You have taken photos of a whiteboard, scanned a multi-page form on your phone, or collected a series of images that need to be submitted as a single document. Converting images to PDF lets you combine them into one clean, universally shareable file — no software installation required. Here is how to do it in minutes.
When to convert images to PDF
- Submitting multi-page documents — Many platforms (government portals, HR systems, application forms) only accept PDF. A multi-page scanned document photographed on a phone needs to be combined into one PDF.
- Creating portfolios — Designers, photographers, and artists can combine images of their work into a single PDF portfolio for email or download.
- Compiling receipts and invoices — Expense reports are easier to submit as one PDF containing all photos of receipts rather than a folder of images.
- Sending printable content — Images have unpredictable print sizing behaviour. A PDF with defined page dimensions prints exactly as intended.
- Archiving image collections — A PDF is a better archival format for multi-page image collections than a loose folder of JPGs.
Step-by-step: converting images to PDF with ToolsGravity
- Open the Image to PDF Converter and upload your images. JPG, PNG, WebP, and TIFF are all supported.
- Order your images. Drag to reorder them — the order here determines the page order in the final PDF.
- Choose the page size (A4, Letter, or fit-to-image) and page orientation (portrait or landscape).
- Set the image positioning on the page: centred with margins (standard for document scans), full-page bleed (for portfolio images), or custom padding.
- Click Convert to PDF. The tool generates a PDF with one image per page.
- Download the PDF. Open it to verify page order and image quality. If the file is large, run it through the PDF Compressor to reduce size.
Page size options explained
| Page size option | Dimensions | Best for |
|---|
| A4 | 210 × 297 mm | Standard documents in most of the world |
| US Letter | 8.5 × 11 inches | US documents, North America |
| Fit to image | Matches image dimensions | Portfolios, exact image archiving |
| A3 | 297 × 420 mm | Large-format prints, posters |
Tips for clean multi-image PDFs
- Standardise image dimensions before converting. If your images are different sizes, they will appear at different scales on the page. Crop and resize them to the same dimensions using the Image Resizer first.
- Use consistent orientation. Mixing portrait and landscape images creates awkward page rotations. Decide on one orientation and crop all images to match.
- High resolution for text-bearing images. If your images contain text (scanned forms, whiteboards), use the highest available resolution to keep text legible in the PDF.
- Compress large images before conversion. Run very large photos through the Image Compressor first — this keeps the final PDF to a manageable size without needing to compress the PDF afterwards.
Image-to-PDF vs PDF Merger: which to use?
Use the Image to PDF Converter when you are starting with image files (JPG, PNG, etc.) and want to create a PDF from them. Use the PDF Merger when you already have multiple PDF files and want to combine them into one. If you have a mix of images and PDFs, convert the images to PDF first, then merge all the PDFs together.
Summary
Converting images to PDF is the go-to solution for submitting multi-page scans, compiling portfolios, and creating print-ready documents from photos. The ToolsGravity Image to PDF Converter handles multiple files at once, lets you set page size and order, and generates a properly formatted PDF in seconds — no software needed and no files stored on any server.