Subtitle Clinic
Check, shift, renumber, and convert SRT and VTT subtitle files without uploading video.
Inspect SRT or VTT subtitle timing, shift all cues by a controlled delay, optionally renumber SRT cues, and convert between the two text formats without uploading a video.
How to use this tool
Upload an accepted source file
Choose a file in one of the supported input formats. NetroDoc validates it before processing.
Choose the compatible action
Select this tool from the actions shown for your file, then start processing.
Download and review the result
Open the output and check the information, page order, readability, and file type before using it elsewhere.
What this tool does
Check, shift, renumber, and convert SRT and VTT subtitle files without uploading video.
Review invalid timestamps, overlaps, empty cues, cue order, Arabic or mixed-direction text, and any player-specific styling or metadata that may not survive rewriting.
When this output is useful
Specific workflow
Prepare subtitle text for another player, editor, or publishing workflow while keeping the original subtitle file unchanged.
Review before relying on the result
Review invalid timestamps, overlaps, empty cues, cue order, Arabic or mixed-direction text, and any player-specific styling or metadata that may not survive rewriting.
Temporary processing and review
NetroDoc processes this request in temporary working storage and returns a new download. The output can retain sensitive information from the source, so inspect and handle it with the same care as the original.
Privacy →Frequently asked questions
What should I check after using this tool?
Review invalid timestamps, overlaps, empty cues, cue order, Arabic or mixed-direction text, and any player-specific styling or metadata that may not survive rewriting.
When is this output useful?
Prepare subtitle text for another player, editor, or publishing workflow while keeping the original subtitle file unchanged.