How to save a PDF page as an image
Open PDF to JPG or PDF to PNG, tap the page you want in the thumbnails, press Start and download.
Pick the page
Tap the page in the thumbnails, or type its number in Pages. Only that page is converted, so you don't wait for the whole document.
Pick the format
JPG suits chats and photos. PNG suits charts and small text. Use 150 DPI for screens and 300 DPI for print.
How big the image gets
One A4 page full of text, saved as JPG at the default Quality of 90, came out at 424 KB at 150 DPI and 1.1 MB at 300 DPI. An A4 page made of one 200 DPI image, as a scan is, gave 704 KB and 2.5 MB. If a form caps uploads at 1 MB, 150 DPI fits and 300 DPI may not.