Are my subtitle files uploaded?

No. The SRT-to-WebVTT conversion runs locally in your browser and the tool does not upload your caption text.

What is the main difference between SRT and WebVTT?

Basic SRT timestamps use a comma before milliseconds. WebVTT uses a period, starts with a WEBVTT header, and supports additional browser caption features.

Can I use the converted file with MediaBlaster Player?

Yes, when the configured video and browser playback workflow can access the WebVTT file. Review the player and caption documentation for setup details.

All tools

Conversion tool

SRT to WebVTT Converter

Paste or load SRT captions, convert timestamps to WebVTT, and download the result without uploading content.

Runs locally in your browser; your inputs are not uploaded.

Available to AI agents — connect via Remote MCP or page-local WebMCP where supported.

SRT captions

Convert SRT subtitles to WebVTT safely

WebVTT is a browser-friendly caption format used with HTML video and many streaming workflows. This converter changes SRT timestamp commas to WebVTT periods, adds the required WEBVTT header, and keeps your caption cues in the browser.

Review the converted cues before publishing. Caption timing, reading speed, speaker labels, and accessibility still need human validation.

Paste SRT text or load a local subtitle file
Convert without uploading caption content
Download the result as a .vtt file
Use the VTT file with a compatible HLS, DASH, MP4, or HTML video workflow

SRT and WebVTT timestamp example

An SRT cue such as 00:00:02,500 --> 00:00:05,000 becomes 00:00:02.500 --> 00:00:05.000 in WebVTT. The visible caption text remains below the timestamp line.

WebVTT also supports cue settings and styling beyond basic SRT conversion. Add those only when your player and accessibility workflow require them.

Frequently asked questions

Your next step

Use WebVTT captions with your WordPress video library and MediaBlaster Player.

Download Free Plugin Docs

WordPress video pluginUse WebVTT captions with your MediaBlaster video library.Player documentationConfigure video sources, captions, chapters, and playback.HLS playlist testerInspect the public playlist used by your player workflow.Plugin featuresReview the free plugin capabilities and current limitations.