fixsubtitles

Online subtitle editor

Edit text and timing in a fast table — inline edits, find & replace with regex, row shifting, undo/redo. Opens SRT, VTT, ASS, SUB and TXT; exports any of them. Nothing leaves your browser.

Runs in your browser. Files never leave your device.

Drop a subtitle file to edit

or ·

SRT, VTT, ASS/SSA, SUB or TXT · edited in your browser · nothing uploaded

A real editor, not a one-shot tool

Most subtitle “editors” online are a textarea. This one is a proper table: every cue is a row you can edit in place — fix a typo, nudge a timestamp, add or remove a line — with the structure kept valid as you go. Open a file, work through it, export to whatever format you need.

Fast, even on a three-hour film

Subtitle files get big — a feature can run past 2,000 cues, a series episode batch far more. The editor virtualises the table, keeping only the visible rows in the page, so scrolling and editing stay instant on files with 5,000+ cues. There’s no upload and no server round-trip, so the only limit is your device’s memory.

Editing tools

  • Inline edits — change cue text and both timestamps directly in the row; bad timestamps are flagged as you type.
  • Add & delete — insert a cue after the selection or remove selected rows; everything renumbers automatically.
  • Shift selected — tick the rows you want and move their timing together by any number of seconds.
  • Find & replace — across the whole file, plain or regular-expression, case-sensitive or not, with $1 capture groups.
  • Undo / redo — every change is reversible (Ctrl/Cmd+Z, Ctrl/Cmd+Shift+Z).
  • Live issue count — overlaps, bad durations and empty cues are counted and the offending rows marked.
  • Export anywhere — save as SRT, VTT, ASS or TXT; the editor doubles as a converter.

Private by design

Everything happens in your browser. That matters for subtitles in particular: a file can reveal exactly what you’re watching or working on, and unreleased material shouldn’t be uploaded to a stranger’s server to fix a typo. Here it never is. Need automatic structural repair first? Run the SRT repair tool; garbled characters? The encoding fixer.

Frequently asked questions

Can it handle a full-length movie file?

Yes. The table only renders the rows you can see, so a three-hour film with 5,000+ cues opens, scrolls and edits without lag. Everything stays in your browser’s memory.

What can I edit?

Cue text and both timestamps inline, add and delete cues, select rows and shift their timing together, and find & replace across the whole file with an optional regular-expression mode. Undo and redo cover every change (Ctrl/Cmd+Z and Ctrl/Cmd+Shift+Z).

Which formats can I open and save?

Open SRT, VTT, ASS/SSA, MicroDVD SUB or plain text. Export to SRT, VTT, ASS or TXT — so the editor doubles as a converter. Times are edited in the clear HH:MM:SS,mmm form and written out in the chosen format.

How does find & replace with regex work?

Type a pattern, tick the .* box for regular expressions, and use $1, $2 in the replacement to reference capture groups. Leave it unticked for a plain text replace. The Aa box toggles case sensitivity.

Is anything uploaded?

No. The editor is entirely client-side — your file is read, edited and exported in the browser. Nothing is ever sent to a server, so even sensitive or unreleased material stays private.