Subtitling.net SRT Editor

Most SRT editors let you change text and timecodes. This one also tells you whether the result is actually good.

Every cue is checked in real time against professional broadcast subtitle standards: reading speed, line length, line count, duration and minimum gaps. The file gets an overall quality grade from A to F. Problems that would only appear during playback are visible before you publish or burn the subtitles into a video.

A one-click auto-fix resolves the structural problems: sorts cue order, cleans timecodes, fixes overlaps, renumbers indexes, and removes stray whitespace.

Standard editing is all there: timecode and text editing, split and merge cues, add and delete cues anywhere in the file, global time shift for sync correction, 100ms nudge with arrow keys, two editing modes (blocks view or raw SRT), and video preview for checking timing against the actual footage.

Runs entirely in your browser. Nothing is uploaded. No account, no installation, any OS. Once the page has loaded, the editor works without an internet connection.

Built by Subtitling.net, a professional subtitling company since 1986. The quality checks are based on the same broadcast subtitle guidelines used in their own production work.