Free Online PDF Editor — Edit PDFs Privately, Right in Your Browser
Add text, shapes, highlights, images, and a signature to any PDF. Nothing is ever uploaded — every edit happens on your own device.
Select a PDF file
or drag and drop it anywhere in this box
A PDF editor that runs entirely on your device
PDFMaster's PDF Editor lets you mark up and edit any PDF right inside your browser. Add text, shapes, highlights, images, or custom signatures, then export a clean new file — without your document ever leaving your computer or phone.
There's no upload step, so there's nothing to wait on and nothing sitting on a server in the meantime. Open a file, mark it up, and download the result in the same tab — it works the same way on a laptop at your desk or a phone on the train.
Everything you need to mark up a PDF
Add text
Drop in labels, notes, or answers anywhere on the page, in the size and color you choose. Customize text formatting with bold, italic, and underline options.
Draw & highlight
Sketch freehand with the pen, or sweep a highlighter over important sections. Pick any shade using our color palette, custom picker, or eyedropper.
Shapes & arrows
Box something in, circle it, or point straight at it with rectangles, ellipses, lines, and arrows. Adjust stroke thickness to fit your needs.
Images & stamps
Insert your own logo, photo, or approval stamp, then crop and resize it perfectly right on the page.
Sign documents
Draw a signature, type your name using elegant cursive script fonts, or upload an image and use WASM AI to instantly remove the background.
Export instantly
Save your marked-up file as a new PDF in one tap. The original pages stay untouched underneath.
Three steps, no waiting around
Add your PDF
Choose a file or drag it into the box above. It loads straight into your browser's own memory.
Mark it up
Pick a tool from the toolbar, then click or drag on the page to add text, shapes, an image, or your signature.
Download
Tap "Download Edited PDF" to save your changes as a new file, ready to send or print.
Why edit PDFs this way
Nothing leaves your device
Your file is read and edited locally, so it's never sent to a server.
Works without an upload queue
Once the page has loaded, editing keeps working even on a slow or spotty connection.
No sign-up, no watermark
Every tool here is free to use — no account, no email, no mark left on your file.
Any device, any OS
Windows, macOS, Linux, Chromebook, Android, or iPhone — all you need is a browser.
Original quality kept
Your source pages stay untouched; edits sit on top as a sharp, searchable layer.
Fast, even on large files
Rendering happens on your own hardware, so there's no upload wait before you can start.
Common questions
Yes. Every editing tool on this page is free, with no sign-up, no watermark, and no page or file-size caps beyond what your own device can handle.
No. Your file is opened and edited using your browser's own memory. It's never sent anywhere, which also means it keeps working without an internet connection once the page has loaded.
Not yet. This tool adds new text, shapes, images, and a signature on top of your PDF. Rewriting text that's already baked into the file means rebuilding the whole page layout, which isn't something a browser can do reliably.
No. Your original pages are kept exactly as they are; edits are added as a thin new layer on top, so existing text stays sharp and searchable and the file size barely changes.
Any device with a modern browser — Windows, macOS, Linux, Chromebook, Android, or iOS. There's nothing to install.
Yes. Draw a signature with your mouse, trackpad, or finger, then drop it anywhere on the page and resize it to fit.
The custom color picker lets you select any color from a visual color palette. The eyedropper tool allows you to pick any color directly from your screen (on supported desktop browsers) to easily match existing elements or colors within your PDF.
When you upload a signature image, we use modern WebAssembly AI (WASM) to detect and remove the background directly in your browser. Since it runs completely client-side, your signature image is never sent to any server, keeping your personal data 100% private.
Yes. When you select an inserted image, a "Crop" button will appear in the toolbar options. Click it to adjust the cropping area and trim unwanted parts of your image directly on the PDF.
Need a hand?
Questions, feedback, or something not working the way it should? We read every message.
[email protected]