How to edit a PDF
Choose the PDF and the page, then pick what to add. Text: type it, choose its size and color, and tap the page where it goes. Highlight: drag across the words. Pen: draw or write with a finger, pen or mouse. White-out: drag over what should not show, then type the correction on top.
Each change shows on the page as you make it and is listed under it, where it can be removed. Saving draws the changes onto the pages and copies the rest of the file as it is; a page stored sideways gets them the way you see it.
Worked example
A printed order form with no fields: on page 1, type the name and the date at 12 pt beside their lines, highlight the delivery address, white out the old phone number and type the new one over it.
Before you rely on the result
One PDF of up to 200 MB at a time. This adds to the page; it does not change the text already in it, so to correct a word, white it out and type over it. White-out only hides: the covered text stays in the file and can still be copied, so it does not remove confidential details. Text in letters outside the PDF's built-in font, such as Greek, Hebrew or Hindi, is added as a picture of the text and cannot be selected. A PDF locked with a password has to be unlocked first. Nothing is uploaded.
Cite this page
ToolOctopus. “Edit a PDF.” Updated 2026-10-13. https://tooloctopus.com/edit-pdf.
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