How to Convert Images to PDF Online for Free (JPG, PNG, WebP)

Need to send photos as a single professional document? Converting images to PDF is the cleanest way to package multiple photos, scanned pages, or screenshots into a format that anyone can open on any device. No software required.

Why Convert Images to PDF?

Images and PDFs each have their strengths, but when sharing multiple images or presenting work professionally, PDF has several key advantages:

• Single file for multiple images: Instead of attaching 10 separate JPG files to an email, combine them into one clean PDF.
• Universal compatibility: PDF renders identically on Windows, Mac, iOS, and Android — no app required. Images may display differently across devices.
• Document submission requirements: Many institutions (universities, government agencies, businesses) only accept documents in PDF format.
• Portfolios and presentations: Combining photos, screenshots, and mockups into a PDF portfolio is more professional than a zip of image files.
• Scanning workflow: If you photograph document pages with your phone camera, converting them to PDF creates a proper scanned document.
• Preserves quality: Unlike some messaging apps that compress images, PDFs preserve the original image quality.

Supported Formats

The SimplyToolbox Image to PDF Converter supports the most common image formats:

• JPG / JPEG: The standard format for photographs. Best for converting photos, scanned documents, and camera images.
• PNG: Ideal for screenshots, diagrams, and graphics with transparency. Transparency is converted to a white background in the PDF.
• WebP: Google's modern image format. Converts cleanly to PDF with quality preserved.

Step-by-Step: Convert Images to PDF

1. Open the Image to PDF Converter.
2. Upload your images. You can select multiple files at once. Drag and drop works too.
3. Arrange the images in the order you want them to appear in the PDF. Drag to reorder.
4. Choose the page size. A4 is standard for business documents; Letter is the US standard. You can also fit each image to its own page at original dimensions.
5. Choose the page orientation — portrait (vertical) or landscape (horizontal).
6. Click "Convert to PDF" and download the result. The processing happens in your browser — no server upload required.

Page Size Options: A4 vs. Letter

Choosing the right page size depends on your audience:

• A4 (210 × 297 mm): The international standard used throughout Europe, Asia, and most of the world. Use this as your default unless you specifically need Letter format.
• Letter (8.5 × 11 inches): The standard in the United States and Canada. Use this for documents intended for US recipients or US-based printers.
• Original image size: Each page matches the pixel dimensions of the image exactly. Best for portfolios where you want no cropping or scaling.

Tips for the Best PDF Quality

• Use high-resolution source images. For a printable PDF, start with images of at least 150 DPI (dots per inch). 300 DPI is ideal for professional print quality.
• Compress images before converting if the PDF file size is too large. Use the Image Compressor first, then convert to PDF.
• Straighten scanned pages. If you photographed document pages by hand, they may be slightly tilted. Straighten them using an image editor before converting to PDF for a cleaner result.
• Name your files before uploading. Files are often sorted alphabetically on upload, so naming them "01.jpg", "02.jpg" ensures they arrive in the correct order.