Checksub

Generates accurate captions with AI, then lets you apply dozens of style presets and animations, including one-click karaoke effects, before exporting burned-in video or subtitle files.

Machine translation built specifically for subtitles, so line lengths and timing stay readable instead of copying a generic document translator.

Separates music and background noise from the original voices, then replaces only the speech with realistic AI dubbing so the audio atmosphere is preserved.

Clone a speaker's voice from a sample and use it to replace the original voice-over across dozens of languages with a natural delivery.

Edit, re-time and regenerate any subtitle line or dubbed sentence directly in the browser, with script-to-subtitle alignment for pre-written content.