PDF problems tend to show up in clusters - you need to combine a few files, then one of them is sideways, then the whole thing needs a password before you send it. Here's a rundown organized by task rather than by tool name, since that's usually how the problem actually presents itself.

Combining and organizing pages

Merging multiple PDFs into one, reordering pages, rotating a page that scanned in sideways, and deleting pages you don't need are all page-management tasks rather than conversions - our Merge PDF handles combining files, and Organize PDF covers reordering, rotating, and deleting pages with a visual drag-and-drop sorter, so you can see the result before you commit to it.

Pulling specific pages out

If you only need one page out of a longer document, our Bulk PDF Page Remover works by removing every page except the one you want to keep, which gets you to the same result as a dedicated "extract" tool.

Converting to and from PDF

PDF to Word and Word to PDF cover that direction, PDF to JPG and Image to PDF cover images (useful for turning a phone-scanned document straight into a PDF), and Bank Statement Converter handles PDF-to-Excel specifically for financial statements with tabular data.

Protecting and unprotecting a file

Protect PDF locks a document with a password before you send it somewhere sensitive, works the same way on a Mac as on Windows since it all runs in your browser, and Unlock PDF removes a password you've already set once you no longer need it there.

Shrinking file size

Compress PDF covers getting a large PDF down to something an email attachment limit or upload portal will accept - works the same from an iPhone or Android browser as from a desktop.

Adding a watermark or a signature

Add Watermark to PDF stamps text across a document to protect it from being passed off as someone else's, and our Signature Generator creates a signature image you can drop onto a signature line without printing anything.

A note on editing text inside a PDF

True in-place text editing (changing a word in the middle of a paragraph without Adobe Acrobat) is a genuinely harder problem than the tasks above, since PDFs don't store text the way a word processor does - for that specific need, converting to Word first, editing there, and converting back is usually the more reliable path than trying to edit the PDF directly.