Create SRT/VTT subtitles manually by typing or dictating text with live timestamp capture. No automatic transcription — you provide the text. Videos never leave your device — compression and conversion run locally in your browser with FFmpeg WASM.
Content reviewed October 2026 · About Toolzum
Translate pasted SRT or VTT subtitle text into 9 languages (Spanish, French, German, Japanese, Chinese, Hindi, Portuguese, Russian, Arabic) while preserving every timestamp — AI-powered with your own API key, text never stored.
Shift subtitle timing by ±milliseconds with pasted SRT/VTT text and instant before/after comparison. Localizers fix a 2.5s broadcast delay — paste, shift, copy or download, all local.
Burn one shared SRT subtitle file permanently into a whole batch of videos with font-size and bottom/top/middle position control. Course creators hard-sub 20 lessons for platforms that ignore caption files — FFmpeg WASM, 2 free batches a day.
Dictate live with real-time browser speech recognition and interim results — meetings, lectures, notes. Capture a 30-minute talk as editable text — free to start, transcript saves unlimited.
Record voice memos straight from your microphone with live levels — interviews, notes, ideas. Capture clean audio without installing apps — local recording, unlimited saves.
There is no transcript auto-split — play the media and click Add at the current timestamp for each line (each entry defaults to current time through +3 seconds), type the text, and adjust. Or dictate: each finished phrase becomes an entry spanning 3 seconds.
SRT is the most widely supported subtitle format — it works in virtually every video player. VTT (WebVTT) supports styling and positioning. Choose SRT for maximum compatibility, VTT for web players.
Yes. After generation, you can edit the start and end timestamps for each subtitle entry. Adjust timing to match specific dialogue or scene changes in your video.
New entries default to exactly 3 seconds (current time through +3s), matching natural reading speed. Shorten single words to ~2 seconds or stretch dense text toward 6–7 seconds by editing end timestamps; Dictate mode also uses 3-second spans.
Yes. Download the SRT file and upload it directly to YouTube Studio under Subtitles. YouTube accepts both SRT and VTT formats for manual subtitle uploads.
Subtitle Translator
Translate pasted SRT or VTT subtitle text into 9 languages (Spanish, French, German, Japanese, Chinese, Hindi, Portuguese, Russian, Arabic) while preserving every timestamp — AI-powered with your own API key, text never stored.
Bulk Video Subtitle Burner
Burn one shared SRT subtitle file permanently into a whole batch of videos with font-size and bottom/top/middle position control. Course creators hard-sub 20 lessons for platforms that ignore caption files — FFmpeg WASM, 2 free batches a day.