Convert SRT to ASS or SSA
Turn a SubRip .srt file into a SubStation Alpha file with a clean default style — modern .ass, or the legacy .ssa when an older tool insists on it. Drop it below and it converts instantly in your browser.
From plain text to a styled format
SubRip (.srt) holds only plain text and timing, while Advanced SubStation Alpha (.ass) can carry fonts, colours, positioning, and effects. Converting .srt to .ass wraps your subtitles in a minimal, valid .ass file with a single default style, which you can then restyle in an editor like Aegisub. Your timing and text come across unchanged, so it is a safe starting point for adding styling later. Once it is ASS, you can also change the colour or reposition the text here without opening a separate editor.
The output selector also offers the older SubStation Alpha (.ssa) format, ASS's v4.00 predecessor with a [V4 Styles] section. Honest advice: you almost never want it — ASS does everything SSA does and more, and every modern editor expects it. Pick .ssa only when a legacy player or a pipeline built around old SSA scripts explicitly asks for one.
Wondering when ASS is worth it over plain SRT? SRT vs ASS explained →
FAQ
What styling will the .ass file have?
A single default style, white Arial with an outline. Converting from .srt can't invent styling that was never there, so it gives you a clean, valid .ass base that you can restyle in an editor like Aegisub.
Does the timing or text change?
No. Your cue timing and text are copied across exactly. Only the container format changes, from SubRip to Advanced SubStation Alpha.
Should I choose ASS or the older SSA?
Choose .ass unless something specifically demands otherwise. ASS is the newer, more capable version and is what editors like Aegisub and modern players expect. Its predecessor SSA (v4.00, with a [V4 Styles] section) only makes sense when a legacy player or pipeline explicitly asks for a .ssa file — that's why it's the non-default option here.
Is anything uploaded?
No. Everything runs locally in your browser, with no server and no account, and it works offline.
Can I batch convert multiple files at once?
Yes. Drop several .srt files together and they'll each be converted and returned in a single ZIP, all in your browser. It's the same conversion as single files, just in bulk.