Free subtitle time shifter and sync tool

Advance or delay every subtitle cue by a precise offset, or rescale the complete timeline to correct common frame-rate mismatches. Supports SRT and WebVTT files.

What this free tool does

• Advance subtitle timing
• Delay subtitle timing
• Correct frame-rate drift
• Export retimed SRT or VTT files

Files are processed locally in your browser and are not uploaded to AutoCaptions.