Overview
Subtitle Timeline Editor is an easy and free online tool that runs in your browser.
Your browser may not support this video codec. Prefer MP4 (H.264/AAC) or WebM.
Editor
- All files stay on your device. No uploads.
- Most compatible: MP4 (H.264/AAC) and WebM. Others may fail.
- Shortcuts: ←/→ seek 1s, Shift+←/→ seek 0.1s, Space play/pause.
Subtitle Timeline Editor
Free online SRT/WebVTT subtitle editor with video preview. Shift, stretch, split/merge, validate, and export — all offline in your browser.
Video Tools
How people use it
This browser-based tool is designed to be fast, easy to use, and private by default. Open the tool, adjust the settings, and get results instantly without creating an account or sending files to a server.
Everything runs locally in the browser whenever possible, which reduces friction for users and makes the page more useful as a direct-answer landing page from search.
Common topics
The following topics are closely related to this tool and help explain what it is for:
- subtitle
- SRT
- WebVTT
- timeline
- video
- online
- free
Quick answers
What subtitle formats are supported?
This editor supports SRT and WebVTT (VTT). You can import, edit the timeline, and export as SRT or VTT.
How do I fix subtitles that are early/late?
Use the shift buttons (±0.5s) to move the whole timeline. For drift, use Stretch to scale timestamps across the file.
What is the difference between SRT and VTT time format?
SRT typically uses commas for milliseconds (00:00:01,500) while WebVTT uses dots (00:00:01.500) and can include cue settings.