SRT to ASS Converter
/srt-to-assConvert SRT subtitle files to ASS format with proper timing, ready for fan-sub editing and styling.
Fan-sub editing and advanced styling need the ASS format's positioning and styling features. This converter upgrades SRT files to ASS with proper timing and structure, writing a v4.00+ Script Info header and a V4+ Styles section ready for Aegisub. The dialogue content is preserved exactly, and conversion happens locally on your device.
- 01Upload
- 02Configure
- 03Run
- 04Download
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Your subtitle file is converted entirely in your browser — it never leaves your device.
FAQ
Frequently asked questions
Everything you need to know about srt to ass converter.
What does the generated ASS file contain?
A minimal valid ASS file with a v4.00+ Script Info header, a V4+ Styles section with a Default style, and one Dialogue event per subtitle cue.
Can I open the result in Aegisub?
Yes. The output opens directly in Aegisub and other ASS editors so you can add karaoke, styling, or positioning on top of the converted cues.
How are multiline cues handled?
Line breaks in the original SRT text are converted to ASS backslash-N escape sequences, which is the standard way multiline dialogue is stored in ASS.
Which timestamps does it use?
SRT timestamps in hh:mm:ss,mmm are converted to ASS centisecond format (h:mm:ss.cc) with the same duration, so sync is preserved exactly.
Is my subtitle private?
Yes. The conversion runs entirely in your browser, and the file never leaves your device, which matters when working with unreleased content.
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