OfflineSubs

An AudioSRT alternative with no watermark

AudioSRT is a capable browser tool with a full subtitle editor. The one thing its free tier keeps back is a watermark on the export. If that is what you are trying to get around, this page generates the same formats for free.

Drop your video or audio file here
or click to choose · mp4 mov webm mp3 wav m4a ogg flac
Batch: drop several files at once — they run one after another, and each one is downloadable the moment it finishes.

What AudioSRT does well

It is one of the most complete browser-based subtitle tools available. Its free tier is genuinely free: no sign-up, no file size limit, no duration limit and no cap on how many files you run. The editor is a real one — a waveform timeline, per-cue splitting and merging, font, outline, shadow and position controls, and a live preview. It can also export Premiere Pro JSON and burn subtitles into an MP4 on its paid plans, and it ships a Windows desktop app that claims 20× speed with GPU access.

Where people look for an alternative

What you get here instead

Where AudioSRT is still ahead

Its subtitle editor is more complete than ours — waveform, styling controls and live preview. Its cloud plan adds 100+ languages, speaker labels, AI summaries and translation, which we do not offer. And its desktop app is much faster than anything running in a browser. If you need any of those, stay with it.

FAQ

Is this free?

Yes, and there is no paid tier at all. There is no watermark because there is nothing to upsell.

Does it have a subtitle editor?

Yes, but a simpler one: every line is editable, you can delete lines and shift all timings at once. It does not have AudioSRT's waveform, styling controls or live preview.

Can I burn subtitles into the video?

No. We export subtitle files; burning them in happens in your editor at export time, which also keeps the text editable.

Is my file uploaded?

No. Transcription runs on your device via WebAssembly, and the tool works offline after the first model download.

What languages are supported?

English. Accuracy for other languages on a model this size is not good enough to ship, so we do not offer it yet.