Privacy by Design
Your documents never leave your device. Not now, not ever.
How It Works
Elixir Fuse processes everything directly in your browser using JavaScript and WebAssembly. There is no server involved.
Client-Side Processing
All PDF operations — merging, splitting, rotating, compressing — happen entirely in your browser using pdf-lib. Your files are read into memory locally and never transmitted anywhere.
No Uploads
There is no upload endpoint. There is no server to receive your files. The application is a static HTML/JS bundle that runs entirely on your machine.
Nothing Persists
When you close the tab, everything is gone. We use no localStorage, no IndexedDB, no cookies. Your files exist only in RAM while you're using the tool.
What We Can't See
We have zero access to any of the following:
Technical Guarantees
Enforced at the browser level, not just promised.
Content Security Policy
Our CSP headers include connect-src 'none', which means the browser physically blocks any outbound network requests from our page. Even if malicious code were injected, it couldn't phone home.
No Third-Party Scripts
We load only pdf-lib and pdf.js from a trusted CDN for PDF processing. No analytics, no tracking pixels, no social widgets, no ad networks.
No Cookies or Storage
Zero cookies. Zero localStorage. Zero IndexedDB. Zero sessionStorage. There is literally nothing persisted between visits.
Analytics ≠ File Access
We use standard web analytics (page views, visitor counts) to improve the product. But analytics cannot and does not access your files — document processing happens in a completely separate execution context with no network access.
Transparent Architecture
We're upfront about how everything works.
Elixir Fuse processes your documents entirely in your browser. We're transparent about our architecture so you can trust the privacy guarantees — your files never leave your machine, and our infrastructure has no mechanism to receive them.
What We Do Track
We use standard web analytics to understand how the site is used. Here's exactly what that means.
We Track
Page views, visitor counts, which tools are popular, geographic region, referral source. Standard web analytics — the same as any website you visit.
We Don't Track
Your file contents, file names, page counts, what you merge, what you download, passwords you enter, or anything about your documents. We literally can't — that data never reaches us.
How We Compare
Most online PDF tools upload your files to their servers. We don't.
| Feature | Elixir Fuse | Typical Online Tools |
|---|---|---|
| File Upload Required | ✗ Never | ✓ Always |
| Server Processing | ✗ None | ✓ Required |
| Files Stored on Server | ✗ Never | ✓ Temporarily |
| Account Required | ✗ No | ✓ Often |
| Tracking / Analytics | Page views only (no file data) | ✓ Extensive (files + behavior) |
| No Server Required | ✓ Once loaded, no network needed | ✗ Requires constant connection |
| File Size Limits | ✗ None | ✓ Usually |
| Free to Use | ✓ Always | Limited |
Dependencies & SBOM
Full transparency on every library we use. Download the machine-readable SBOM or review below.
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