How To Annotate PDF Online?
Easy-to-use PDF software
Is there a PDF editor with annotation features for Android and iOS?
I'm writing this answer assuming you want to create a PDF from some documents you clicked a picture of. You can opt for any of the popular document scanning applications like CamScanner (it's back on play store so we can safely assume it's not harmful anymore), Add Notes To Pdf.online Scan etc. All these applications have the ability to create PDF of the documents scanned through it. Hope this helps Cheers..!!
Annotate PDF: All You Need to Know
UPDATE: Thank you for the question.
Submit important papers on the go with the number one online document management solution. Use our web-based app to edit your PDFs without effort. We provide our customers with an array of up-to-date tools accessible from any Internet-connected device. Upload your PDF document to the editor. Browse for a file on your device or add it from an online location. Insert text, images, fillable fields, add or remove pages, sign your PDFs electronically, all without leaving your desk.