Open ZapSubs in your browser, upload a video, and add AI captions — no software to install. Free basic exports with no watermark, and no account required to start.
Online Subtitle Tool
Access our subtitle tool from any device with a web browser - no software required
Powerful cloud processing with the simplicity of a web browser
Powerful servers handle the heavy lifting while you work in your browser
Works on Windows, Mac, Linux, tablets, and phones - any device with a browser
Start on /generate without installing software — no account needed for free basic exports
Files processed in encrypted cloud environment and automatically deleted
Upload any video format and we'll add professional subtitles in seconds.
Most common video format
Apple QuickTime format
Windows video format
High-quality video container
Web-optimized format
Flash video format
Simply drag and drop your video file or click to browse. Works with any video format.
Our AI analyzes your video and generates accurate subtitles with perfect timing automatically.
Download your video with burned-in subtitles or get subtitle files for editing software.
Join thousands of users who trust our online subtitle tool for their video projects.
Start Adding Subtitles