ToolBrainy

Edit PDF Online Free

Add text, draw, highlight and place images on your PDF, then download, free and fully private in your browser.

Drag & drop your PDF here

or

Single PDF file · Edited in your browser

About this tool

PDF Editor lets you mark up a PDF without any software. Add text boxes, draw freehand, highlight areas and drop in images directly on the page, then save a new PDF. Your edits are drawn onto the original pages using pdf-lib while the existing content is preserved. Everything runs locally in your browser, so your document is never uploaded and stays completely private.

Whether you need to fill in a form, sign a contract, redact a detail or add a quick note before sending a document on, this free online PDF editor gives you the essentials without the cost or complexity of desktop software. Pick the text, draw, highlight or image tool, click anywhere on the page, and your change is placed exactly where you want it. You can reposition or delete anything you add until the document looks right, then export a fresh PDF that keeps every original page intact.

Because everything is handled in your browser with the open-source pdf-lib library, your file never leaves your device and nothing is stored on a server. That makes it a safe choice for sensitive paperwork such as tax forms, agreements and internal reports. It runs on Windows, macOS, Linux, Android and iOS in any modern browser, so you can edit a PDF online on your laptop or annotate one on your phone without installing an app or creating an account.

How to use

1
Upload a PDF

Drag & drop or choose a single PDF file.

2
Edit the pages

Add text, draw, highlight or place images.

3
Save & download

Export your edited PDF in one click.

Why use it

Private by design

Editing happens locally, nothing uploaded.

Text, draw & more

Add text, ink, highlights and images.

Keeps your content

Edits are layered onto the original pages.

100% free

No signup, no limits and no watermarks, ever.

Use cases

Fill in forms

Type answers onto a non-fillable PDF.

Sign & initial

Draw a signature anywhere on the page.

Mark up documents

Highlight and annotate for review.

Add a logo

Place an image or stamp on the page.

Correct typos

Cover and retype small mistakes.

Add notes

Drop comments onto reports and slides.

Frequently asked questions

What can I add to my PDF?

You can add text boxes, freehand drawing or signatures, colored highlights and images, on any page of the document.

Does it keep the original content?

Yes. Your edits are layered on top of the existing pages, the original text and images are preserved.

Can I move or delete what I added?

Yes. Switch to the Select tool to drag items around, and use Delete to remove the selected item.

Is my PDF private?

Yes. Everything runs in your browser using pdf-lib, your file is never uploaded to a server.

Is the PDF editor really free?

Yes, it is completely free with no signup, no installation and no watermarks. There are no hidden limits on how many PDFs you can edit.

Do I need to install any software?

No. The editor runs entirely in your web browser, so there is nothing to download or install. It works in any modern browser such as Chrome, Firefox, Edge and Safari.

Can I edit a PDF on my phone?

Yes. The tool works in mobile browsers, so you can add text, highlights, signatures and images to a PDF on your phone or tablet the same way you would on a desktop.

Can I edit a scanned PDF?

You can add text, highlights, drawings and images on top of a scanned PDF. It does not use OCR, so it will not convert the scanned image into selectable text, but it is perfect for signing, annotating and marking up scanned documents.

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