℹ Can see your open tabs and their URLs
Details
| Version | 2.3.20 |
| Updated | Mar 20, 2026 |
| Size | 296KiB |
| First Seen | Mar 25, 2026 |
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