Absolutely. This is the core pillar of ApexPDF. Unlike other tools that upload your files to a remote server, ApexPDF processes everything 100% locally in your web browser. Your files never leave your computer, meaning we never see your data, and no one else can either.

Yes, it is completely free. There are no subscriptions, no hidden fees, no credit cards required, and no watermarks on your documents. We believe that basic document tools should be accessible to everyone for free.

We use a modern technology called WebAssembly. This allows us to run powerful PDF processing libraries (like PDF-lib, MuPDF, and others) directly inside your browser engine. It's essentially the same code that runs on a server, but it executes on your local CPU instead.

Yes! ApexPDF is fully responsive and works on iOS (iPhone/iPad) and Android devices. As long as you have a modern browser like Safari or Chrome, you can manage your PDFs on the go.

No account is required. We don't ask for your email, your name, or any personal details. You can start using any tool immediately without any registration hurdles.

There are no artificial limits. You can merge, split, or convert as many files as you want, as many times as you need. The only real limitation is your own device's memory if you are handling thousands of pages at once.

ApexPDF supports over 40+ formats, including Word (DOCX/DOC), Excel (XLSX), PowerPoint (PPTX), Images (JPG, PNG, WebP, SVG, TIFF, HEIC), E-books (EPUB, MOBI), and even professional formats like XPS and PostScript.

Yes, ApexPDF is free for both personal and commercial use. It's especially useful for business environments where data privacy policies prevent uploading documents to third-party cloud servers.

Never. We do not add any watermarks, branding, or advertisements to your generated files. Your documents remain completely professional and clean.

We care about your privacy. ApexPDF does not track personal information. We use Simple Analytics solely to see anonymous visit counts. This means we can know how many users visit our site, but we never know who you are. Simple Analytics is fully GDPR-compliant.

Failures are rare but can happen if:

• The PDF is corrupted or has structural errors.
• The file is password-protected (use our Unlock tool first).
• Your device ran out of memory (happens with extremely large files on older mobile devices).
• The file format is non-standard.