AI Auto-Subtitling

Generate accurate subtitles automatically in minutes using our advanced AI technology. Support for multiple languages and dialects.

AI Voice Dubbing

Transform your content with natural-sounding AI voice dubbing in English. Perfect for reaching global audiences.

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The simplest way to convert subtitle files between formats.
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Video Localization

Experience the next level of video localization with Checksub's advanced AI-powered platform

  • AI-Powered Subtitles 99% accurate subtitles in minutes with advanced AI speech recognition in 120+ languages
  • Professional Translation Neural machine translation with human-like quality, preserving timing and context
  • Natural Voice Dubbing Studio-quality AI voices in 75+ languages with natural intonation and emotion
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Supported Formats

SubRip (.srt) Conversions

Most widely used subtitle format, supported by virtually all video players and editing software.

WebVTT (.vtt) Conversions

Web-native subtitle format, ideal for HTML5 video and streaming platforms.

Learn more about VTT format

Advanced Sub Station Alpha (.ass/.ssa) Conversions

Advanced format with extensive styling options, popular in anime fansubbing.

Learn more about ASS/SSA format

MicroDVD (.sub) Conversions

Frame-based subtitle format popular in DVD ripping and home media.

Learn more about MicroDVD format

SubViewer2.0 (.sub) Conversions

Simple time-based format with basic styling support, compatible with most players.

Learn more about SubViewer format

YouTube (.sbv) Conversions

YouTube's native subtitle format, optimized for online video platforms.

Learn more about SBV format

LyRiCs (.lrc) Conversions

Synchronized lyrics format used in music players and karaoke applications.

Learn more about LRC format

CSV (.csv) Conversions

Spreadsheet format for easy editing and manipulation of subtitle timing and text.

Learn more about CSV format

Plain Text (.txt) Conversions

Simple text format without timing information, ideal for transcript-style subtitles.

Learn more about TXT format

TimedText (.xml/.ttml) Conversions

W3C standard format with rich styling and timing features, used in professional broadcasting.

Learn more about TTML format

Netflix DFXP (.dfxp) Conversions

Netflix's preferred format based on TTML, optimized for streaming platforms.

Learn more about DFXP format

SAMI (.smi) Conversions

Microsoft's legacy format with multi-language support, used in Windows Media Player.

Learn more about SAMI format

Scenarist (.scc) Conversions

Professional broadcast format used in TV and DVD production, supports CEA-608 captions.

Learn more about SCC format

Spruce STL (.stl) Conversions

EBU standard format widely used in European broadcasting and DVD authoring.

Learn more about STL format

QuickTime Text (.qt.txt) Conversions

QuickTime subtitle format used in Apple devices, supports multiple languages and timing.

Learn more about QuickTime Text format

Document Format Conversions

Convert to and from professional document formats (DOCX, PDF) for easy editing and sharing.

Learn more about DOCX format Learn more about PDF format