VTT · AI Document Translation
Supports document translation for PDF, Word, PPT, EPUB and more, covering 100+ languages. Preserves original formatting. Preview partial translation and pricing before deciding whether to translate the full document.
Translation and Document Processing
"Preview part of the document before translating the complete file. The preview scope depends on the document and your available account credits. If the preview requires credits, the task page will display the cost before you proceed. Layout preservation depends on the file, fonts, and text length. Complex tables, scanned pages, and text in images may require manual review. Please check the partial preview before translating the complete document."
Understand Content, Preserve Usable Document Structure
HTML5 Standard Compliance
Strictly follow the WebVTT standard, retain the `WEBVTT` file header and comments, and ensure error-free browser parsing.
Cue Settings Retention
Intelligently recognizes and preserves inline styles (such as `align:start size:50%`) to ensure that the position and alignment of subtitles on the screen remain consistent.
Context-Optimized Translation
AI models can deeply understand dialogue content by combining context, avoiding common word order errors in machine translation, and ensuring a smooth and natural reading experience.
Style Tag Support
Supports basic style tags in VTT files (such as `<b>`, `<u>`, `<c.color>`), with only text content processed during translation while tag structure is fully preserved.
Why does format matter?
- Precise formatting is the hallmark of professionalism.
- Reduce secondary formatting time.
- Ensure accurate and precise information delivery.
Core translation scenarios
Reliably meeting every translation scenario
Online Education Platform
Batch translate VTT subtitles for online course platforms, quickly adapting to format requirements of platforms like Coursera, Udemy, and others.
Enterprise Video Portal
Create multilingual VTT subtitles for internal corporate training videos to facilitate access and learning for global employees.
Web Video Development
Assists front-end developers in efficiently generating multilingual subtitle files that can be directly used with the `<track>` tag.
Translation FAQs
Preview parts of a document before translating the entire file. The preview scope depends on the document and your available account quota. If the preview requires credits, the task page will display the cost before you continue.
Translation is billed in credits based on tokens, document analysis fees, and the selected mode. OCR and higher-level models may change the cost. Review the task quote before confirming payment.
Unpaid documents are automatically deleted 15 days after task creation, and paid documents after 30 days. Please download and back up your original files and translated files before the retention period ends. You can also delete tasks from the translation history.
Translate PDF, Word, PowerPoint, Excel, EPUB, and other supported formats with file sizes up to 1GB. View the complete list of formats for the documents you want to translate.
Translate between over 100 languages. View available languages and select your target language on the document translation page.
Yes. OCR reads text from scanned PDFs and images for translation. Recognition effectiveness depends on scan quality and layout; Use enhanced recognition for pages that are difficult to identify, and check the preview to find missing or misread text.
Select a standard or higher-level model to fit your document. Review terminology, tone, and formatting in the partial preview, then select a mode for the full translation based on your needs and quote. Any preview credits will be displayed on the task page.
Your document will be processed to provide translation, including processing by the selected third-party AI provider. Please review our privacy policy for details on processing and retention.
Preview and Quote First
Preview parts of a document before translating the entire file. The preview scope depends on the document and your available account quota. If the preview requires credits, the task page will display the cost before you continue.
Upload to preview