Struna — free video editing, in a browser tab
Struna cuts video in a browser tab. Trim, split and reorder your clips, drop b-roll over the top, add music, subtitles and animated graphics, then export an MP4 that imports straight into DaVinci Resolve. Nothing is uploaded — your footage is read off your own machine and never reaches our servers. No watermark, ever.
Free · no sign-up · no watermark · runs in your browser
Beta, and desktop Chrome or Edge only. It reads your files locally, so a long export takes real time on a slow machine.
Drop clips on the timeline and split them where the playhead is. Drag to move, drag an edge to trim, and the timeline closes the gap itself so a cut can never leave you a black frame. B-roll gets its own lane above the video and cuts the same way.
Lay a music bed under the whole thing and fade it. Load an .srt or .vtt and the subtitles burn in — positioned, sized, and readable over busy footage. Four look dials grade the shot without turning it into a colour session.
Eleven animated presets across intros, outros, headlines, lower thirds and info boxes — text you can retype at any point, in your own colours, fonts and logo. They are drawn live on the same canvas as the video, not baked into a file you have to re-render.
A flat H.264 MP4 at 16:9, 9:16, 1:1 or 4:5, with sound. Verified importing into DaVinci Resolve — the fragmented MP4 most browser tools produce is exactly what an editor refuses, and this is not one.
THE REST OF THE SHELF
It is free to use and there is no watermark on anything you export — that is a rule here, not a trial limit. You do not need an account to edit and export. Signing in is free too, and only matters if you want to save a project to your own cloud storage.
No. Struna reads your files locally in the browser and the video never reaches our servers — there is nowhere for us to keep it. If you save a project, what is stored is a roughly one-kilobyte list of your edit decisions in your own Drive, Dropbox or OneDrive. The footage stays yours.
Desktop Chrome or Edge. It leans on WebCodecs to encode video and Safari does not support the parts it needs, so it is not supported there — we would rather say so than let you find out at the export.
It opens on an iPad, but it is built for a mouse and a keyboard and we do not call it a mobile editor. On a phone you are told to come back on a computer. A real mobile version would be an app you install, not this.
It depends far more on what is on the timeline than on how long it is. A graphics-led clip can export faster than real time; footage with b-roll over it runs slower than watching it, because every frame has to be decoded twice. Thirty seconds of intro, outro and kinetic type exported in six.
You can save a project to your own cloud and reopen it. Because the video itself is never uploaded, reopening asks you to point at your clips again — the same relink any editor does. Every cut, graphic, subtitle and look comes back with it.
More tools
Free, in your browser — no sign-up. When you're ready for the production tools — a teleprompter and a live run-of-show — there's a membership for that.
The free tools are free forever. The Starting Frame membership ($24/mo, 14-day trial) adds Just Read It (teleprompter) and Next (live run-of-show). The free tools stay free either way.