About Add subtitles

Import an SRT file, style captions, and burn them into a video exported locally.

Tool facts

Processing
Runs locally in your browser. Source files are not uploaded to NanoPix for editing.
Available controls
Import SRT and edit cue timing · Font, color, stroke, and shadow · Preview and burn into export
Output
Export an MP4 with burned-in subtitles

Frequently asked questions

What can Add subtitles do?
Import an SRT file, style captions, and burn them into a video exported locally.
Are my files uploaded to your servers?
No. NanoPix runs in your browser with WebAssembly. Your video, audio, or image files stay on your device—we never receive them.
Is browser-based editing private?
Yes. Processing happens locally on your machine. Nothing is sent to NanoPix servers for encoding or storage.
Is this tool free?
Yes. NanoPix tools are free to use in a modern browser. No account is required for basic editing and export.