100% Client-Side • No uploads

The Privacy-First PDF Workspace
for the Modern Browser

Twelve professional PDF utilities — merge, split, compress, convert, watermark, rotate, encrypt and more. Everything runs locally on your device, so your files never reach a server.

All PDF tools

12 modules

Why PDFGuru?

PDFGuru was built on a single principle: your documents are yours. Most "free" PDF sites upload every file you touch to their servers — and you have no idea what happens next. PDFGuru runs every byte of work inside your browser using WebAssembly-grade JavaScript libraries. Nothing ever touches the network.

✓ Zero uploads ✓ GDPR friendly ✓ No file size limit ✓ No installation ✓ No watermark added

How PDFGuru Keeps Your PDFs Completely Private

PDFGuru is a privacy-first PDF utility suite that runs entirely in your browser tab. When you open a tool — whether it is the PDF merger, the splitter, the compressor, or the password protector — every operation is performed by JavaScript executing locally on your machine. There is no server-side processing endpoint where your file is sent, stored, or analyzed.

Each tool loads a single HTML page and a small JavaScript module. When you drag a PDF onto the dropzone, the browser hands the file straight to a typed array in memory. We use industry-standard libraries such as pdf-lib for editing PDF structures, pdf.js (Mozilla's Battle-tested renderer) for pixel-perfect rendering and text extraction, and jspdf for generating new files from images. None of them transmit anything over the wire.

If you are a professional handling confidential contracts, a lawyer reviewing case files, a student submitting sensitive academic records, a healthcare worker operating under HIPAA, or anyone in a regulated industry — PDFGuru removes the worry of accidentally uploading to a third-party server. The whole toolchain runs in the browser sandbox and can even be used offline by loading the homepage once.

There is no account, no tracking of your file contents, and no artificial file-size ceiling. Whether your document is two kilobytes or two gigabytes, processing happens as fast as your CPU and memory allow. We never add visible watermarks of our own, never expire your downloads, and never ask you for an email address.

Below the tools you will find answers to common questions, FAQs structured according to Schema.org markup so search engines can feature them directly. We believe privacy, speed and respect for our users is what sets PDFGuru apart from iLovePDF, Smallpdf, ILovePDF, Sejda and other competitors in the space.

Frequently Asked Questions

Yes. PDFGuru is completely free to use without any registration, hidden fees, file-size limits or daily quotas. The site is supported by clearly-marked display advertising — your files are never sold, traded or analyzed.
No. Every tool processes files entirely within your browser using JavaScript. There is no upload server, no shared queue, no temporary cloud storage. You can disconnect your internet after the page has loaded and the tools will still work.
There is no imposed limit. PDFGuru uses only your device's CPU and RAM. Very large PDFs may take longer to process on older machines, but the engine never blocks you from trying.
Any modern browser released in the last few years will work — Chrome, Edge, Firefox, Safari, Brave, Arc, Opera and others. JavaScript ES6+ and the File/Canvas APIs are the only requirements.
Yes. Once the page finishes loading, all libraries are cached by your browser. You can disconnect and continue using the tool offline, although subsequent navigation may require internet access.