How to convert an image to PDF

How to Convert an Image to PDF (August 2026) Guide

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Converting an image to PDF is one of those tasks that sounds complicated until you realize the tools are already on your device. Whether you are working on a Windows PC, a Mac, an iPhone, or an Android phone, you can turn JPGs, PNGs, and other image files into PDF documents without downloading anything extra. Our team put together this guide after testing every method across all major platforms, and we found that the built-in options on each device handle the job well for most people.

People convert images to PDF for all sorts of reasons. You might need to email a receipt as a single document, submit homework as a PDF, archive family photos, or send copies of an ID card. PDF files open consistently across all devices and operating systems, which makes them the go-to format for sharing important visual content. The format also preserves your image layout exactly as it appears, so the recipient sees what you see.

In this guide, we walk you through exactly how to convert an image to PDF on every major platform. We cover Windows, Mac, iPhone, iPad, Android, and free online tools. We also include a batch conversion section for combining multiple images into one PDF, a Linux method that most competitors skip, and troubleshooting tips for when things go wrong. Everything here is completely free and requires no paid software.

Table of Contents

Quick Comparison: Best Method for Each Platform

Here is a quick overview of the fastest built-in method on each device. We go into full step-by-step detail for every platform in the sections below.

  • Windows: Photos app then Print to PDF (built into Windows 10 and 11)
  • Mac: Preview app then Export as PDF (pre-installed on all Macs)
  • iPhone and iPad: Photos app then Share then Print then pinch to save
  • Android: Photos or Files app then Print then Save as PDF
  • Online: Free browser-based converters like Smallpdf or ILovePDF
  • Linux: LibreOffice or ImageMagick command line tool

Pick your platform below and follow the steps. Every method produces a clean PDF without watermarks or hidden fees.

How to Convert an Image to PDF on Windows

Windows 10 and Windows 11 both include a built-in feature called Microsoft Print to PDF that works as a virtual printer. This means you can convert any image to PDF directly from the Photos app without installing additional software. I have used this method hundreds of times, and it handles JPG, PNG, GIF, and BMP files with no issues.

The process takes about 30 seconds once you know the steps:

  1. Open the Photos app by searching for it in the Start menu or double-clicking your image file.
  2. Click the three dots (or the printer icon in older versions) at the top right of the window.
  3. Select Print from the dropdown menu.
  4. In the Print dialog box, change the printer to Microsoft Print to PDF.
  5. Choose your paper size (Letter is standard for most US uses, A4 for international).
  6. Click Print.
  7. A Save dialog appears. Choose where you want to save the file, type a name, and click Save.

Your PDF is now saved at the location you selected. The image quality stays the same as the original file because Print to PDF preserves the full resolution.

If you have multiple images you want in one PDF, select them all in the Photos app before clicking Print. Windows will combine them into a single multi-page PDF document. Each image becomes its own page.

Alternate Windows Method: Right-Click in File Explorer

Some Windows versions let you right-click an image file and select Print directly from the context menu. This opens the legacy Windows Photo Viewer print dialog where you can also select Microsoft Print to PDF as the destination. This method is faster if you already have the file in front of you in File Explorer.

How to Convert an Image to PDF on Mac

Macs make image to PDF conversion incredibly easy thanks to the Preview app that comes pre-installed on every macOS system. Preview handles JPG, PNG, TIFF, HEIC, and many other image formats. I personally find the Mac method the smoothest of all platforms because the Export option gives you direct control over output format without navigating through a print dialog.

Here are the exact steps to convert an image to PDF on Mac:

  1. Double-click your image file to open it in Preview (this is the default image viewer on Mac).
  2. In the top menu bar, click File.
  3. Select Export as PDF from the dropdown menu.
  4. Choose a name for your file and a save location.
  5. Click Save.

That is it. Your image is now a PDF file. The entire process takes about 10 seconds.

If you want more control over the output, hold down the Option key when clicking File to reveal the Export option. This gives you a format dropdown where you can select PDF along with Quartz filters that adjust quality and file size.

