Your hardware
does the work
Every heavy tool on this site — the AI background remover, the video studio, the PDF/image/audio tools — runs on your own device, inside your browser. No servers. No uploads. Our cost per use is ~zero, so yours is exactly zero: no caps, no watermark, no account.
The tech that makes $0 possible
WebGPU
The browser can now talk to your graphics card. That's what runs the AI models — background removal happens on the same silicon a paid service would rent from a datacenter, except it's yours and it's free.
WebCodecs
Direct access to your device's native video encoder/decoder — the same hardware CapCut uses. Our video studio exports MP4s at near-native speed with zero server involvement.
WebAssembly
Full desktop-class software (FFmpeg, PDF engines, MP3 encoders) compiled to run inside the browser sandbox. The universal fallback when the newer APIs aren't available.
Open AI models
MIT/Apache-licensed models (BiRefNet, MODNet — credited below) served from Hugging Face's CDN, cached by your browser. We host nothing, you download once, it's yours.
🔍 Don't trust us — check
- Open any tool, then open your browser's dev tools (F12) → Network tab.
- Process a file. You'll see the engine or AI model download to you (once — it's cached after that).
- Look for uploads: there are none. Your file never appears in outgoing traffic, because it never leaves the page.
This also means the on-device tools keep working if you go offline after the first load.
Standing on open shoulders
The models and engines we ship, with their real licenses. Open source is the other half of why this can be free — credit where it's due.
The honest trade-offs
- ▸ First use of a heavy tool downloads its engine or model (we show the size and ask first — then it's cached).
- ▸ Speed follows your device: a modern laptop flies, an old phone doesn't. A paid cloud service can be faster on weak hardware.
- ▸ The newest browser APIs aren't everywhere: WebGPU is best in current Chrome/Edge. Every tool detects your browser and says honestly which engine it's using.
- ▸ Browser memory has limits — the video tools are happiest with social-length clips, not feature films.
- ▸ We never promise what the browser can't do: no in-browser video upscaling, no text-to-video. If it appears here, it actually works.
Why give it away?
This site is one indie builder's project. Useful free tools are how it grows — you use them, some of you link to them, the site gets found. That's the whole business model. (There's music too.)
Use the free tools →FAQ
How can these tools be free — what's the catch?
No catch, just architecture: the heavy work runs on YOUR device (GPU via WebGPU, native codecs via WebCodecs, CPU via WebAssembly), not on our servers. Our marginal cost per use is ~zero, so there's nothing to charge for. The site is one indie builder's project; the free tools are how it grows.
Are my files uploaded?
No. For the on-device tools (video studio, background remover, PDF, image, audio tools) your file never leaves the browser. You can verify it: open your browser's dev tools → Network tab while using a tool. You'll see engine/model downloads coming IN, and no uploads going out.
Why do some tools download an engine or AI model first?
The software that does the work has to live somewhere. Instead of our server, it downloads to your browser once — the ~32 MB video engine, or an AI model (13–110 MB) — then it's cached, so later runs start instantly. We always show the size and ask before any big download.
Will you add accounts, watermarks or paid tiers later?
The on-device tools stay free with no watermark and no caps — their cost to us doesn't grow with use, so there's no pressure to gate them. Where a feature genuinely costs money to run (server-side things), we say so on the page instead of pretending.
What's the trade-off vs paid cloud tools?
Speed depends on your device: a modern laptop is fast; an old phone is slower. First use includes a one-time download. Browser support varies for the newest APIs (the tools detect this and tell you which engine you're on). Cloud services can be faster on weak devices — but they cost money and see your files.