RunToolRunEdit PDF
Edit your PDF files.
How to Edit a PDF Online
Open your PDF
Select or drop the PDF you want to annotate — it loads page by page in your browser.
Add text and annotations
Click anywhere on a page to place text boxes, then position and style them as needed.
Save the edited PDF
Download a new PDF with your additions burned in — the original stays untouched.
What editing a PDF really means
PDF was designed as a final format — a description of where marks go on a page, not a document with paragraphs you can rewrite. There is no reflowing text, because the file does not know what a paragraph is. Changing a word does not push the rest of the line along.
So editing here means adding to the page and rearranging pages, not retyping the original text. That is the honest boundary of every browser-based PDF editor, and knowing it saves a great deal of frustration.
Additions sit on top of the page
Text you add, boxes you draw and images you place are new objects layered over the existing content. The original underneath is untouched. This is exactly right for filling in a form, signing a document, marking up a draft or covering something that should not be visible.
It also means a white box drawn over sensitive text hides it visually while the text remains in the file, extractable by anyone who selects it or opens the PDF in a text tool. If information genuinely needs to be removed, delete the page or produce a new document — do not cover it.
Page-level operations are lossless
Reordering, rotating and deleting pages work on the document's structure: the page objects are copied into a new file with their resources intact. Nothing is re-rendered and no quality is lost, so a scanned page stays exactly as sharp as it was.
This is where most real PDF work happens. Removing an internal cover sheet, putting an appendix in the right place, turning a sideways scan upright — none of these touch the content of the pages themselves.
What will not survive
Digital signatures break the moment the file changes, because a signature certifies a specific byte sequence. If a document must stay verifiably signed, edit before signing rather than after. Form fields can also lose their values when a document is rebuilt.
Encrypted files must be decrypted before they can be edited at all. A password that merely restricts printing is a different thing from one that encrypts the content — the second must be removed first, and only the document's owner should be doing that.
Running locally, and its limits
The document is rendered and rebuilt in your browser, so contracts, medical records and financial statements never reach a server. That is the main practical reason to prefer a browser editor over an upload-based service for anything private.
The trade is memory. Every page you view is rendered to a bitmap, so very long or image-heavy documents are demanding, and a hundred-page scan will feel slower than a short text file. Splitting a large document and working on the part you need is more reliable than fighting the whole thing.