Edit, create and clean up SRT subtitle files.
An SRT file is a plain-text subtitle format containing a sequence of numbered blocks, each with a start and end timestamp and the subtitle text to display during that window. Over time, SRT files can end up with numbering gaps, inconsistent line breaks, or formatting issues after being edited in different tools.
This subtitle editor lets you paste or upload an .srt file, edit the raw text directly in the box, and use the Clean & Renumber button to automatically fix common issues: it renumbers every subtitle block sequentially starting from 1, trims stray whitespace from each line, and removes empty blocks left behind by previous edits.
Because SRT is a simple text format, editing it doesn't require any special video processing — this tool works entirely with JavaScript text parsing, so it's instant regardless of how long your subtitle file is, and of course nothing you paste or upload is sent to any server.
This is useful for cleaning up auto-generated subtitle files that have formatting quirks, manually correcting a translated subtitle track before uploading it to a video platform, or simply reviewing and adjusting subtitle timing and wording before publishing a video.
When you're done, click Download to save the cleaned .srt file, ready to attach to your video in any player or upload alongside your video file on platforms like YouTube.
SRT is far from the only subtitle format in use — VTT is common for web video, and ASS/SSA formats support advanced styling — but SRT remains the most broadly supported format across video players, editors and platforms, which is why it's the standard choice for most subtitle workflows.
A tidy, correctly numbered SRT file matters more than it might seem: some platforms and players will silently skip or misrender subtitle blocks with numbering gaps or malformed timestamps, so running your file through the Clean & Renumber function before final upload can prevent subtle playback issues down the line.
Beyond cleanup, this editor is also handy for quick manual translation work: paste in an existing English SRT file, translate each text line while keeping the timestamp lines untouched, and download a ready-to-use subtitle file in the new language, all without needing dedicated subtitle-authoring software installed on your computer.
Always keep a backup copy of your original SRT file before making large edits, especially if you're doing manual translation work — since this tool edits the plain text directly in your browser, closing the tab before downloading will lose unsaved changes, just as with any text editor.
Whether you're a hobbyist fan-subber, a student captioning a class project, or a professional preparing localized versions of a training video, having a dependable free plain-text editor removes one more paid-software dependency from the workflow.
In short, this editor covers the everyday SRT cleanup and light-editing tasks that would otherwise require installing a dedicated subtitle authoring application.
It's a small utility, but one that saves real time on every subtitle file you touch.
Whether you're fixing one stray line or restructuring an entire file, changes appear instantly as you type.
SRT (SubRip Subtitle) is a plain-text file format that stores subtitle text along with the start and end time each line should appear on screen.
No, this tool edits and cleans existing SRT text; it does not use speech recognition to generate new subtitles from audio.
No, renumbering only changes the sequence numbers of each block — the timestamps and text are left untouched.
Yes, since the file is shown as plain editable text, you can manually adjust any timestamp before downloading.