SSA (SubStation Alpha) is a styled subtitle format, the predecessor of ASS. SSA was created in 1996 by the SubStation Alpha subtitling tool and was later extended into ASS. SubStation Alpha was created in 1996 by a developer known as Kotus for the anime fansubbing community that needed styled, positioned captions. Unlike plain SubRip, an SSA file can set fonts, colours, outlines and on-screen positions, making it suited to elaborate typesetting. An SSA file is organised into labelled sections such as [Script Info], [V4 Styles] and [Events], with each caption line written as a comma-separated record. A .SSA file is plain text, so you can open and edit it in any text editor.

How do I open a .SSA file?

Drop a .SSA file onto Analyser at https://analyser.valjdakosta.com/ and it opens directly in your browser - no upload, no account and no software to install. Parse subtitle cues and timing from SubRip (SRT), WebVTT, ASS/SSA, MicroDVD and SubViewer (.sub): cue count, on-screen time, and a full timed cue list. MicroDVD frame timings are converted to time using the declared or assumed frame rate; binary VobSub .sub image subtitles are identified.

Can I open a .SSA file online for free?

Yes. Analyser is a free online .SSA opener and viewer that runs entirely in your browser - your .SSA file never leaves your device, so there is nothing to upload and no software to install. It even works offline once installed.

.SSA file - what it is and how to open it online

Analyse a .SSA file

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What is a .SSA file?

SSA (SubStation Alpha) is a styled subtitle format, the predecessor of ASS.

Did you know: SSA was created in 1996 by the SubStation Alpha subtitling tool and was later extended into ASS.
SubStation Alpha was created in 1996 by a developer known as Kotus for the anime fansubbing community that needed styled, positioned captions.
Unlike plain SubRip, an SSA file can set fonts, colours, outlines and on-screen positions, making it suited to elaborate typesetting.
An SSA file is organised into labelled sections such as [Script Info], [V4 Styles] and [Events], with each caption line written as a comma-separated record.
A .SSA file is plain text, so you can open and edit it in any text editor.
What Analyser shows you: Parse subtitle cues and timing from SubRip (SRT), WebVTT, ASS/SSA, MicroDVD and SubViewer (.sub): cue count, on-screen time, and a full timed cue list. MicroDVD frame timings are converted to time using the declared or assumed frame rate; binary VobSub .sub image subtitles are identified.
Open a .SSA file: Drag a .SSA file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
Related formats: .SRT · .VTT · .ASS · .SUB. See all supported file types.