Question 1

Is PDFWix really free to use?

Accepted Answer

Yes. Every core PDF tool on PDFWix — merge, split, compress, convert, rotate, watermark, sign, protect and unlock — is free with no watermarks added to your files. We offer paid API plans for developers who need higher monthly volumes, but the web app stays free for everyday use.

Question 2

Are my files safe and private on PDFWix?

Accepted Answer

Yes. Most tools process your PDF entirely inside your browser, which means your file never leaves your device. The two tools that need a server (Protect PDF, Unlock PDF) send the file over HTTPS and process it in memory only — nothing is written to disk. We never train AI on your documents.

Question 3

Do I need to install software or sign up?

Accepted Answer

No installation and no signup are required to use PDFWix. Open the tool in any modern browser on Windows, macOS, Linux, ChromeOS, iOS or Android, drop in your file, and download the result. Creating a free account only unlocks history and the developer API.

Question 4

What is the maximum file size I can upload?

Accepted Answer

Browser-based tools handle PDFs as large as your device's RAM allows — typically around 100 MB on a laptop. Server-side tools (Protect, Unlock) currently accept files up to 25 MB per request.

Question 5

Which browsers and devices does PDFWix support?

Accepted Answer

PDFWix runs in any modern browser released in the last two years: Chrome, Edge, Firefox, Safari, Brave, Opera and Arc. The interface is fully responsive, so it works on desktop, laptop, tablet and phone. There's no native app to install.

Question 6

Can I use PDFWix offline?

Accepted Answer

PDFWix is a Progressive-Web-friendly site. Once a tool is loaded in your browser, the in-browser tools (such as merge, split, rotate, JPG to PDF) keep working even if your connection drops. Server-side tools require an active internet connection.

Question 7

How is PDFWix different from iLovePDF, SmallPDF or Adobe Acrobat?

Accepted Answer

PDFWix focuses on speed and privacy: most tools run locally in your browser instead of uploading your files to a server. There are no daily task limits, no forced sign-ups and no aggressive upsells. We also expose a clean developer API so you can automate the same tools from your own apps.

Question 8

Does PDFWix add a watermark to my PDFs?

Accepted Answer

No. PDFWix never adds a watermark, footer or branding to files you create. The output looks exactly like the input, plus the changes you requested.

Question 9

Is there a desktop or mobile app?

Accepted Answer

Not yet. PDFWix is a web app and works on every device with a modern browser, so a separate download isn't necessary. You can add PDFWix to your home screen from Chrome or Safari for a one-tap launcher that feels like an installed app.

Question 10

How do I report a bug or request a new tool?

Accepted Answer

Email support@pdfwix.com or use the feedback widget in the footer. We read every message and prioritise the most-requested tools.

Every PDF tool you need, in one place

Frequently Asked Questions