ZANCTA

Local-first file tools

Powerful file tools.Always local.Always private.

ZANCTA runs supported file processing entirely in your browser. Your files stay in your control — always.

Choose a tool How it works
  • Supported workflows process selected file bytes locally.
  • Tool pages state formats, limits, and honest failure cases.
  • Downloads are generated in the browser when a tool produces output.

The boundary

this browser / local
  • 01 Selected on your device
  • 02 Processed inside this tab
  • 03 Result stays here

No file upload for implemented local tools. The workflow above illustrates the boundary: nothing crosses it.

The ZANCTA promise

Selected locally

You choose the files from your device.

Processed in this browser

We run the tools locally, inside your browser.

Result available locally

Download or copy results. Nothing is uploaded.

Your privacy is our product

The file never leaves your device.

Privacy first

Your data never leaves your device for the implemented local workflows.

Works offline

No internet required for supported tools once the app is loaded.

Broadly compatible

Works with PDF, JPG, PNG, and WebP across modern browsers.

No sign-up for free

Free tools are available immediately, without an account.

A focused suitefor file work.

Focused tools that respect your privacy and just work. 11 working local workflows, one clearly deferred capability.

Explore all tools

Pricing

Start free.Upgrade when you're ready.

Every implemented local tool is free to use right now. Premium plans are designed — monthly and annual — and will open only once live checkout, entitlements, and support are verified end to end.

  • Free: all implemented local workflows, no account required.
  • Premium monthly and annual tiers are published on the pricing page.
  • Premium checkout is not available at the moment — we say so plainly.
See pricing Open a tool