Is the SRT to VTT converter free?

Yes. Transcodr is free with no accounts, watermarks, or hard limits beyond your device's available memory.

Are my files uploaded to a server?

No. The conversion runs locally via ffmpeg compiled to WebAssembly, so your SRT file never leaves the browser tab.

Does the timing change?

No — every cue and timestamp is preserved; only the SRT syntax is rewritten as VTT.

How do I convert SRT to VTT?

Drop your SRT file above (or click Browse) — the output is already preset to VTT — then click Convert and download the result.

SRT → VTT · On-device · No upload

Convert SRT to VTT

Convert SRT to VTT in seconds, free and entirely in your browser. SRT (SubRip) is the plain-text subtitle format read by nearly every player; VTT (WebVTT) is the subtitle format for HTML5 video. Transcodr runs real ffmpeg compiled to WebAssembly, so your file is processed on your own device and never uploaded.

Drop files to convert

Video, audio, images, subtitles: anything ffmpeg can read. Drop them anywhere on the page or browse from disk.

Try a sample:

Session record(0)

No conversions yet

Time	From		To	Size	Δ	Duration
When you convert something, it’ll appear here. Clears on tab close — we don’t keep records.

SRT vs VTT

Property	SRT	VTT
Format	Plain text	Plain text + cues
Styling	Minimal	CSS styling
Compatibility	Almost every player	HTML5 <track>

SRT → VTT questions

Is the SRT to VTT converter free?: Yes. Transcodr is free with no accounts, watermarks, or hard limits beyond your device's available memory.
Are my files uploaded to a server?: No. The conversion runs locally via ffmpeg compiled to WebAssembly, so your SRT file never leaves the browser tab.
Does the timing change?: No — every cue and timestamp is preserved; only the SRT syntax is rewritten as VTT.
How do I convert SRT to VTT?: Drop your SRT file above (or click Browse) — the output is already preset to VTT — then click Convert and download the result.

01 / Engine

Real ffmpeg, compiled to WebAssembly.

Same library Netflix, YouTube, and basically every command-line video tool relies on, running in a Web Worker. Pipe a file in, run a command, pipe bytes back out.

02 / Privacy

Nothing leaves the tab.

No uploads, no accounts, no telemetry beyond an anonymous pageview. We couldn’t see your files if we wanted to — there’s no server in the loop.

03 / Limits

It is, after all, a tab.

Files up to a few hundred megabytes convert comfortably. Beyond that, your browser starts asking pointed questions. Use the desktop ffmpeg for 4K masters.

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