How to edit SRT subtitles

A concise guide to the SRT file layout and how to edit cue text and timings—locally or with DualSubs’ free in-browser editor.

Quick path: open the online SRT editor, load your .srt, edit lines and timings, search the file if needed, then download the result. Subtitles are processed in your browser and are not uploaded to our server.

SRT format in one minute

SRT (SubRip) is a simple text format. Cues are separated by a blank line. Each cue has:

  1. A sequence number (1, 2, 3…).
  2. A timing line: HH:MM:SS,mmm --> HH:MM:SS,mmm (milliseconds use a comma).
  3. The subtitle text—one or more lines—followed by a blank line before the next number.

Save as UTF-8 so special characters render correctly in players. For a deeper introduction, read What is SRT format and why do you need it?

Example cues

1 00:00:12,500 --> 00:00:15,080 First line 2 00:00:16,000 --> 00:00:19,200 Second line with a line break

Tools for editing SRT

  • Text editors (Notepad, Notepad++, VS Code)—fine for small fixes if you do not break timing lines or blank lines.
  • Subtitle Edit—great for long files and waveform/video sync; see How to sync subtitles with video.
  • The DualSubs online editor—no install: list of cues, edit text and timecodes, search, global shift by milliseconds, download .srt.

If your track is not SRT yet, convert subtitles to SRT first, edit, and convert again if needed.

When the online editor helps most

Handy for typos, splitting long lines, a quick global timing nudge, and text search without installing apps. For frame-accurate work against video, a desktop editor with preview is still often faster.

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Open the SRT editor in your browser

Upload, edit, and download your file.

Go to SRT editor