There are several free online PDF editors available that allow you to modify text within PDF documents. Adobe Acrobat offers a free online PDF editor that allows you to add text, sticky notes, and more. Smallpdf is another option that lets you edit text in your PDFs and add images, shapes, highlights, and annotations. Canva's free PDF editor is also easy to use and allows you to import PDFs, edit them, and then share as a link or compress into JPG, PNG, or back to PDF files. DocFly is another easy-to-use online editor that allows you to quickly edit PDF files in less than a minute. Additionally, Sejda is a free online PDF editor that allows you to edit 3 files per hour with files up to 200 pages or 50 MBs. The files you upload to edit are automatically deleted after 2 hours.