Local · Private · Free

Subtitle Editor (SRT/VTT)

Open an .srt or .vtt file, fix the text, shift and scale the timing for framerate sync, validate overlaps, and export back. Runs entirely on your device, nothing uploaded.

Drop an .srt or .vtt file here
or click to browse

Files never leave your browser

…or paste subtitle text

Timing tools

Shift all timestamps (negative = earlier)

Scale timestamps (framerate sync)

Presets apply instantly, factor = source fps ÷ target fps (23.976 → 25 = 0.95904).

Find & replace

Find

Replace with

Match case

Validation

#StartEndDurTextActions

Times accept 00:01:02,345 or 00:01:02.345, both SRT and VTT styles.

About Subtitle Editor (SRT/VTT)

Subtitle Editor (SRT/VTT) is a free, private media tool that runs entirely in your web browser. Edit subtitles, shift and stretch timestamps, fix sync, and convert SRT to VTT (or back). Because everything happens locally on your device, your files are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. Like every free online tool by Digital Heroes, Subtitle Editor (SRT/VTT) is 100% free with no limits.

What you can do

Edit cue text directly in the table, one subtitle at a time.

Shift all timestamps forward or backward by any amount, in milliseconds or seconds.

Scale timestamps for framerate sync, with one-click presets for 23.976, 24, and 25 fps.

Find and replace text across every subtitle, with optional case-sensitive matching.

Validate your file instantly: overlapping cues, zero-duration entries, and over-length lines are flagged.

Export as .srt or .vtt, or copy the result to your clipboard, all without leaving the page.

How to use Subtitle Editor (SRT/VTT)

Open Subtitle Editor (SRT/VTT). It runs entirely in your browser, with no signup.

Drag and drop your .srt or .vtt file (or click to browse), or paste subtitle text directly. The file never leaves your device.

Edit cue text, shift or scale the timing, and use Find and Replace to fix names or wording across the whole file.

Click Download .srt or Download .vtt to save your result. Your data stays on your device.

Frequently asked questions

Is Subtitle Editor (SRT/VTT) free?

Yes. Subtitle Editor (SRT/VTT) is completely free for everyone. No sign-up, no account, and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Subtitle Editor (SRT/VTT) runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. This tool is a Progressive Web App. Once the page has loaded, it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Subtitle Editor (SRT/VTT) do?

It lets you edit subtitle text, shift and scale timestamps for framerate sync, fix overlaps, find and replace across all cues, and convert SRT to VTT (or back), all locally in your browser.