Translate .ASS Subtitles Online
Localize richly styled ASS/SSA subtitles without losing fonts, colors, karaoke tags, or motion transforms. Upload, preview, and download fully translated tracks in minutes—no account required.
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pdf, xlsx, docx, csv, pptx, srt, vtt, ass up to 25MB
Why Choose Our ASS Translation Service
Style-Template Preservation
All \Style, \Fontname, \Border, \Shadow, \Pos, \Move, and \Fade tags stay exactly as they are—only the dialogue text is replaced, so your typesetting remains intact.
Karaoke-Timing Integrity
Accurately detects and keeps \k, \K, \kf, \ko tempo markers, so frame-by-frame karaoke timing survives translation.
Layer & Z-Order Aware
Multiple subtitle layers (Layer 0-9) keep their original stacking order, preventing overlap or mistimed rendering.
Smart Font Fallback
Identifies the character set required by the target language and suggests compatible fonts automatically—no more tofu squares or garbled glyphs.
Batch Style Injection
Select several .ass files at once and apply a single Style Template in one run, cutting repetitive manual work.
How to Translate ASS Subtitles
Step 1 – Upload Your .ASS File(s)
Upload a single file or multi-select several .ass files for batch processing (ZIP archives are not supported).
Step 2 – Choose Languages & Options
Pick from 100+ languages and optional modes such as “Keep Original Comments” or “Bilingual Lines.”
Step 3 – Free Animated Preview
A built-in ASS renderer plays the first 15 seconds with effects and lyric bounce so you can verify timing before you pay.
Step 4 – Pay As You Go
Per-character pricing, no subscriptions—pay only when the preview meets your standards.
Step 5 – Download & Publish
Download the translated .ass file and use it directly in Aegisub, FFmpeg, VLC, or any compatible player.
ASS-Exclusive Enhancements
Automatic Font Autoscale
Dynamically adjusts \fs and \fscy based on translated text length to prevent overflow.
Smart Tag Escaping
Automatically escapes backslashes that could conflict with ASS tags, avoiding script errors.
Global Stylesheet Switch
Upload a .sty or .ass stylesheet as a reference—our engine bulk-replaces style definitions to keep brand visuals consistent.
Who Uses ASS Translation?
Anime & Fansub Groups
Keep complex karaoke, rolling lyrics, and mask paths intact for BD-Rip or fan-sub releases in multiple languages.
Lyric & MV Producers
Music videos with colorful jumping lyrics stay perfectly synced after translation for worldwide distribution.
e-Sports Live Streams
Custom chat overlays, team colors, and edge-screen notices translate seamlessly and inject live into OBS.
Corporate Motion Graphics
Dynamic text effects in promos drop straight into FFmpeg or Aegisub once translated.
Best Practices for Clean ASS Translation
Keep Single-Sentence Lines
ASS has no hard character limit, but very long lines can break layout—insert \N line breaks before translation if needed.
Deduplicate Style Names
If duplicate style names exist, translated lines may reference the wrong style—clean them up first.
Use Unicode-Ready Fonts
Ensure your Style’s Fontname supports the target language, or enable “Auto Font Replacement” on upload.
Preview on a Real Player
After download, play the file in mpv, VLC, or PotPlayer to verify key-frame sync and overlays.
ASS Subtitle Translation FAQ
Will karaoke timing shift after translation?
No. We replace only the text after \k tags—timing values stay intact. If sentences become too long or short, fine-tune in Aegisub.
Can I convert the translated ASS to SRT/VTT within Doc2Lang?
Currently we output .ass only. Use Aegisub, Subtitle Edit, or another third-party tool for SRT or VTT conversion.
Do you process \ruby or \ibu tags?
Yes. Ruby/furigana parent-child layers are preserved. If the target language doesn’t need phonetic guides, you can choose to strip them.
Maximum file size or line count?
Up to 30 MB or 200 k lines per file. Split episodes or batches for larger scripts.
What about private styles inside comments?
Comment lines aren’t translated by default. Enable “Translate Comments” in Advanced Options if you want them processed.
Security & Privacy
Encrypted Transfers
All uploads and downloads use HTTPS with HSTS.
Immediate File Deletion
Delete files with one click after translation, or let the system erase them automatically after 14 days.
No Model Training on Your Data
Subtitle files are processed through the OpenAI API in real time—none are added to public training sets.
Ready to Globalize Your Styled Subtitles?
Break language and layout barriers—inject 100+ languages into your ASS subtitles in under five minutes. Upload a file now to get a free preview!