About SyncMySubs

SyncMySubs is a small set of free tools for fixing subtitle files — shifting their timing, converting between SRT and VTT, correcting framerate drift, and repairing garbled characters.

It exists because the other options were frustrating. Most subtitle tools online make you upload your file to a server you know nothing about, wrap the whole thing in ads and pop-ups, or lock the useful part behind a sign-up. That always felt backwards for something as simple as nudging a timestamp.

So SyncMySubs works differently. Every tool runs entirely in your browser — your files are read and fixed on your own device and never leave it. Nothing is uploaded, nothing is stored, and there are no accounts. It works offline once the page has loaded, and it's free to use.

The site is kept running by a single unobtrusive ad below each tool, and by anyone kind enough to leave a tip. If a tool here saved you some time, that's the whole point.