Subtitle Translator

Subtitle Translator is a native macOS app that translates subtitle files with AI while leaving the original timing completely intact. You drag in one or more SRT or VTT files, choose the languages you want, and the app produces new subtitle files where only the text changes — start and end timecodes, entry numbering and line breaks stay exactly as they were, so the translation remains perfectly in sync with the video.

Beyond raw translation, the app bundles the tools a subtitle workflow actually needs. A built-in editor lets you adjust text and nudge timing to within a tenth of a second, and you can compare original, translated or side-by-side views. Validation and QC checks flag overlapping entries, durations that are too long, reading-speed problems and missing translations before you commit to a final export. Exports come out as SRT or VTT in original, translation-only or bilingual form, and batch export with smart naming keeps large jobs organised.

It supports over 100 languages across European, Asian, Middle Eastern and African scripts, detecting the source language automatically so you only pick targets. Built with SwiftUI for Apple Silicon and Intel Macs, it offers dark mode, keyboard shortcuts and drag-and-drop. Free browser-based converters for SRT, VTT, TXT, SBV and SUB are also available for quick format swaps without installing anything.