Is there a file size limit for editing PDFs?

No. AziPDF renders and edits PDFs directly in your browser with no server-side restrictions, so most devices comfortably handle hundreds of pages and large files.

Can I edit PDF files on mobile devices?

Yes. AziPDF works on Android phones, iPhones, tablets, laptops, and desktops straight from the browser — no app install required.

Edit PDF file

Add shapes, annotations, signatures, highlights, and redactions to your PDF.

or drop PDF file here

How to do

✦

3 quick steps to edit your PDF.

Upload your PDF

Drag and drop your PDF, or click to select it. The file opens directly in your browser — nothing is uploaded to a server.

Add shapes, text, and annotations

Draw shapes, freehand lines, highlights, or text boxes from the bottom toolbar. A properties bar lets you set color, stroke width, and opacity before drawing.

Download your edited PDF

Undo or redo any change, then download the edited copy instantly — your original file stays untouched.

FAQs

✦

Answers about editing PDFs securely online.

Yes. AziPDF is a browser-based PDF editor that processes files locally on your device. PDFs are never uploaded to external servers, making PDF editing more private and secure.

Talk with the AziPDF AI Voice Assistant using voice or text commands. Simply describe your task, and the AI can merge, split, compress, convert, edit, rotate, and chat with PDFs for you.

You can add shapes (rectangle, circle, line, arrow), freehand drawings, text annotations, highlights, underlines, strikethroughs, and redaction boxes.

Use the zoom controls in the bottom toolbar, or hold Ctrl (⌘ on Mac) and scroll your mouse wheel over the document to zoom in and out around the cursor.

Yes. Switch to Redact mode in the bottom toolbar to draw opaque boxes over sensitive content or redact selected text, then apply to permanently remove it.

Yes. Before downloading, you can undo (Ctrl+Z) and redo (Ctrl+Y) any changes to your annotations and drawings.

Pick a tool (highlight, pen, shape, etc.) and a properties bar appears above the toolbar with color swatches, stroke width, and opacity. Set them before drawing and every new annotation uses those values.

Yes. Click the search icon in the bottom toolbar (or press Ctrl+F) and type your query — matches are highlighted on the page so you can jump straight to them.

There are no fixed server-side limits. Performance depends on your PDF size, browser, and device memory because editing happens locally.

No. AziPDF creates an edited copy of your PDF while keeping your original document unchanged.

Yes. AziPDF works on phones, tablets, laptops, and desktops using modern web browsers.