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Every subtitle format serves a different purpose. Choose the right format for your project and find the perfect tools to work with it. All our tools process files in your browser — nothing is uploaded to any server.
The universal standard subtitle format. SRT files contain sequential numbered entries with timestamps and plain text captions.
The W3C standard subtitle format for HTML5 video. VTT files support CSS styling, cue positioning, and chapter markers.
The most powerful subtitle format with full styling, positioning, animation, and visual effects support for professional subtitling.
Legacy subtitle format used by MicroDVD and other DVD authoring tools. Best converted to SRT for modern compatibility.
Plain text transcript format for subtitles. Ideal for transcription, OCR output, and podcast transcripts.
Structured JSON subtitle format for developers. Ideal for software integration, automation, and data processing pipelines.
The subtitle format you choose determines where your captions can be used, how they appear, and what level of control you have over styling and positioning. SRT is the universal standard for maximum compatibility. WebVTT is required for web video and streaming platforms. ASS provides professional-grade styling and effects. Each format has specific strengths and limitations.
Use our format-specific landing pages to find the right tools for your subtitle workflow. Each page lists compatible tools, common use cases, frequently asked questions, and solutions to common problems — all organized by subtitle format.