VTT Editor Pro – Free, open-source subtitle editor with offline support

Summary: VTT Editor Pro is a browser-based, free subtitle editor that works offline without signup, ads, or tracking. It supports VTT and SRT formats with unique color persistence, interactive waveform, drag-and-drop timeline, batch editing, and auto-save features.

What it does

It enables subtitle editing through a single HTML file using pure JavaScript, offering visual resize with tooltips, snap-to-grid alignment, undo/redo, and color regions saved directly in subtitle files.

Who it's for

Designed for YouTubers, podcasters, creators, students, and users seeking a lightweight, professional subtitle editor without cloud dependencies.

Why it matters

It solves the lack of simple, offline subtitle editors free from ads, tracking, and complex installations, providing an accessible, fully open-source tool.