ASS/SSA Subtitle Viewer

View and analyze Advanced SubStation Alpha (.ass/.ssa) subtitle files directly in your browser. Explore dialogue timelines, inspect styling definitions, and review raw content - all processed locally for complete privacy.

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.ASS .SSA

Advanced SubStation Alpha subtitle files

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How to View ASS/SSA Subtitle Files

  1. Upload your .ass or .ssa subtitle file using drag and drop or the file browser.
  2. Switch between Timeline, Styles, Raw, and Analysis views to explore different aspects of the file.
  3. Use the search bar to find specific dialogue lines by text content.
  4. Review style definitions in the Styles tab to understand formatting applied to subtitles.
  5. Export as plain text, SRT format, or the original ASS format.

What is the ASS/SSA Format?

The Advanced SubStation Alpha (ASS) format is a subtitle file format widely used for anime and video subtitling. It evolved from the SubStation Alpha (SSA) format and adds advanced features like rich text styling, positioning, animations, and karaoke effects. ASS files contain three main sections: Script Info (metadata), Styles (visual formatting rules), and Events (the actual dialogue lines with timing). The format is supported by popular media players like VLC, MPC-HC, and mpv, as well as encoding tools like FFmpeg and Aegisub. If you need a simpler subtitle format, consider converting to SRT or WebVTT.

ASS File Structure

Script Info

Contains metadata like title, author, script type version, video resolution (PlayResX/PlayResY), and timer multiplier.

V4+ Styles

Defines named visual styles with font, color, size, alignment, margins, and border settings. Each dialogue line references one of these styles.

Events

Contains timed dialogue lines and comments. Each event has start/end times, a style reference, actor name, margins, effects, and the text content with optional override tags.

Frequently Asked Questions

SSA (SubStation Alpha) is the original format, while ASS (Advanced SubStation Alpha) is its successor with additional features. ASS adds support for more text styles, animation effects, gradient fills, and karaoke timing. Most modern subtitle editors default to ASS. This viewer supports both formats.

Yes - use the "Export SRT" button to convert your ASS file to SRT format. This strips all ASS-specific styling and keeps only the timing and plain text. For bidirectional conversion, check our subtitle tools collection.

Override tags are inline formatting codes wrapped in curly braces like {\b1} for bold, {\i1} for italic, {\c&HFFFFFF&} for color changes, and {\pos(x,y)} for positioning. They allow per-line or per-word styling that overrides the assigned style definition.

No. All processing happens entirely in your browser using JavaScript. Your file never leaves your device - it is read locally and parsed in memory. No data is sent to any server.

Most popular media players support ASS, including VLC, MPC-HC, mpv, PotPlayer, and KMPlayer. Video editing tools like Aegisub, FFmpeg, and HandBrake can also read and embed ASS subtitles. For web playback, you may need to convert to WebVTT format.

The Styles tab displays all style definitions found in the [V4+ Styles] section. Each style card shows the font name, size, colors (primary, secondary, outline, shadow), alignment, margins, and border/shadow settings - giving you a visual overview of how subtitles will appear.