The fastest way to make a PDF depends on what you're starting with

If you're working in Microsoft Word, Google Docs, or most other programs, you don't need special software — you can save directly as PDF using the "Save As" or "Export" option in the File menu. On Windows, you can also print any document to PDF by selecting "Microsoft Print to PDF" as your printer. On Mac, the print dialog has a "Save as PDF" button built in. If you're converting an image, a photo, or a scanned document, you'll need a different approach — either an online converter or a dedicated app.

The method you choose depends on three things: what file you're starting with, whether you want to keep the original file, and whether you need the PDF to look exactly like the original. This guide covers the most common situations and the simplest route for each one.

Key Takeaways

  • Word, Google Docs, and most office programs have a built-in "Save As" or "Export" option that creates a PDF without any extra software.
  • On Windows, you can print any document to PDF by choosing "Microsoft Print to PDF" as your printer instead of a physical one.
  • On Mac, open the print dialog and click "Save as PDF" in the bottom-left corner to convert any document.
  • For images, photos, or scanned documents, use an online converter like Smallpdf or ILovePDF, or a dedicated app like Preview on Mac.
  • PDFs preserve formatting and fonts, so they look the same on any computer, which is why they're useful for sharing documents you don't want changed.

Saving as PDF from Word or Google Docs

In Microsoft Word, open the document you want to convert. Click "File" in the top-left corner, then select "Save As". A dialog box will open. In the "Save as type" dropdown near the bottom, select "PDF". Choose where you want to save the file, give it a name, and click "Save". Word will create a PDF version while keeping your original Word document unchanged.

In Google Docs, open your document. Click "File" at the top, hover over "Download", and select "PDF Document (.pdf)". Your browser will download the PDF to your computer's Downloads folder. The original Google Doc stays online and unchanged. This works the same way in Google Sheets and Google Slides — just look for the same "File" menu and "Download" option.

Both methods preserve all formatting, fonts, images, and page breaks. The PDF will look identical to how the document appears on screen. This is why PDFs are useful for sharing — the person who receives it will see exactly what you see, regardless of what fonts or programs they have installed.

Using the print-to-PDF method on Windows

If you're working in a program that doesn't have a "Save As PDF" option, or if you want to convert something unusual like a web page or an email, use the print-to-PDF method. Open the document or file you want to convert. Press Ctrl + P on your keyboard to open the print dialog.

In the printer dropdown at the top, select "Microsoft Print to PDF" instead of your regular printer. Then click "Print". A dialog will ask you where to save the file and what to name it. Choose a location, type a name, and click "Save". Windows will create a PDF file in that location.

This method works with almost anything — Word documents, web pages, emails, images, or PDFs you want to modify. The only limitation is that the PDF will look like a printed version of the file, so if the original has multiple columns or unusual formatting, the PDF might reflow slightly.

Converting to PDF on Mac using the print dialog

On Mac, the print dialog has a built-in PDF option. Open the document you want to convert and press Command + P to open the print menu. At the bottom-left of the dialog, you'll see a dropdown that says "PDF". Click it and select "Save as PDF".

A new dialog will open asking where to save the file and what to name it. Type a name, choose a location (your Desktop or Documents folder is easiest to find later), and click "Save". Mac will create the PDF immediately. Like the Windows print-to-PDF method, this works with any document or file you can print, including web pages and emails.

If you want to add a password to protect the PDF or change other settings, click the "Security Options" button in the save dialog before you click "Save". This lets you require a password to open the file or prevent people from copying text out of it.

Converting images and scanned documents to PDF

If you're starting with a photo, a screenshot, or a scanned document, you'll need a different approach. On Mac, you can use the built-in Preview app. Open Preview, go to "File" and click "Open", then select your image. Once it's open, click "File" again and select "Export As". In the format dropdown, choose "PDF", name the file, and click "Save".

On Windows, you can use the built-in Photos app or Paint. Open the image, click "File", select "Save As", and look for a PDF option in the file type dropdown. If your program doesn't offer PDF as an option, use an online converter instead — Smallpdf, ILovePDF, and CloudConvert all let you upload an image and download it as a PDF without creating an account.

If you have multiple images you want to combine into one PDF, most online converters can do this. Upload all the images, arrange them in the order you want, and download as a single PDF. This is useful if you've scanned a document as multiple image files and want to combine them into one file.

When to use online converters

Online converters like Smallpdf, ILovePDF, and CloudConvert are useful when your program doesn't have a built-in PDF option, or when you need to convert an unusual file type. They work in your web browser — you upload a file, the converter processes it, and you download the result. Most are free for basic use.

The main trade-off is privacy. When you upload a file to an online converter, that file goes to someone else's server. For documents with sensitive information, it's safer to use the built-in methods in your program or operating system, which keep the file on your computer. If you're converting a public document or a photo, an online converter is fine and often faster than installing software.

Some online converters also let you edit PDFs — add text, remove pages, or combine multiple files. If you need to do this regularly, a dedicated PDF editor like Adobe Acrobat Reader (free version) or Preview on Mac might be worth learning, but for a one-time conversion, the online route is simpler.

Checking that your PDF looks right

After you create a PDF, open it to make sure it converted correctly. Double-click the PDF file to open it in your default PDF viewer — usually Adobe Acrobat Reader, Preview on Mac, or Microsoft Edge on Windows. Scroll through a few pages and check that text is readable, images are visible, and the layout matches the original.

If something looks wrong — text is cut off, images are missing, or the formatting is jumbled — try converting again using a different method. For example, if the print-to-PDF method didn't work well, try "Save As PDF" in the original program instead. If the original program doesn't have that option, try an online converter. Most problems come from unusual formatting in the original file, and switching methods usually fixes it.

Once you're happy with the PDF, you can delete the original file if you want to save space, or keep both. PDFs are smaller than most other file types, so storage usually isn't a concern.

Frequently Asked Questions

Can I convert a PDF back to Word or another format?

Yes, but the result depends on how the PDF was made. If it's a simple PDF created from a Word document, online converters like Smallpdf can convert it back to Word with reasonable accuracy. If the PDF is a scanned image of a document, you'll need OCR (optical character recognition) software, which reads the text in the image — this is less accurate and usually requires paid software or a specialized online tool.

What's the difference between saving as PDF and printing to PDF?

Saving as PDF (using "Save As" in the File menu) preserves the original formatting and is usually more accurate. Printing to PDF simulates what the document would look like on paper, so unusual layouts might reflow. For most documents, both methods produce similar results, but "Save As PDF" is more reliable when the original has complex formatting.

Will the PDF be smaller than the original file?

Usually yes, especially if the original is a Word document with large images. PDFs compress images automatically. However, if you're converting an image or a scanned document, the PDF might be larger because it's adding a container around the image. The difference is usually small — a few megabytes at most.

Can I password-protect a PDF I create?

Yes. On Mac, use the "Security Options" button in the print-to-PDF dialog. On Windows, you'll need to use an online converter or a dedicated PDF editor like Adobe Acrobat Reader (paid version). Most online converters have a "protect with password" option after you upload the file.

What if the PDF won't open?

Make sure you have a PDF viewer installed — Adobe Acrobat Reader is free and works on all computers. If the file still won't open, the PDF may be corrupted during conversion. Try converting the original file again using a different method. If you're converting from an online converter, try a different one.