How to Convert Images to PDF
Converting images to PDF is one of the most common reasons people reach for a PDF tool, usually to combine several photos of a document, like a multi-page contract photographed with a phone, into a single shareable file.
Getting page order right
When you upload multiple images, most tools will order them alphabetically by filename by default, which rarely matches the order you actually photographed the pages in. Rename your files with a number prefix (01, 02, 03) before uploading, or use a tool that lets you drag to reorder pages before generating the PDF.
Matching page size to your content
Photos of documents are usually best converted using a page size that matches standard paper, like A4 or Letter, so the resulting PDF prints and displays the way people expect. Photos meant to be viewed as images, like a portfolio, often look better if the page size matches the image's own aspect ratio instead.
Improving photo quality before converting
If you're photographing paper documents with a phone camera, take the photo in good, even lighting and hold the camera as directly overhead as possible to avoid the perspective distortion that makes text harder to read. A tool with an auto-crop or auto-straighten feature for scanned photos can fix minor issues, but starting with a clear photo saves a step.
One image per page vs. combined layouts
Most conversion tools default to one image per page. If you want to fit two smaller images on a single page, like receipts, check whether your tool supports a grid layout option, since not all of them do, and you may need a separate layout step afterward.
