Create, edit, and adjust SRT subtitle files online - Client-side processing, no upload
Drag & drop SRT file here, or click to select
Supports .srt format
SRT (SubRip Text) is the most common subtitle file format, consisting of sequence numbers, timestamps, and subtitle text. Almost all video players support SRT format, making it the standard for subtitle sharing.
Enter the offset in seconds in the "Time offset" field (negative to shift earlier, positive to shift later), then click "Adjust Timeline". For example, entering -2.5 will shift all subtitles 2.5 seconds earlier. Scale factor adjusts playback speed (1.0 = original).
SRT is the traditional subtitle format with the widest compatibility across all players. VTT (WebVTT) is the web standard format designed for HTML5 video, supporting more styling options (font color, position). This tool supports editing SRT and exporting to VTT.
Completely safe. All editing is done locally in your browser. Your subtitle files are never uploaded to any server. Data is cleared when you close the page.
Yes. You can batch adjust timeline offset and scale factor, and all subtitle entries will update simultaneously. Each subtitle can also be edited individually.
SRT Subtitle Editor has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.
No. SRT Subtitle Editor uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.
Yes. SRT Subtitle Editor is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
No. SRT Subtitle Editor is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.
Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.