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Subtitle Sync

Adjust subtitle timing to sync with your video. Shift all subtitles forward or backward, or scale timing for speed-adjusted videos.

Subtitle Converter

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Subtitle Extractor

How to Sync Subtitles

Subtitle Sync helps you fix timing issues in subtitle files. Whether your subtitles are too early, too late, or out of sync due to video speed changes, this tool makes it easy to adjust.

Features

  • Support for SRT and VTT subtitle formats
  • Shift all subtitles forward or backward
  • Scale timing for speed-adjusted videos
  • Fine-tune with 0.1 second precision
  • Preview changes in real-time
  • Download adjusted subtitle file

Common Use Cases

  • Fix subtitles that appear too early or late
  • Sync subtitles for different video versions
  • Adjust for videos played at 1.25x or 1.5x speed
  • Fix gradually drifting subtitles
  • Convert between SRT and VTT timing

100% Private, Client-Side Processing

Your subtitle files never leave your device. All processing happens directly in your browser. No uploads, no servers, complete privacy.

AUTO-GENERATE SUBTITLES LOCALLY

Need to generate subtitles from scratch?

VoiceWeaver for macOS uses hardware-accelerated Whisper AI to transcribe audio and video files directly on your Mac. Easily export highly accurate, perfectly synced SRT or VTT subtitles without uploading your media to the cloud.

Learn More about VoiceWeaver
BATCH PROCESSING

Working with large video files?

ShrinkFile brings professional-grade video compression to your browser. Compress 4K videos, convert between formats, and extract audio effortlessly without uploading anything to the cloud.

Learn More about ShrinkFile