A format that fits.
Use WebVTT for HTML video captions or SRT for your editing workflow. Start with an existing text-based subtitle file.
FREE ONLINE SUBTITLE TOOLS
SRT to VTT
converter.
Turn an existing SubRip subtitle file into WebVTT for a web video player. Preview the cues and download the result, all on your device.
Made for the
finishing touches.
Your source
Drop your subtitle file here
or
.SRT or .VTT · UTF-8 · Up to 5 MB✓
Choose a file or try the sample to get started.
THE FINISHING ROOM
PREVIEWSee what you’re making.
CC / CUEFERNYOUR WORDS, IN FOCUS
Every story deserves
the right words.
the right words.
00:00:00.000SUBTITLE PREVIEW— / —
Your subtitles will appear here
Original Result
Output preview
—
A fresh format. A better rhythm. Your processed subtitles will appear here.
◉ Local processing. No subtitle uploads.One file. Three useful finishing touches.
SMALL TOOLS, CLEAR INTENTIONSFrom almost done
From almost done
to ready to share.
Right words. Right moment.
Subtitles showing up too early? Shift them later with a positive offset. A constant shift won’t fix gradually drifting timing.
Let the words breathe.
Turn captions into a readable transcript. Keep line breaks for a script, or join cues into a continuous paragraph.
A few helpful details.
Does my subtitle file leave my device?
No. Subtitle processing happens in a browser worker. This app has no subtitle upload endpoint or external fonts. The hosting service receives normal page requests, and the public site uses Cloudflare Web Analytics for page visits and performance. See the privacy policy for details.
Which formats and features are supported?
UTF-8 SRT and WebVTT files up to 5 MB. Basic cue timing and text are supported. VTT headers, notes, styles, cue identifiers and positioning settings are not preserved in exports; detected metadata is reported. Basic bold, italic and underline tags are kept. VTT-only voice and word timing tags are removed when exporting SRT. Word timing tags are shifted together with cue timing when exporting VTT. Video files, transcription, translation and batch processing are outside this version.
What happens to overlapping or negative timestamps?
Overlapping cues are reported and preserved. A shift that would make any start time negative is rejected, with no cues deleted. Invalid timestamps and end times that precede start times must be corrected before export.
Convert SRT subtitles to WebVTT
- Choose a UTF-8 .srt file up to 5 MB, paste its text, or try the sample.
- Keep WebVTT selected as the output format and select Convert subtitles.
- Review the cue preview and warnings, then download the .vtt file.
What changes in the file?
WebVTT starts with a WEBVTT header and writes milliseconds with a full stop. SRT uses numbered cues and a comma before milliseconds. CueFern changes those format details while keeping basic start times, end times, words and line breaks.
WEBVTT 00:00:01.200 --> 00:00:04.000 Every story starts with a little curiosity.
When is VTT useful?
Use WebVTT when a web video player requests a text caption track. Conversion changes the subtitle file; it does not burn captions into a video or add a caption track to a hosted video for you. Upload the converted file through your player's caption controls.
Formatting and privacy
Basic bold, italic and underline tags can be kept. Player-specific SRT extensions are not supported. Files are processed in a browser worker and are not uploaded. Keep your original file and review the result in your intended player.
Need to go the other way? Use the VTT to SRT converter, or read how SRT and VTT differ.