No tool matches that.
Every Vuiso tool runs locally in your browser. Nothing is uploaded, nothing is stored on a server, and there is no account to create.
Each tool opens straight in your browser. No app, no plugin, no sign-up.
Your original file is never changed. The result is saved as a new file, and the pages keep their quality.
No ads, no watermark, no page limit, no paid tier. Every feature works from the start.
Every tool is a single HTML file. Download it once and it keeps working with no internet, no installation and no server.
Useful wherever uploading a file is not an option:
Every tool is a static page: HTML, CSS and JavaScript, with Mozilla's pdf.js (reading and drawing PDFs) and pdf-lib (writing them) bundled inside. Once the page has loaded it needs nothing more from the network, and there is no Vuiso backend to talk to.
Your file never goes through an upload form. The browser reads it from disk into memory with the File API, the tool works on those bytes inside the page, and the finished PDF is handed back to the browser as a Blob and saved like any other download.
# the path of your file your disk → File API → ArrayBuffer → pdf.js / pdf-lib, in this tab → Blob → Downloads folder # the lock on every tool page Content-Security-Policy: connect-src 'none' // no fetch, XHR, sockets form-action 'none' // no form posts base-uri 'none'
pdf.js renders in a Web Worker created from a blob: URL inside the page, where the browser allows it. No worker script is fetched from anywhere.
No cookies, no IndexedDB, no service worker. The only thing a tool stores is your language choice, in your own browser's localStorage.
No analytics, ad or tracking scripts, and no external fonts or CDNs. The site's own pages go further with default-src 'none': only files from vuiso.com may load.
HTTPS with HSTS, Referrer-Policy: no-referrer, and a Permissions-Policy that switches off the camera, microphone, location and USB.
Vercel serves the pages, so like any web host it handles the request for a page. It never sees your document, because no request ever carries one.
Open DevTools, watch the Network tab and run a tool: your file never appears in a request. Or disconnect first and watch the job finish anyway.
We built Vuiso because most online PDF tools make you upload your document, and after that all you can do is hope it really gets deleted.
Like handing your document to a stranger and waiting for it to come back.
Like working on it yourself at your own desk. We just provide the tools.
Think of the PDFs you handle:
Upload one of these and all you have is a promise that it gets deleted in a few hours. With Vuiso, the file never leaves your device.
Anyone who works with PDFs:
Free for personal and commercial use. It also works where online PDF tools are blocked, since nothing is uploaded.
We collect no personal data, use no tracking cookies, and sell no information.
No file is processed on a server and the pages are hosted free by Vercel, so Vuiso stays free: no ads, no limits, no paid tier. If a tool saved you time, a coffee helps keep it going. Skipping it is completely fine.