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Meet MobiPDF – formerly PDF Extra

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Welcome to the MobiPDF user guide

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Hi there! We're here to help you make the most of MobiPDF – your go-to PDF solution. Whether you're just getting started or looking to explore advanced features, you'll find everything you need in this guide.

Quick links to get you started

Below, you'll find categories that cover every aspect of MobiPDF in detail:

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Getting Started

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PDF Reading and Commenting

Explore how to view, annotate, and manage your PDFs efficiently, as well as how to make scanned files searchable using OCR (Optical Character Recognition).

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Creating PDFs

Learn how to quickly generate flawless PDFs from other file formats or simply create one from scratch.

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Editing PDFs

Dive into advanced tools for adding, removing, and editing text, images, and PDF layouts.

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Converting PDFs

Discover how to seamlessly convert your files to and from PDF with and without OCR.

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Organizing PDFs

Optimize your PDFs and achieve the perfect flow with MobiPDF’s page organization tool.

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Filling & Signing PDFs

Skill up on how to easily fill out forms, add wet signatures, and create custom PDF forms.

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Combining PDFs

Learn how to merge multiple PDFs into a single file for better navigation.

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Compressing PDFs

Find out how to significantly reduce the size of your PDF files without compromising on quality.

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Securing PDFs

Explore tools to protect your documents with passwords, digital signatures, and advanced security options like custom user permissions.

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