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Subtitle SRT Timestamp Shifter & Resync

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Shift and resynchronize SubRip (.srt) subtitle timestamps forward or backward by custom milliseconds or seconds with 1-click export.

Original SRT Subtitles

Offset (ms, positive = delay, negative = advance)

Shifted Subtitles

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Audio Production & DSP Utility Suite

Direct In-Browser Handoff

Chain this tool with complementary private browser utilities for a complete zero-server workflow:

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Helpful Examples

Delay Subtitles by 1 Second

+1000 ms offset

Offset: +1000 ms

How to Use the Subtitle SRT Timestamp Shifter & Resync

Fast, in-browser subtitle synchronizer. Shift all timestamps in an SRT subtitle file forward (delay) or backward (advance) by a fixed millisecond offset to fix audio/video sync drift. Preserves subtitle entry indices and multi-line dialog formatting.

Privacy & Data Processing Notice

No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.

Frequently Asked Questions

How do I fix subtitles that appear 1.5 seconds too early?

Set the offset to +1500 ms (or +1.5 seconds) to delay the subtitle appearance and match the spoken dialog.

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