SRT ⇄ VTT converter and timing shifter
Turn an SRT file into WebVTT or back again, and fix captions that run early or late by shifting every timing at once. Your file never leaves your browser.
Free, no sign-in, nothing to install.
Detected SRT · 2 captions
Negative moves captions earlier, positive later.
2 captions in the output.
How to use it
- 1Paste your subtitles or open an .srt or .vtt file.
- 2Pick the format you need. It defaults to the opposite of what you pasted.
- 3If the captions are out of sync, shift them: negative numbers move them earlier, positive later.
- 4Copy the result or download it as a file.
Skip the busywork with Reeltopus
Reeltopus times every word to your audio, so captions are in sync from the start, and exports them burned in or as files in 100+ languages.
The free plan includes 2 upload hours a month.
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What's the difference between SRT and VTT?+
Both list each caption with a start time, an end time and its text. SRT numbers every caption and writes milliseconds after a comma (00:00:01,000). WebVTT starts with a WEBVTT line, uses a full stop (00:00:01.000) and supports extras like positioning and speaker tags. Video editors and YouTube accept SRT; HTML5 video players use VTT.
What happens to styling when I convert?+
Italic, bold and underline tags are kept, since both formats support them. Tags only one format understands are removed: WebVTT voice and class tags when converting to SRT, and SRT font tags and {\an8}-style positioning when converting to VTT.
How do I fix subtitles that are out of sync?+
Find one line you can hear clearly and compare when it's spoken with when its caption appears. If the caption shows 1.5 seconds late, shift by −1.5. Captions that would end before the video starts are removed.
Is my file uploaded?+
No. Reading, converting and shifting all happen in your browser.
Let Reeltopus make the clips for you.
Join the waitlist for early access. The free plan includes 2 upload hours a month.