Free online SRT subtitle merger

Combine two SRT files into one subtitle track, optionally offset the second file, sort all valid cues by start time, preserve overlaps, and renumber the output.

What this free tool does

• Merge two SRT files
• Optional second-file timing offset
• Time-sorted cue output
• Automatic sequential renumbering

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