Why Convert Images to PDF?
Images (JPG, PNG, HEIC) aren't ideal for sharing professional documents. PDFs are:
- Universal — Open the same way on every device, every operating system
- Fixed layout — Images don't resize or reformat when sent
- Easier to combine — Multiple images become one paginated document
- Expected by institutions — Banks, employers, and government agencies typically require PDF submissions
Common use cases: scanning contracts or receipts with your phone camera, submitting photo ID with an application, combining product photos for a catalog, or archiving handwritten notes as a proper document.
Method 1: Online Converter (Fastest, Any Device)
For most people, the fastest option is an online tool that requires no software. NexTools converts up to 20 images at once, lets you reorder them, and produces a clean PDF instantly:
Open NexTools Image to PDF
Go to nextools.polsia.app/tools/image-to-pdf.html. No account needed.
Upload your images
Select or drag up to 20 JPG or PNG files. Mixed formats work fine.
Reorder pages if needed
Drag the image thumbnails into the correct page order before converting.
Convert and download
Click Convert. Your PDF downloads in seconds — one image per page, full resolution.
Convert your images to PDF right now — up to 20 images, free, no signup.
Convert Images to PDF Free →Method 2: Built-In OS Options (No Internet Required)
If you need to convert images offline or don't want to upload files to any server, both Mac and Windows have built-in options:
Mac: Preview
The fastest built-in method on Mac:
- Select your images in Finder (hold ⌘ to select multiple)
- Right-click → Open With → Preview
- In Preview, go to File → Export as PDF
This creates a PDF with each image as a separate page. The order in the PDF matches the order they were selected — sort by name, date, or manually arrange before opening.
Windows: Microsoft Print to PDF
- Select your images in File Explorer
- Right-click → Print
- Select Microsoft Print to PDF as the printer
- Adjust the page layout (landscape/portrait, fit to page)
- Click Print — save the output PDF
This works but has limitations: the images are embedded at whatever size the printer driver chooses, and there's no reordering interface. For better control, the online method is cleaner.
iPhone / iOS
iOS has a native PDF converter in the Share sheet:
- Open an image in the Photos app
- Tap Share → Print
- On the print preview, use a pinch-to-zoom-out gesture on the preview thumbnail
- This reveals the PDF — tap the Share button to save or send it
For multiple images, use the Files app or a third-party app. It's cumbersome — the online tool is usually faster on mobile too.
Android
Android doesn't have a universal built-in image-to-PDF converter. The Google Files app has basic PDF creation on some devices, but coverage varies. Easiest approach on Android: use the NexTools web tool in Chrome — it works just as well on mobile.
Image Quality in the Final PDF
The output quality depends on your original images and the converter:
- Resolution — PDFs embed images at their original resolution. A 4000×3000px photo will remain sharp even when printed. NexTools preserves original resolution.
- File size — A PDF with 10 high-resolution photos will be large (potentially 20–50MB). After conversion, compress the PDF if you need to email it or meet a size limit. Read our guide on compressing PDFs to under 1MB.
- Orientation — Landscape images are placed on landscape pages, portrait on portrait. Mixed-orientation PDFs work fine in most readers.
Tip for scanned documents: If you're photographing physical documents with your phone, the quality depends heavily on lighting and angle. Use a scanner app (Adobe Scan, Microsoft Lens, Apple's built-in document scanner) for better results — these apps auto-correct perspective and enhance contrast before you create the PDF.
Supported Image Formats
NexTools Image to PDF supports:
- JPG/JPEG — Most common format from cameras and phones
- PNG — Lossless format, common for screenshots and graphics
If you have HEIC files (from iPhone cameras), convert them to JPG first — most online tools don't support HEIC directly. On iPhone, you can change the camera format to JPG in Settings → Camera → Formats → Most Compatible.
After Converting: Next Steps
Once you have your PDF, you might need to:
- Compress it — Use NexTools PDF Compressor if the file is too large to email
- Merge it with other PDFs — Use NexTools PDF Merger to combine with other documents
- Summarize it — If it's a scanned text document, the AI PDF Summarizer can extract key points
Quick Summary
To convert images to PDF:
- Fastest (any device): Use NexTools Image to PDF — upload up to 20 images, reorder, download PDF
- Mac offline: Select images → Open in Preview → Export as PDF
- Windows offline: Select images → Print → Microsoft Print to PDF
- iPhone: Share → Print → pinch preview to get PDF export option
Convert your images to a clean, shareable PDF in seconds.
Try it Free →