The fastest way to convert an image to PDF
You can convert a JPG, PNG, or other image file to PDF in three ways: using built-in tools on your computer, using an online converter, or using a dedicated app. On Windows, the simplest method is to right-click the image, select "Print", choose "Microsoft Print to PDF" as your printer, and click Print. On Mac, open the image in Preview, go to File > Export As, change the file format dropdown to PDF, and save. Both take about 30 seconds and require no additional software.
If you have multiple images to combine into one PDF, or if you want more control over the final file, you will need a different approach — either an online tool or a desktop program. The method you choose depends on whether you want to keep the file private, whether you have the software already installed, and how many images you are converting.
Key Takeaways
- Windows users can print any image directly to PDF using the built-in Microsoft Print to PDF printer without installing anything.
- Mac users can export images as PDF through the Preview app, which comes with every Mac.
- Online converters work on any device but require uploading your image to a website, which may not be suitable for sensitive files.
- If you need to combine multiple images into one PDF, desktop software or online tools designed for that purpose work better than the print method.
- The PDF file size will be similar to the original image size, so converting does not compress the file.
Converting a single image on Windows using Print to PDF
Right-click the image file you want to convert. Select "Print" from the menu that appears. A print dialog will open showing your available printers.
In the printer dropdown at the top of the dialog, select "Microsoft Print to PDF". This is a virtual printer built into Windows 10 and later — it does not send anything to a physical printer, but instead creates a PDF file. Click the "Print" button. A save dialog will open asking where you want to save the PDF and what to name it. Choose your location, type a filename, and click "Save". Windows will create the PDF in that folder within a few seconds.
If you do not see "Microsoft Print to PDF" in your printer list, your Windows version may be older. Use the online converter method instead, or download a free PDF printer like Bullzip or PDFtk.
Converting a single image on Mac using Preview
Open the image file using Preview — the default image viewer on Mac. You can do this by right-clicking the image, selecting "Open With", and choosing Preview, or by double-clicking the image if Preview is already set as the default.
Once the image is open in Preview, click the "File" menu at the top of the screen. Select "Export As" from the dropdown. A save dialog will appear. At the bottom of this dialog, you will see a dropdown that says "Format" — click it and select "PDF" from the list. Choose where you want to save the file, type a filename, and click "Save". Preview will create the PDF immediately.
Using an online converter for any device
Online converters work on Windows, Mac, or any device with a web browser. Go to a converter website such as CloudConvert, Zamzar, or ILovePDF. These sites have a button to upload your image file. Click it, select your image from your computer, and wait for the upload to finish.
Once the image is uploaded, the site will usually convert it automatically. If it does not, look for a "Convert" or "Start" button and click it. After a few seconds, you will see a download button. Click it to save the PDF to your computer. The entire process takes about one minute.
The main drawback of online converters is that your image is temporarily stored on someone else's server. If the image contains sensitive information, use the Windows Print to PDF or Mac Preview method instead. Most reputable converters delete uploaded files after a few hours, but you have no way to verify this.
Combining multiple images into one PDF
If you have several images you want to merge into a single PDF, the print method will not work well — it converts one image at a time. Instead, use an online tool designed for this purpose, such as ILovePDF, SmallPDF, or PDFtk. These sites have a specific "Merge Images" or "Images to PDF" option.
Click the upload button and select all the images you want to combine. The tool will usually let you drag and drop them to reorder them. Once you are satisfied with the order, click the convert or merge button. The site will create a single PDF containing all your images in the order you specified. Download the file when it is ready.
If you convert images regularly, consider installing desktop software instead. Adobe Acrobat, Microsoft Word, or free programs like LibreOffice can all combine images into a PDF. These programs keep your files on your computer rather than uploading them to a website.
Understanding PDF file size after conversion
Converting an image to PDF does not make the file smaller or larger — the PDF will be roughly the same size as the original image file. A 5 MB JPG will become a 5 MB PDF. If you need to reduce file size, you must compress the image before converting it, or use a PDF compression tool after conversion.
Some online converters offer compression as an optional step during conversion. If file size matters for your use case — for example, if you need to email the PDF — look for a converter that includes a compression option, or compress the image first using a tool like TinyPNG or your computer's built-in image editor.
Troubleshooting common conversion problems
If the PDF looks blurry or low-quality after conversion, the original image was likely low-resolution. Converting does not improve image quality — it only changes the file format. If you need a higher-quality result, start with a higher-resolution image.
If the image appears rotated or sideways in the PDF, rotate it in your image viewer before converting. On Windows, right-click the image and select "Rotate" if available, or open it in Paint and use the rotate tool. On Mac, open it in Preview and use the Tools menu to rotate it. Then convert the corrected image to PDF.
If the PDF is much larger than expected, the image itself was large. This is normal. If you need a smaller file, compress the image before converting, or use an online converter that offers compression during the conversion process.
Frequently Asked Questions
Can I convert a screenshot to PDF?
Yes, use the same method as any other image. On Windows, take a screenshot, save it as an image file, then print it to PDF. On Mac, take a screenshot, which automatically saves to your desktop, then open it in Preview and export as PDF.
What if my image is in HEIC format on Mac?
Preview can open HEIC files. Open the image in Preview, go to File > Export As, select PDF as the format, and save. If Preview will not open the HEIC file, convert it to JPG first using Preview's Export As option with JPG selected, then convert the JPG to PDF.
Is it safe to use online converters with private photos?
Online converters store your file on their servers temporarily. If the image contains sensitive information, use the Windows Print to PDF or Mac Preview method instead, which keeps the file on your computer throughout the process.
Why is my PDF showing only part of the image?
This usually happens when the image is very large and the print settings are set to fit the page. On Windows, open the Print dialog again, look for a "More settings" or "Advanced" option, and make sure the image is set to print at full size rather than scaled to fit the page.
Can I edit the image after converting it to PDF?
Once converted to PDF, editing the image becomes more difficult. If you think you might need to edit it later, keep the original image file and only convert to PDF when you are finished making changes.