Converting Multiple Images to One PDF on Mac

To combine several images into a single PDF on Mac, select all the images in Finder, right-click, and choose Open With then Preview. Preview opens them all in a single window. From there, select all the images in the sidebar, then use the same File and Export as PDF steps. All selected images merge into one multi-page PDF document.

How to Convert an Image to PDF on iPhone and iPad

The iPhone method is the one that confuses the most people. I have seen dozens of Reddit threads from users who could not figure it out because the conversion tool is hidden inside the Print menu. Once you know the trick, it becomes second nature. No app download is required since everything works through the built-in Photos app and the iOS print system.

Follow these steps to convert an image to PDF on iPhone or iPad:

  1. Open the Photos app and tap the image you want to convert.
  2. Tap the Share button (the square with an arrow pointing up) at the bottom left of the screen.
  3. Scroll down and tap Print in the share sheet options.
  4. In the Printer Options screen, do NOT select a printer. Instead, pinch outward on the small preview image with two fingers.
  5. The preview expands into a full PDF document view.
  6. Tap the Share button again in the top right corner of the PDF view.
  7. Select Save to Files and choose a location in your iCloud Drive or on-device storage.

The pinch-to-zoom gesture is the key step that most people miss. It transforms the print preview into an actual PDF file that you can then save, email, or share. This trick works on all iPhones and iPads running iOS 13 and later.

For multiple images, select all the photos you want before tapping the Share button. iOS combines them into a single multi-page PDF when you save.

How to Convert an Image to PDF on Android

Android handles image to PDF conversion through the built-in print system, similar to the iOS approach. The exact steps vary slightly depending on whether you use Google Photos, the default gallery app, or the Files app, but the core process is the same. I tested this on Samsung, Google Pixel, and OnePlus phones, and the method works consistently across all three.

Here is how to convert an image to PDF on Android using the Photos or Gallery app:

  1. Open the Photos or Gallery app on your Android phone.
  2. Tap the image you want to convert.
  3. Tap the three dots (or Share icon) at the top or bottom of the screen.
  4. Select Print from the menu.
  5. At the top of the print screen, tap the dropdown that shows your printer name.
  6. Select Save as PDF from the list.
  7. Tap the PDF download icon or the Save button.
  8. Choose a save location and confirm.

Your PDF is saved to your selected location, typically the Downloads folder or your chosen Google Drive account.

Android Alternative: Using the Files App

On some Android phones, the Files by Google app provides a more direct route. Open Files, navigate to your image, long-press to select it, tap the three dots, and choose Print. Then follow the same Save as PDF steps. This method is useful if your gallery app does not have a Print option in the menu.

How to Convert an Image to PDF Online (Free Tools)

Online converters are the best option when you are on a shared computer, using a Chromebook, or simply want to avoid clicking through menus. These browser-based tools work on any operating system with a web browser. We tested the most popular free converters and found several that produce clean PDFs without watermarks or sign-up requirements.

Top Free Online Image to PDF Converters

  • ILovePDF: Drag and drop your JPG or PNG files, arrange the page order, and download the combined PDF. No account needed for files under a certain size.
  • Smallpdf: Upload your image, click Convert, and download the PDF. Clean interface with TLS encryption for file transfers.
  • Adobe Acrobat Online: Adobe’s free JPG to PDF tool handles one image at a time with reliable quality. Good option if you trust Adobe’s brand.
  • PDF24: Completely free with no file size limits or watermarks. Supports batch conversion of multiple images into one PDF.

The general process for any online converter is the same: upload your image, optionally adjust settings like page size and orientation, click convert, and download the result.

Security Considerations for Online Converters

When you upload an image to an online converter, that file travels to a remote server for processing. Most reputable services delete your files within a few hours, but you should still be cautious with sensitive documents like passports, tax forms, or medical records. For those, stick to the built-in offline methods described earlier in this guide. Our team recommends reading the privacy policy of any online tool before uploading personal documents.

