Frequently asked questions
Quick answers about PDFZOID, your files and the tools.
Is PDFZOID free?
Yes. Every tool is 100% free to use, with no watermark and no sign-up. You can download your result instantly. A free PDFZOID account is optional.
Are my files uploaded to your servers?
The tools are built to process your file in your browser, so it is not intentionally uploaded to PDFZOID servers. If a tool ever needs server processing, it says so on the page before you use it.
Do I need to install anything?
No. The tools run in a modern browser such as current versions of Chrome, Edge, Firefox and Safari, on desktop or mobile.
Do I need an account to download?
No. You can download your result instantly without an account or email address. A free account is optional and only lets you sign in on future visits.
What file types can I use?
PDF for most tools, JPG and PNG images for the image tools, and .docx files for Word to PDF. Older .doc files are not supported; save them as .docx first.
Is there a file size limit?
Files up to 200 MB are accepted, but very large files can be slow or run out of memory, especially on phones. For big documents, use a computer.
Will compressing a PDF reduce its quality?
The standard setting keeps text selectable and mostly optimizes the file structure. The option that converts pages to images makes the smallest files but removes selectable text.
How does Protect PDF work?
Protect PDF encrypts your document with a password using AES-128 encryption. Keep the password safe: we cannot recover it for you.
Can Unlock PDF remove any password?
Unlock PDF removes the password when you know it, and can remove owner restrictions such as no-printing. It cannot guess or break an unknown password.
Word to PDF looks different from my document. Why?
The converter handles text, headings, lists, tables, images and page layout. Headers, footers, text boxes, footnotes and equations are not supported yet.
A tool is not working. What should I do?
Refresh the page and try again, and make sure your browser is up to date. If the problem continues, contact us with the tool name, your device and browser.
Still have a question?
Send us a message and we will help.