Start free

Free SRT to VTT Converter

Convert SubRip (.srt) subtitle files to WebVTT (.vtt) in your browser. Required for HTML5 `<track>` elements and most modern web video players.

Drop your .srt file here

Or click to choose a file from your device. Max ~10 MB recommended.

How it works

Conversion happens entirely in your browser using JavaScript. Your file never leaves your device — no upload to our servers, no signup, no rate limits.

Pick a .srt file

Drag and drop, or click to choose. Conversion runs in JavaScript on your machine — the file never touches a server.

Auto-convert to WebVTT

We parse the SubRip cues, rewrite the timestamps with periods, and prepend the required `WEBVTT` signature. Cue text and timings are byte-identical on the output side.

Download or copy

Save the .vtt file and drop it into your HTML5 `<video>` element with a `<track>` tag, or paste it into your CMS. Works in every modern browser without polyfills.

SRT (SubRip) vs WebVTT (.vtt)

The two formats look almost identical — the differences are small but they matter for which players will accept your file.

SRT (SubRip)

1
00:00:01,200 --> 00:00:03,500
First caption line
Second caption line

2
00:00:04,000 --> 00:00:06,000
Another caption
  • Decimal separator: comma (`,`) — `00:00:01,200`.
  • Cue numbering: required, sequential, starts at 1.
  • Styling: none — plain text only. No positioning, no colors, no speaker tags.
  • Compatibility: VLC, MX Player, YouTube, Premiere, Final Cut, DaVinci Resolve, Plex.

WebVTT (.vtt)

WEBVTT

1
00:00:01.200 --> 00:00:03.500
First caption line
Second caption line

2
00:00:04.000 --> 00:00:06.000
Another caption
  • Header required: the file must start with `WEBVTT`.
  • Decimal separator: period (`.`) — `00:00:01.200`.
  • Extras: supports cue settings (position, alignment), `<v Speaker>` tags, CSS `STYLE` blocks, and `NOTE` comments.
  • Compatibility: every modern browser via the `<track>` element. Required by HTML5 video.

More free tools

Need the rest of the pipeline? these pair with format conversion.

Generate subtitles from audio, translate them, or pull the source video first.

SRT generator

Upload audio, get standards-compliant subtitles with speaker labels in 100+ languages.

Interview cleaner

Paste a transcript — strip filler words, repetitions, SRT/VTT markers. Browser-only, no upload.

Audio translator

Bilingual SRT plus parallel-text DOCX in 13 target languages. 3 minutes free.

JSON to SRT

Whisper, AssemblyAI, Deepgram, or AWS JSON output to standards-compliant SRT.

SRT shifter

Subtitles out of sync? Shift every cue’s timestamp by a fixed amount — browser-only.

SRT merger

Stitch multiple .srt files into one with sequential cue indices and continuous timestamps.

YouTube downloader

Public YouTube video to MP4 — the source step before subtitle generation.

All tools

14 free tools for every step of the audio-to-text workflow — one hub page.

Common questions

8 questions people ask about this.

01Why do I need a WebVTT file instead of SRT?+
HTML5 `<video><track src=…></video>` requires WebVTT. Most browser-native video players, YouTube embeds with custom captions, and JavaScript players like video.js and Plyr need .vtt — they won't load .srt directly. WebVTT is also required for adaptive streaming captions in HLS.
02Will my timings be preserved exactly?+
Yes — to the millisecond. We only swap the decimal separator (`,` → `.`) and prepend the `WEBVTT` header. Cue text, line breaks, and the `-->` arrow are passed through unchanged.
03Does the converted VTT include cue settings or styling?+
No. SRT has no concept of cue settings, so we emit plain timing lines. You can add `STYLE` blocks, cue settings, or `<v Speaker>` tags by hand after conversion if needed.
04Will speaker labels from my SRT survive?+
Yes — but as plain text, the same as they were in the SRT. SRT files commonly include labels like `John: Hi there` as part of the cue text. WebVTT has a richer `<v John>Hi there</v>` syntax, but this converter doesn't try to detect and rewrite labels (too many false positives). Add `<v>` tags manually if you need them.
05Does this work for very long files?+
Yes. We've tested with 8-hour conference recordings (~5,000 cues). Conversion is memory-bound, not CPU-bound, so the only practical limit is your device's RAM.
06Why not just rename the .srt to .vtt?+
It won't work. WebVTT players check for the `WEBVTT` signature on the first line and reject files without it. The timestamp separator also differs (`,` vs `.`) — most strict parsers will fail on mixed files.
07Can I go back to SRT later?+
Yes — use our [VTT to SRT converter](/tools/vtt-to-srt). The roundtrip is lossless for cue text and timings.
08Is this free, and what's the catch?+
No catch. The catch is we hope you remember us when you need to generate subtitles from audio or video — that's our paid product. Conversion is free forever.

Need subtitles in the first place?

Upload audio or video, get accurate SRT, VTT, DOCX, or PDF captions in 100+ languages. Free tier covers 30 min/month — no card.

Try transcription free