Inspect before changing
Find overlaps, duplicates, invalid timing, empty entries, long lines and encoding issues with read-only scans.
Subtitle Doctor
Inspect, repair, edit and synchronize SRT, ASS, SSA and WebVTT subtitles in one local workspace. Scan for timing and text issues, preview selected repairs, or apply offsets and two-point timing correction. Batch operations and CSV or JSON reports help with larger collections.

WHAT IT DOES
Subtitle Doctor keeps the workflow focused, from the first input to a result you can review.
Find overlaps, duplicates, invalid timing, empty entries, long lines and encoding issues with read-only scans.
Choose repairs for numbering, spacing, ordering and more. Edit cues, find and replace text, and undo session operations.
Apply offsets, two-point correction or FPS changes. Convert formats and process batches with per-file results.
LOCAL BY DESIGN
Subtitle files are processed locally, with no accounts, uploads or telemetry. Exports keep originals by default. Replacing a source requires confirmation and a backup; editing history is limited to the current session.