How do I convert TTML to ASS?

Paste your TTML into the input box. The converter runs in your browser and produces ASS instantly. Click Download to save.

Yes — no signup, no credits, no upload. Conversion happens entirely on your device.

Are timestamps preserved?

Yes. Timestamps round-trip from TTML into ASS with millisecond precision.

TTML → ASS

Convert TTML to ASS

Free in-browser converter from Timed Text Markup Language (TTML / DFXP) to Advanced SubStation Alpha (ASS / SSA). No signup, no upload — runs entirely on your device.

Paste TTML

ASS output

[Script Info]
ScriptType: v4.00+
PlayResX: 1280
PlayResY: 720

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Arial,48,&H00FFFFFF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,2,2,2,10,10,10,1

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:12.34,0:00:18.91,Default,,0,0,0,,First subtitle line
Dialogue: 0,0:00:18.92,0:00:24.50,Default,,0,0,0,,Second line

About TTML

TTML is a W3C XML standard for timed text. It supports rich styling, regions, animations and accessibility metadata, and is the format Apple Music ships synchronised lyrics in (TTML 2 with Apple's iTunesTimedText profile). It also underpins SMPTE-TT for broadcast captions and is exported by professional subtitling suites such as EZTitles, Subtitle …

Full TTML guide →

About ASS

ASS (and its predecessor SSA) was designed for typesetting-quality subtitles in the anime fansub community. Each cue can specify font, size, primary/secondary/outline/shadow colours, alignment, layer, position, and per-syllable karaoke highlighting via {\k} tags. It is the only subtitle format that can express broadcast-grade typography and complex…

Full ASS guide →

Other conversions

TTML → LRC TTML → SRT TTML → VTT