Convert Subtitle Format
Switch to your target subtitle format using the tabs to view the generated results.
Local processing · No File Upload Required
Files are processed in this browser without automatic uploads. Loading processing components for the first time may require an internet connection.
Upload subtitles to start conversion
The system automatically identifies the source subtitle type and displays available target format tabs after upload.
SRT, ASS, SSA, VTT, SBV, SUB
Subtitle conversion: uses and styling limits
Convert subtitle events and timing between SRT, ASS, SSA, VTT, SBV and SUB to suit players and editing tools.
Some subtitle formats don't support full styling, positioning, comments, or effects.
Capabilities explained
Timing and the target format
The conversion is performed based on the parsed subtitle events. Different formats use different time or frame numbering systems, so the results should be verified against the original video for synchronization.
Styling loss and editing the result
Simple formats such as SRT cannot express all styles and positioning of ASS. The page will warn of conversion losses, and the edited result should be checked in the target player.
Practical examples
Timing example: SRT to VTT
Input
1 00:00:01,000 --> 00:00:02,000 Hello
Conversion Result
WEBVTT cue-1 00:00:01.000 --> 00:00:02.000 Hello
The same cue converted from SRT to VTT retains its timing; milliseconds use a period instead of a comma.
Usage Steps
Upload Subtitles
Drag and drop or click to select subtitle files. The tool will detect the original format first.
Switch target format
Switch to your target subtitle format using the tabs to view the generated results.
Edit and Export
You can directly modify the result content if needed, then download the subtitle file in the current format.
Frequently Asked Questions
How is the original subtitle type determined?
The tool automatically detects the original format based on file extension and subtitle content, displaying the recognition result after upload.
Will my edited results be lost after switching the target format?
Switching target formats overwrites unsaved edits; cancel the confirmation to keep the current content.
What should I check if converted subtitles are out of sync?
Check source timings, the video version and frame rate for frame-based formats. Format conversion does not automatically align subtitles with audio.