OfflineSubs

SRT generator

Create an SRT file from any video or audio. Free, no sign-up, and the file never leaves your device.

Drop your video or audio file here
or click to choose · mp4 mov webm mp3 wav m4a

Making an SRT file

An SRT file is plain text: a number, a start and end time, then the line of dialogue. Because it is plain text, every editor and every platform reads it — which is why it remains the default subtitle format two decades on.

Most SRT generators ask you to upload your media. This one does not: the recognition runs on your own hardware, so there is nothing to wait in a queue for.

FAQ

What is an SRT file?

A plain text subtitle format holding numbered cues, each with a start time, an end time and the text to display. Almost every video tool imports it.

Can I edit the generated SRT?

Yes. Each line is editable in the browser before you download, and you can delete lines or shift every timing at once.

Do you also make VTT?

Yes — SRT, VTT and TXT are all produced from the same run.

Is there a limit?

No file count or length limit. Processing speed is the only practical constraint, at roughly 0.6× realtime.