How SRT to VTT Converter Works

SRT and WebVTT are both cue-based subtitle formats, but WebVTT follows rules that are friendly to browsers: it requires a WEBVTT header and uses a dot as the millisecond separator in timestamps. This converter transforms your SRT cues into valid VTT cues while keeping your subtitle text intact.

Step-by-Step

• 1) Paste your SRT: Copy the subtitle text from your .srt file and paste it into the input box.
• 2) Choose options: Decide whether to keep cue numbers (useful for debugging) or omit them (common in VTT).
• 3) Convert: The tool rewrites timestamp lines from 00:00:01,500 to 00:00:01.500 and adds the required WEBVTT header.
• 4) Copy or download: Copy the VTT output directly or download it as a .vtt file.
• 5) Use in your player: Attach the VTT file to an HTML5 video tag or your platform’s caption pipeline.

Key Features

WebVTT-compliant header

Every conversion includes the WEBVTT header at the top of the output, which is required by the WebVTT specification and expected by browsers and many media tools.

Accurate timestamp conversion

SRT uses commas for milliseconds, while VTT uses dots. The converter updates timestamps reliably and preserves the start → end structure for each cue.

Optional cue numbers

WebVTT cue identifiers are optional. If you want to keep the numeric indices from your SRT file, you can enable the option so the output remains easy to compare cue-by-cue.

Safe text preservation

Subtitle lines are preserved as written, including punctuation, multi-line cues, and common inline markup. This helps you keep timing and wording consistent with the original.

Instant copy and download

Get the converted result immediately. Copy to clipboard for quick edits, or download a ready-to-use .vtt file for your project.

Use Cases

• HTML5 video captions: Convert SRT to VTT for use with the <track> element in web video players.
• E-learning content: Prepare WebVTT subtitles for LMS platforms and training portals that prefer VTT.
• Content localization: Convert translated SRT files to VTT for multi-language caption delivery.
• Streaming and publishing: Create VTT files for workflows that ingest WebVTT for previews or distribution.
• Quality checks: Keep cue numbers to compare timing and text changes between formats during review.
• Quick fixes: Repair files that fail to load because of comma-based milliseconds or missing headers.

Whether you are shipping captions for a website, publishing course videos, or preparing subtitles for review, converting SRT to VTT is often the last step before deployment.

Optimization Tips

Validate timing consistency

If a player rejects your captions, check for overlapping cues or malformed timestamp lines. This converter normalizes the millisecond separator, but the original SRT timing logic still matters for clean playback.

Prefer UTF-8 and keep line breaks intentional

WebVTT works best with UTF-8 text. Keep multi-line cues only where you want explicit line breaks on screen. If your cues look crowded, consider splitting long sentences into two lines per cue.

Test with your target player

Some platforms support additional WebVTT settings (like alignment or position). If you rely on those, confirm they remain intact after conversion and run a quick playback test before publishing.

FAQ