Is this tool completely free?

Yes, this tool is 100% free to use with no hidden costs, trials, or subscriptions required.

Do I need to register or sign up?

No registration or sign-up required. Simply use the tool directly in your browser.

Is my data uploaded to a server?

No, all processing happens locally in your browser. Your data never leaves your device, ensuring complete privacy.

Can I use this tool offline?

Yes, once loaded, many features work offline thanks to Progressive Web App technology.

Subtitle Timeline Editor – Free Online Tool

Video (MP4/H.264 or WebM):

Subtitle (SRT or VTT):

Stretch

Editor

Start

End

Text

All files stay on your device. No uploads.
Most compatible: MP4 (H.264/AAC) and WebM. Others may fail.
Shortcuts: ←/→ seek 1s, Shift+←/→ seek 0.1s, Space play/pause.

Subtitle Timeline Editor

Free online SRT/WebVTT subtitle editor with video preview. Shift, stretch, split/merge, validate, and export — all offline in your browser. Enjoy fast, no-signup, browser-based results with offline-friendly processing. Free online tool - No registration, no upload, works offline. Easy to use on any device.

srt_parse_edit_export
webvtt_parse_edit_export
timeline_shift_stretch
split_merge_cues
video_preview
offline_ready
drag_drop_clipboard

Category: Video Tools | Language: en | Free online tool - No registration required