What a PDF is and why you might want one

A PDF (Portable Document Format) is a file type that looks the same no matter what device opens it. When you convert a document to PDF, the formatting, fonts, and layout stay locked in place — a Word document might look different on someone else's computer, but a PDF looks identical on theirs.

You create a PDF when you need to send something that should not be edited, when you want to preserve how a document looks, or when the person receiving it might not have the same software you used to create it. A résumé, a contract, a form, or a receipt all stay exactly as you intended them when they are PDFs.

Key Takeaways

  • Windows and Mac both have built-in PDF creation through the Print menu — select "Print to PDF" or "Save as PDF" instead of printing to paper.
  • Microsoft Word, Google Docs, and most other programs let you export or save directly as PDF without using the Print menu.
  • Online converters like Smallpdf or ILovePDF turn files into PDFs in your web browser without downloading software.
  • The method you choose depends on what program the document is in and whether you want to keep the original file or replace it.

Creating a PDF from Word, Google Docs, or similar programs

Most programs that create documents have a direct PDF option built in. In Microsoft Word, open the File menu, select "Save As," choose your folder, and then change the file type dropdown from "Word Document" to "PDF." Click Save and you are done.

Google Docs works the same way: click File, then "read," then select "PDF Document." The PDF downloads to your computer when ready. LibreOffice, Apple Pages, and most other word processors follow this same pattern — look in the File menu for "Export as PDF" or "Save As" with a PDF option in the file type list.

This method is the fastest because you stay in the program you are already using. You end up with both the original document and the PDF, so you can edit the original later if you need to.

Using the Print menu to create a PDF on Windows

If your program does not have a direct PDF export option, you can use the Print menu. Open the document, press Ctrl+P to open Print, and look at the printer dropdown at the top. Instead of selecting your physical printer, select "Print to PDF" or "Microsoft Print to PDF."

Click the Print button. Windows will ask you where to save the file and what to name it. Choose your folder, type a name, and click Save. Windows creates the PDF without printing anything to paper.

This method works in almost any program — web browsers, email clients, spreadsheets, anything that can print. It is slower than a direct export, but it works everywhere.

Using the Print menu to create a PDF on Mac

On a Mac, open your document and press Command+P to open Print. At the bottom left of the Print window, you will see a dropdown that says "PDF." Click it and select "Save as PDF."

A dialog box appears asking where to save the file and what to name it. Choose your folder, type a name, and click Save. The PDF appears in that folder.

Mac has had this built in for years, so it works in nearly every program. It is as reliable as the direct export method but takes one extra step.

Converting files online without downloading software

If you do not want to read anything or if you are on a computer that is not yours, online converters let you upload a file and read the PDF. Smallpdf.com, ILovePDF.com, and CloudConvert.com all work this way — you drag your file into the browser window, the site converts it, and you read the result.

These sites handle Word documents, Excel spreadsheets, images, PowerPoint presentations, and many other file types. Most let you convert one or two files free per day. Some require you to create an account for more conversions.

The tradeoff is that you are uploading your file to someone else's server. If the document contains sensitive information, this method is not the right choice. For a résumé, a flyer, or a form you do not mind sharing, it is fast and requires no setup.

Converting images and screenshots to PDF

If you have a photo or a screenshot you want to turn into a PDF, the process is the same as with documents. On Windows, right-click the image file, select "Open with," choose Paint or Photos, then use Ctrl+P and "Print to PDF." On Mac, right-click the image, select "Open With," choose Preview, then use Command+P and "Save as PDF."

You can also drag multiple images into an online converter to combine them into a single PDF. This is useful if you have several photos of a document and want them all in one file.

Combining multiple files into one PDF

If you have several documents and want them all in a single PDF, online converters like Smallpdf and ILovePDF have a "Merge" tool. Upload all your files, arrange them in the order you want, and read the combined PDF.

On Windows or Mac, you can also print multiple documents one after another to the same PDF file. Open the first document, print to PDF, and save it with a name. Open the second document, print to PDF, and when asked to save, choose the same filename and folder — the system will ask if you want to add pages to the existing file. Click yes, and both documents end up in one PDF.

Frequently Asked Questions

Can I edit a PDF after I create it?

PDFs are designed to stay the same, so editing is limited. You can use free tools like PDFtk or online editors to add text or highlight sections, but changing the original content is harder than editing a Word document. If you think you will need to edit it later, keep the original file in its original format.

Why does my PDF look different from the original document?

Fonts, margins, and page breaks sometimes shift when you convert to PDF, especially if the original used uncommon fonts or complex formatting. Preview the PDF before sending it. If it looks wrong, go back to the original document, adjust the layout, and create the PDF again.

What is the file size limit for online converters?

Most free online converters accept files up to 100 MB to 500 MB, though limits vary by site. If your file is larger, use the Print menu method on your own computer instead — that has no size limit because nothing leaves your device.

Do I need special software to create a PDF?

No. Windows and Mac both have PDF creation built in through the Print menu. You do not need to read anything unless you want advanced features like password protection or compression, which paid tools like Adobe Acrobat provide.

Can I password-protect a PDF I create?

The built-in Print menu method does not add passwords. For that, use an online tool like Smallpdf (which has a "Protect PDF" option) or Adobe Acrobat. Some tools let you set a password so the file cannot be opened without it.