About Plumely
Plumely is a video editor for short-form content — Reels, Shorts, TikTok, podcast clips, lecture recordings — that runs entirely inside your web browser. There is no app to install and, more importantly, there is no server that receives your footage. Your files are opened, edited, and exported on your own device.
Why we built it
Most “free” online video editors work by uploading your raw footage to their servers. That means your unpublished clips — client work, classroom recordings, therapy sessions, footage of your family — sit on someone else’s infrastructure, subject to their retention policies, their security, and increasingly their AI-training terms. We thought that trade was backwards. Modern browsers are powerful enough to trim, denoise, caption, and re-encode video locally, so we built an editor that does exactly that and asks for nothing in return.
The result is Plumely: fast because there’s no round-trip to a server, private because your media never leaves the machine you’re sitting at, and genuinely free to start because you don’t need an account to edit or export.
How it works, technically
All editing runs in-browser using WebAssembly and the WebCodecs API for decoding and encoding, with captions generated on-device. Your projects and imported media are stored locally through the browser’s Origin Private File System and IndexedDB — not in our cloud. If you open your browser’s network tab while you work, you’ll see zero bytes of your video going out. The only feature that ever transmits media is the optional high-accuracy caption mode, and only for the clip you explicitly choose.
- Import MP4, MOV, MKV, WebM and AVI — export a clean, watermark-free 1080×1920 MP4
- Chrome and Edge on desktop get the full experience first; Firefox, Safari and mobile roll out with automatic fallbacks
- Installable as an app — once cached, editing and captioning work fully offline
- Captions generate on-device in 10+ languages
Who it’s for
Plumely is built for people who make a lot of short video and care where it goes: solo creators and social teams, podcasters cutting clips, coaches and course-makers, and professionals in fields where footage is sensitive by default — teachers, therapists, lawyers, journalists, and real-estate agents. If you’ve ever hesitated to drag a file into an online tool because you weren’t sure what happens to it, that’s the hesitation we set out to remove.
How Plumely stays free
The core editor is free and shows no ads. Plumely is supported by an optional Premium subscription that unlocks the advanced AI and power tools — that’s the whole business model. We don’t show ads, we don’t sell data, we don’t build advertising profiles from your footage (we couldn’t, since we never receive it), and analytics, where enabled, are anonymous and product-focused. You can read the specifics in our Privacy Policy.
Frequently asked questions
Is it really private?+
Yes. Your file is opened and processed entirely in your browser, on your device. There is no upload endpoint — your footage never touches a server.
How is it free?+
The core editor is free with no account required. Because everything runs on your device, there are no servers or cloud-processing bills for us to pass on to you.
What's free vs Pro?+
The full editor is free and watermark-free — captions in 10+ languages, noise removal, music, text overlays, the timeline (trim/split/speed/fades) and manual reframe. Plumely Pro adds AI auto-reframe (face tracking), one-click batch export to every platform, animated caption styles, AI highlight detection and cloud high-accuracy captions. Either way, no ads.
What formats are supported?+
Import MP4, MOV, MKV, WebM and AVI. Export is a clean 1080×1920 MP4 (with a WebM fallback) — no conversion dance, no watermark.
Which browsers work?+
Chrome and Edge on desktop get the full experience first. Firefox, Safari and mobile are rolling out with automatic fallbacks.
Does it work offline?+
Once installed as an app, fully. The engine is cached, so you can clean and caption a recording on a plane.
Do you train AI on my files?+
No — your files never leave your device, so there's nothing for us to collect or train on.
Get in touch
Plumely is an independently built product and we read everything that comes in — feature requests, bug reports, and questions about how it handles your data. The best way to reach us is through our contact page.