If you're looking to Download Photo PDF on your Chromebook laptop Then read the following guideline.

Easily convert your photos to a pdf page. Resize with precision and print directly from your iPhone. | Select your Photos. Select up to 20 photos from your gallery or iCloud. | 40 Page Sizes. Select from our database of 40 standard page sizes for printing. Add your own custom size for your printer or frame. | Custom Layout Rearrange your photos in a custom layout. Easily move photos in any part of the page. Crop your images to the desired size. | Export to PDF Export your canvas in PDF. Share it via Airdrop, email, or your contacts. Print it directly from your phone on your wireless printer.