Why convert images to PDF?
Most organizations want your documents as one PDF, not ten photos. Conversion gathers the images in order and keeps the look consistent on any device.
How to convert
Open Images to PDF and add the images, reorder them with the arrows, then choose the page size: A4 with the image fitted for printing, or "Same size as image" for maximum quality. Then download the file.
If the file gets big
High-resolution phone photos can make the file heavy. Compress it with Compress PDF before sending.
And the reverse
If you want PDF pages as pictures, use PDF to JPG and you will get one image per page inside a ZIP.