About Privatool
Privatool is a privacy-first online toolbox where every operation runs entirely in your browser. Your files are never uploaded to any server, never stored in any cloud, and never seen by anyone but you. We built real tools — image compression, PDF merging, JSON formatting — that respect the fact that your files are yours.
The problem with existing tools
Tools like iLovePDF, SmallPDF, and Convertio are convenient — but they work by uploading your files to their servers for processing. That means your contract drafts, medical scans, financial statements, and personal photos travel across the internet to a third-party machine you know nothing about.
Most of these services retain uploaded files for hours or days. Some use them to train models. Others have suffered data breaches. And even the ones with good intentions represent an unnecessary risk for something as simple as compressing an image.
We thought: these are tasks a browser can do entirely on its own. So why is the default to upload?
How Privatool is different
Privatool runs every tool using WebAssembly and browser-native APIs. When you compress an image, the pixel data never leaves your RAM. When you merge PDFs, the bytes are assembled inside your browser tab and handed back to you as a download — without touching any network request.
Our servers only deliver the tool itself — the HTML, CSS, and JavaScript. Once the page loads, the server is out of the picture. There is no upload endpoint, no processing queue, no temporary storage.
How it works
Three steps — none of them involve a server.
Choose a tool
Pick from our library of image, PDF, text, and developer tools. No account needed — open the page and start immediately.
Files processed locally
Your file is loaded directly into your browser. WebAssembly and client-side JavaScript handle all the processing — on your own CPU, inside your own browser tab.
Download your result
The output is generated in-memory and offered as a download — straight from your browser to your filesystem. Nothing is ever sent to a server.
Our values
Privacy by design
Privacy is not a checkbox we ticked after the fact. The architecture physically cannot send your files anywhere — there is no upload endpoint to call.
No login required
We will never ask for your email to compress an image. Every tool works instantly, anonymously, with no session tracking or account creation.
Always free core tools
The tools that matter most — image compression, PDF merging, JSON formatting — are free forever. No trial period, no watermarks, no file size gotchas buried in fine print.
Technical transparency
We believe you should know exactly how your data is (not) handled.
WebAssembly
Heavy operations like PDF manipulation and image encoding run as compiled WASM modules at near-native speed — entirely inside the browser sandbox.
Client-side JavaScript
Lighter operations use the browser's own APIs: Canvas for image resizing, FileReader for file access, the Web Crypto API where needed.
Zero backend processing
Our servers serve the web application — HTML, CSS, JavaScript. They never receive your files, never buffer them, never log them.
No third-party data sharing
We use basic anonymous analytics (page views, no file metadata) and nothing else. Your files are never described, fingerprinted, or shared.
Every tool on Privatool is open for inspection — open your browser DevTools, watch the Network tab, and confirm for yourself that no file data leaves your machine.
See it for yourself
Open DevTools, watch the Network tab, and try any tool. You will see zero file uploads.
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