The fastest way depends on what you're starting with

Creating a PDF is usually a one-step process built into the program you're already using. If you have a document in Microsoft Word, Google Docs, Apple Pages, or almost any other writing software, you can export or print it as a PDF without installing anything new. The menu path changes by program, but the result is the same: a file that looks identical on any device and cannot be accidentally edited.

If you're starting with a paper document, a photo, or a file type that doesn't have a built-in export option, you'll need a different approach — either a dedicated PDF tool or a print-to-PDF method. The choice depends on what you have and what you need the final file to do.

Key Takeaways

  • Word, Google Docs, and most writing programs have a built-in "Export as PDF" or "Save as PDF" option in the File menu that requires no additional software.
  • If your program doesn't have a direct export option, you can print to PDF by selecting "Print" and choosing "Save as PDF" from the printer dropdown.
  • Scanning a paper document or converting an image requires a scanning app on your phone or a dedicated PDF tool on your computer.
  • Online PDF converters work for single files but upload your document to someone else's server, so avoid them for sensitive information.

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

Open the document you want to convert. In Microsoft Word, click File in the top left, then Save As. Choose a location for the file, and in the dropdown that says "Save as type," select PDF. Click Save. The PDF appears in the same folder as your original document.

In Google Docs, click File, then read, then PDF Document. The file downloads to your computer's default read folder, usually called Downloads. In Apple Pages, click File, then Export To, then PDF. You'll see options for page size and compression; the defaults work for most uses.

LibreOffice Writer and other free writing programs follow the same pattern: File → Export as PDF or Save As with PDF selected. The exact wording varies, but the principle is identical across all of them.

Using print-to-PDF when export isn't available

Some programs don't have a direct PDF export option. In those cases, you can print the document to a PDF file instead of to paper. Open the document, click File, then Print. In the printer dropdown at the top, look for an option called Save as PDF, Print to PDF, or Microsoft Print to PDF. Select it, then click Print.

A dialog box appears asking where you want to save the file and what to name it. Choose your location and filename, then click Save. The PDF is created in that location. This method works on Windows, Mac, and Linux, though the exact menu names vary slightly by operating system.

Print-to-PDF produces the same result as a direct export — the document becomes a fixed image that cannot be edited in most programs. The file size is usually slightly larger than an export, but the difference rarely matters unless you're sending dozens of files.

Scanning a paper document into PDF format

If you have a physical document, you can scan it directly to PDF using a scanner connected to your computer, or by using your phone's camera and a scanning app. Most modern scanners come with software that lets you choose PDF as the output format. Open the scanner software, place the document face-down on the glass, and select PDF from the file type options before scanning.

On a phone, apps like Microsoft Lens, Adobe Scan, or Google Drive's built-in document scanner let you photograph a page and save it as a PDF. Open the app, point your phone's camera at the document, take the photo, and the app automatically crops and straightens it. You can then save it as a PDF to your phone or upload it to cloud storage.

Scanned PDFs are image files, not text files, which means you cannot search for words inside them or copy text out. If you need to edit the text later, you'll need optical character recognition (OCR) software, which reads the image and converts it to searchable text. Some PDF tools include OCR; others charge extra for it.

Converting images and other file types to PDF

If you have a JPG, PNG, or other image file, you can convert it to PDF using a dedicated tool. On Windows, right-click the image file, select Open with, and choose Microsoft Edge or another web browser. Once the image opens, press Ctrl+P to print, select Save as PDF from the printer dropdown, and save the file.

On Mac, open the image in Preview (the default image viewer), click File, then Export As, and change the format dropdown to PDF. For multiple images at once, use a dedicated PDF tool like PDFtk, IlovePDF, or Smallpdf. These programs let you upload several images, arrange them in order, and read them as a single PDF file.

Be cautious with online converters: they upload your file to someone else's server. For personal documents, tax returns, or anything with sensitive information, use a tool installed on your own computer instead. Desktop PDF software like Adobe Acrobat, PDFtk, or even the print-to-PDF method keeps your file on your device.

Combining multiple files into one PDF

If you need to merge several documents into a single PDF, the method depends on what you're starting with. In Microsoft Word, you can insert other Word documents into one file, then export the combined result as PDF. Click Insert, then Object, then Text from File, and select the documents you want to add. Once they're all in one file, export to PDF as usual.

For combining already-created PDFs, or for mixing different file types, use a dedicated PDF tool. Free desktop options include PDFtk (Windows and Mac) and Ghostscript (all platforms). Online tools like IlovePDF, Smallpdf, and PDFmerge let you upload multiple files, arrange them in order, and read the merged result. Again, avoid online tools for sensitive documents.

If you're combining scanned pages, most scanning software has a batch mode that lets you scan multiple pages and save them as one PDF automatically. Check your scanner's manual or software settings for this option — it's faster than scanning and merging separately.

Choosing the right method for your situation

Start with the simplest option: if the program you're using has Export as PDF or Save as PDF, use that. It's built in, requires no extra software, and produces the smallest file. If that option doesn't exist, use print-to-PDF — it works on every operating system and takes the same amount of time.

For scanning paper or converting images, use your phone's camera and a scanning app if the document is small and you need it quickly. Use a dedicated scanner if you're processing many pages or need higher quality. For combining files or working with PDFs that already exist, a desktop tool keeps your files private and usually works faster than uploading to a website.

The file size matters only if you're emailing the PDF or storing many of them. Most PDFs from text documents are under 5 MB. Scanned documents and image-heavy files are larger — sometimes 10 to 50 MB per page. If size is a problem, use a compression tool, but understand that compression reduces image quality slightly.

Frequently Asked Questions

Can I edit a PDF after I create it?

Most PDFs cannot be edited in standard programs like Word or Google Docs. You need a PDF editor like Adobe Acrobat, PDFtk, or free tools like LibreOffice Draw. If you think you'll need to make changes later, keep the original file in its native format (Word, Google Docs, etc.) and create the PDF only when you're ready to share or archive it.

Why is my PDF file so large?

Scanned documents and PDFs created from images are much larger than PDFs created from text. A 10-page Word document might be 500 KB as a PDF, but the same document scanned as images could be 50 MB. If file size is a problem, use a compression tool or reduce the image quality when scanning. Be aware that compression makes images blurry.

What's the difference between exporting and printing to PDF?

Exporting usually produces a smaller file and preserves formatting more accurately. Printing to PDF works when export isn't available and produces nearly identical results. For most purposes, you won't notice a difference. Use export if it's available; use print-to-PDF if it's not.

Is it safe to use online PDF converters?

Online tools are convenient for one-off conversions, but they upload your file to someone else's server. For sensitive documents like tax returns, medical records, or financial statements, use a tool on your own computer instead. Desktop options are free and keep your information private.

Can I create a PDF from a website?

Yes. Open the webpage in any browser, press Ctrl+P (Windows) or Cmd+P (Mac), select Save as PDF from the printer dropdown, and save the file. This captures the page as it appears on your screen. Some websites block this feature, but most allow it.