How to use
- Drop your file(s) into the box above — or click it to browse.
- Conversion starts immediately; the tabs switch to a different output format.
- Click Download on each finished file — or Download all (.zip) for a batch. Nothing was uploaded at any point.
What is an ASS file?
ASS (Advanced SubStation Alpha) is the subtitle format of the anime fansub world and the Aegisub editor. Unlike SRT, it's a full typesetting system: fonts, colors, outlines, screen positions, rotations, karaoke timing per syllable — all encoded as override tags like {\pos(400,570)\i1\c&H00FFFF&} inside each dialogue line.
All that power is exactly what breaks portability. Hardware players, TVs, phone apps and most editing software either ignore ASS or render it wrong. SRT is the portable subset: text and timing, readable by everything with a screen.
| ASS / SSA | SRT | |
|---|---|---|
| Timing precision | Centiseconds (0.01s) | Milliseconds (0.001s) |
| Styling | Fonts, colors, outlines, positions, karaoke | <i> <b> <u> only |
| Layers | Multiple simultaneous layers | Single stream |
| Editor | Aegisub | Any text editor |
| Device support | PC players mostly | Everything |
What conversion keeps and what it throws away
The converter parses the [Events] section honoring the file's declared Format: field order (so nonstandard column layouts still parse), keeps dialogue text with commas intact, converts \N to real line breaks, and translates centisecond timing to SRT milliseconds. Every {\...} override block is stripped — positioning, colors, karaoke and drawing commands have no SRT equivalent. Lines are re-sorted chronologically, since ASS files often aren't.
When NOT to convert ASS to SRT
- Typeset anime releases — signs, songs and karaoke lose their entire visual identity as SRT. If the player supports ASS (VLC, mpv do), keep ASS.
- Files with layered simultaneous lines — ASS can stack dialogue and sign translations at different screen positions; flattened to SRT they may overlap awkwardly.
- As an editing round-trip — converting ASS → SRT → ASS destroys styling permanently; edit the original in Aegisub instead.