Subtitle Sync and FPS Converter
Shift every cue or rescale timing between 23.976, 24 and 25 FPS.
Open toolFree online subtitle tools
Repair timing, convert FPS and formats, validate structure, measure readability, or normalize encoding. Files are processed locally.
SRT and VTT Subtitle Validator
Find invalid timestamps, empty cues, overlaps, and ordering problems.
Open toolSubtitle Reading Speed Analyzer
Measure characters per second, line length, and cue duration.
Open toolSRT to VTT and VTT to SRT Converter
Convert subtitle timing syntax and structure in your browser.
Open toolSubtitle Encoding Detector and UTF-8 Converter
Detect BOMs, validate UTF-8, preview text, and export UTF-8.
Open toolNot sure which repair you need?
The practical guides explain constant offsets, FPS drift, different cuts, and encoding problems.
Read the guides →