private browser processor
Free Video Subtitle Editor - Burn Captions into MP4
Create permanent captions that remain visible on every platform. Edit timing and text, then render them directly into the video frames.
Frequently asked questions
Is the video subtitle editor free?
Yes. This tool works without an account, subscription or export paywall.
Are my files uploaded?
No. The selected media is processed inside your browser and is not uploaded to Shortsmith for processing.
Which browser should I use?
A current desktop version of Chrome or Edge provides the broadest support for browser-native video encoding. File and codec support can vary by device.
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