For everyday images like homework, screenshots, or family photos, the major online converters are safe and convenient. They encrypt transfers using TLS and most do not require creating an account.

How to Convert Multiple Images into One PDF (Batch Conversion)

One of the most common questions we see on forums like Reddit is how to combine several images into a single PDF. This is called batch conversion, and it is useful for creating scanned document sets, photo collections, or multi-page submissions. Users frequently ask about handling 200 or more images at once, which requires a slightly different approach depending on your platform.

Batch Conversion on Windows

Select all the images you want in File Explorer, right-click, and choose Print. In the print dialog that appears, select Microsoft Print to PDF as the printer. Windows combines all selected images into one PDF where each image becomes a separate page. This works well for up to about 50 images before the interface gets sluggish.

For larger batches of 200 or more images, forum users on Reddit recommend using free tools like PDF24 Creator or IrfanView. PDF24 Creator installs as a desktop application and handles large batch jobs without crashing. IrfanView lets you batch convert using the File menu and includes options for page size and ordering.

Batch Conversion on Mac

Select all images in Finder, right-click, and choose Open With then Preview. In Preview, select all images in the sidebar using Command+A. Then go to File and Export as PDF. All images merge into a single document. Preview handles large batches well, even with hundreds of images.

Batch Conversion on iPhone and Android

On iPhone, select multiple photos in the Photos app before tapping Share then Print. The pinch-to-zoom trick works the same way and saves all images as one multi-page PDF. On Android, select multiple images in the gallery and use the same Print to PDF process. For very large batches on mobile, the free ILovePDF app provides better performance than the built-in tools.

How to Convert an Image to PDF on Linux

Most guides skip Linux entirely, but we wanted to cover it since the community actively asks about it on forums. Linux has multiple methods for converting images to PDF, ranging from graphical applications to powerful command line tools. The right choice depends on your comfort level with the terminal.

Linux Method 1: LibreOffice (Graphical)

If you have LibreOffice installed, which is the default office suite on most Linux distributions, you can insert images into a document and export as PDF. Open LibreOffice Writer, insert each image using Insert then Image, arrange them on pages, then click File and Export As then Export as PDF. This method gives you control over layout and page size.

Linux Method 2: ImageMagick (Command Line)

For power users, ImageMagick is the fastest way to convert images to PDF on Linux. Open your terminal and use the convert command. The basic syntax for a single image is simple: type convert followed by the image filename and then the desired PDF filename. For multiple images, list them all before the output filename, and ImageMagick combines them into a multi-page PDF.

ImageMagick handles batch conversion of hundreds of files efficiently and preserves original image quality. You can also use wildcards to convert every JPG in a directory at once. This is the method forum users recommend for large-scale conversion tasks.

Linux Method 3: img2pdf Tool

The img2pdf tool is specifically designed for lossless image to PDF conversion. Unlike ImageMagick, which may re-encode images, img2pdf wraps the image data directly into the PDF container without altering it. Install it through your package manager or pip, then run it with a single command pointing to your image files. This is the best choice when you need pixel-perfect quality preservation.

Tips for Best Image Quality and Small File Size

Converting an image to PDF does not have to mean bloated file sizes or degraded quality. A few adjustments during the conversion process can make a big difference in the final result. Here are the tips our team has learned from extensive testing.

Match Image Resolution to Output Purpose

If the PDF will only be viewed on screens, a resolution of 72 to 150 DPI is sufficient. For printing, aim for at least 300 DPI. Higher resolutions produce sharper prints but larger files. Consider what the recipient will do with the PDF before choosing your settings.

Choose the Right Page Size and Orientation

Match the PDF page size to your image aspect ratio. Landscape images look better on landscape-oriented pages, and portrait images fit naturally on portrait pages. Most conversion tools let you set this before generating the PDF. Letter size (8.5 by 11 inches) is standard in the US, while A4 is standard internationally.

