How to edit a PDF for free online
Need to fill in a form, add a note, or mark up a PDF? Here's how to edit a PDF for free in your browser — without creating an account or uploading the file anywhere.
- Open the Edit PDF tool. Open the free Edit PDF tool — it loads the document in your browser.
- Add your PDF. Drop in the file. It stays on your device.
- Add text or annotations. Click to add text boxes, notes or marks where you need them.
- Download. Save the edited PDF locally — no watermark.
What browser-based PDF editing actually does
It helps to know what is happening under the hood, because it explains both the strengths and the one real limitation. The Edit PDF tool renders your document page by page with PDF.js, lets you add text boxes and freehand drawing on top, then writes a new PDF with those marks burned into the pages.
That means you are adding a layer over the page, not rewriting the document's existing text. For signing, filling and marking up, that is exactly what you want. If you need to retype a paragraph that is already in the PDF and have the text reflow around it, no browser tool will do that well — you want the original file, or a text extraction first.
Which job you actually have
“Edit a PDF” covers several different tasks. Picking the right one saves a lot of time:
| What you want to do | Right approach | Tool |
|---|---|---|
| Sign or initial a document | Draw on top of the page | Edit PDF |
| Fill a form with no fillable fields | Add text boxes over the blanks | Edit PDF |
| Mark up a proof for someone else | Add notes and drawings | Edit PDF |
| Rewrite existing paragraphs | Pull the text out first, then edit it | PDF to Word |
| Reorder, remove or combine pages | Page operations, not editing | Merge / Split |
| Add a page number or watermark to every page | A dedicated batch tool | Page Numbers / Watermark |
Why nothing is uploaded
The whole process runs inside the page. PDF.js draws your document to a canvas in your own browser and pdf-lib writes the new file there too, so the PDF never travels to a server — not ours, not anyone's. That matters for contracts, medical forms, invoices and anything else you would not email to a stranger. It also means the tool keeps working with no network once the page has loaded.
The practical trade is that your device does the work, so a very large document is limited by your own memory rather than by a server.
Getting a clean result
- Drawing is much easier with a touchscreen or stylus. A signature drawn with a mouse usually looks like one. On a phone or tablet, use a finger.
- Zoom in before you sign. Marks are placed where you draw them, so working at a larger zoom gives you finer control.
- Check every page before saving. Once the file is written, your text and drawings are part of the page and cannot be dragged around again.
- Keep the original. Save the edited copy under a new name so you can start over if a mark lands in the wrong place.
FAQ
Can I fill out a PDF form with this?
Yes — add text boxes over the form fields and type your answers, then download the completed PDF.
Is the edited file uploaded?
No. Editing happens entirely in your browser, so the document never leaves your machine.
Can I edit text that is already in the PDF?
No. The tool adds text and drawings on top of the page rather than rewriting the document's existing text layer, so existing paragraphs cannot be retyped or reflowed. To change wording, extract the text with PDF to Word first, edit it there, and rebuild the document.
Does it work on a scanned document?
Yes. Because you are drawing on top of the page, it makes no difference whether the page is real text or a scanned image. Signing and filling a scanned form works exactly the same.
How many times can I save per day?
Five. The limit is counted in your browser and resets at midnight UTC, and it is checked when you save rather than while you work, so you can edit as much as you like and save five finished files a day.
Will there be a watermark on the file?
No. The downloaded PDF contains your document and your own marks, with nothing added.
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