Turning photos of paper into a proper PDF
You do not need a scanner for most everyday paperwork: a signed form, a receipt, a letter, or pages from a book can be photographed with a phone and turned into a PDF. Scan to PDF takes those photos or scanned images and assembles them into one tidy document.
Options for the pages
Add your images (JPG, PNG, or WebP), then choose a page size — A4, US Letter, or the original size of each image. For A4 and Letter you can choose how the image fills the page: fit (the whole image visible, with white space if the shapes differ), fill (the page is covered, and some of the image may be cropped), or stretch (the image is stretched to the page, which can distort it). Set a margin or none, and optionally convert to grayscale, which makes a document scan look cleaner and keeps the file small.
Each image becomes one page, in the order you added them. The work happens in your browser, so your images are not uploaded.
Getting good scans from a phone
On a phone, your browser’s file picker usually offers “Take Photo”, so you can photograph each page and add it straight away. Good results come from good photos: lay the page flat on a plain, contrasting surface, use even light without shadows, hold the phone parallel to the page, and fill the frame with the page. Photograph in portrait for portrait pages.
Scan to PDF versus JPG to PDF
JPG to PDF makes each page exactly the size of the image’s pixels, which can produce unusually large pages. Scan to PDF puts images onto standard paper sizes with margins, which suits documents you will print or submit. After converting, use Compress PDF to reduce the size, and OCR PDF to make the text searchable. This tool does not detect page edges or straighten photos automatically.