UD5 Toolkit
Online SRT Subtitle Shifter - Adjust Timing & Sync
Load an SRT file and shift all timestamps forward or backward by milliseconds or seconds. Fix out-of-sync subtitles instantly. Download corrected file.
Tag: Subtitle & Closed Caption Maker
7+ toolsVideo Subtitle Burner - Online Hardcode SRT into Video
Merge an SRT subtitle file onto a video directly in the browser. Preview and download the resulting video. All local.
SRT to WebVTT Converter - Online Subtitle Format Changer
Convert .srt subtitles to .vtt format for web video players. Preserves all timestamps and formatting. Local.
WebVTT to SRT Converter - Online Subtitle Format Swap
Convert WebVTT subtitle files to SRT and vice versa. Handles formatting conversion and encoding. No upload, pure client-side parsing.
WebVTT Subtitle Validator - Online Check Syntax
Paste a WebVTT file and instantly check for syntax errors. Validate timestamps and cue formatting. Essential for video devs.
Subtitle File Converter - Online SRT ↔ VTT & Timestamp Shift
Convert subtitle files between SRT and WebVTT formats. Also shift all timestamps forward/backward. Works locally.
SRT Subtitle Creator - Online Add Timestamps
Create .srt subtitle files manually by adding lines and setting times with a simple player. Download the result. Local.