THE TOOL COLLECTION

Subtitle Tools

Edit, convert, synchronize, merge and validate SRT / WebVTT captions privately, with optional local video preview.

7 available tools Processed on your device

Find the right tool

Free. No sign-up required.

All six subtitle tools together, with exact timing, local video preview and explicit subtitle handoffs.

Edit SRT and WebVTT cues, inspect timing and preview plain-text captions over your local video.

Convert SRT and WebVTT subtitles locally, with explicit warnings for unsupported styling and metadata.

Move subtitle cues earlier or later with exact millisecond offsets and explicit zero-boundary handling.

Correct subtitle timing with a duration multiplier or source-to-target frame rate ratio.

Combine two subtitle documents or split a timeline into two files with explicit boundary rules.

Check subtitle syntax and timing, trim whitespace, sort cues and remove exact duplicates safely.