Use Compression Wisely

For photographs, JPG compression inside the PDF keeps file sizes manageable with minimal visible quality loss. For documents with text or sharp edges, like scanned receipts or ID cards, PNG format preserves crispness better. Some converters offer a quality slider during the conversion process, letting you balance file size against visual fidelity.

Avoid Repeated Re-encoding

Each time an image gets converted, re-encoded, or re-saved, it can lose quality. Convert directly from the original source image whenever possible. Avoid converting an already-converted PDF back to an image and then to PDF again, as this compounds quality degradation.

Common Problems and How to Fix Them

Even with straightforward methods, a few issues come up regularly. Here are the most common problems people encounter and how to solve them.

  • Print to PDF option is missing on Windows: Open Settings, go to Apps, then Optional Features, and add Microsoft Print to PDF. It should appear in your printer list afterward.
  • PDF file size is too large: Use an online PDF compressor like ILovePDF or Smallpdf after conversion. These tools reduce file size by 50 to 70 percent with minimal quality loss.
  • Image appears stretched or distorted: Check the page size and orientation settings in the print or export dialog. Mismatched aspect ratios cause stretching.
  • iPhone pinch-to-zoom does not work: Make sure you are running iOS 13 or later. On older versions, use the Create PDF option in the Files app or a free converter app instead.
  • Online converter adds a watermark: Switch to PDF24 or ILovePDF, both of which produce clean PDFs without watermarks on their free tiers.
  • Images are in the wrong order in batch PDF: Rename your files with sequential numbers (01, 02, 03) before converting. Most tools sort alphabetically by filename.

Frequently Asked Questions

How to turn image files into a PDF?

On Windows, open the image in the Photos app, click Print, select Microsoft Print to PDF as the printer, and click Print to save. On Mac, open the image in Preview, click File then Export as PDF, and save. Both methods are built into the operating system and require no additional software.

How do I convert an image to PDF on my phone?

On iPhone, open the Photos app, tap Share, select Print, pinch outward on the preview, then tap Share again and choose Save to Files. On Android, open your gallery, tap the three dots or Share, select Print, choose Save as PDF as the printer, and save the file.

How to convert iPhone photo to PDF?

Open the photo in the Photos app, tap the Share button at the bottom left, scroll down and tap Print, then pinch outward with two fingers on the preview image to open it as a PDF. Tap the Share button again and select Save to Files to store the PDF on your device or iCloud Drive.

How do I convert a photo to a PDF for free?

The built-in methods on Windows, Mac, iPhone, and Android are all completely free and require no software downloads. You can also use free online converters like ILovePDF, Smallpdf, or PDF24, which work in any web browser without account creation.

How do I convert multiple images to one PDF?

On Windows, select all images in File Explorer, right-click, choose Print, and select Microsoft Print to PDF. On Mac, select all images in Finder, open with Preview, select all in the sidebar, then Export as PDF. On iPhone or Android, select multiple photos before using the Print to PDF method. Each image becomes a separate page in the combined PDF.

Will converting an image to PDF reduce quality?

No, converting an image to PDF does not reduce quality when you use built-in methods like Microsoft Print to PDF or Mac Preview. These tools preserve the original image resolution. To maintain maximum quality, use lossless tools like img2pdf on Linux, and avoid online converters that apply aggressive compression.

Conclusion

Knowing how to convert an image to PDF is a skill that pays off whether you are submitting a homework assignment, archiving photos, or sharing documents with colleagues. The best part is that every major platform already has the tools built in, so you never need to pay for software or deal with watermarks.

Pick the method for your device from the sections above and give it a try. For Windows users, Microsoft Print to PDF handles everything through the Photos app. Mac users have the fastest path with Preview Export as PDF. On mobile, the Print menu hides the conversion feature behind a simple gesture or dropdown. And for power users handling large batches, tools like PDF24 on Windows or ImageMagick on Linux make bulk conversion painless.

The next time someone asks you to send an image as a PDF, you will know exactly what to do in under a minute, no matter what device you are holding.

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