Use free online PDF editors like Smallpdf, iLovePDF, or PDFescape
Open the PDF in Google Docs and edit the text
Use LibreOffice Draw to modify PDF content
Convert the PDF to Word with a free converter, edit it, then save it back as PDF
Use Microsoft Edge or Adobe Acrobat Reader for simple annotations and form filling
Add comments, highlights, and signatures with free PDF annotation tools
Use open-source software like PDFsam Basic for splitting and merging pages
Edit scanned PDFs with free OCR tools before making changes
Use browser-based PDF editors for quick text and image edits
Save the edited file as a new PDF after making changes