PDF Expert 是一款功能强大的 PDF 查看和编辑工具，适用于 macOS 和 iOS 平台。以下是 PDF Expert 的主要介绍和特性：
- PDF 查看和注释：PDF Expert 提供了丰富的功能来浏览和查看 PDF 文件。你可以放大、缩小、滚动、旋转页面，并且可以进行标注、批注、高亮、下划线、划线等操作来突出显示重要内容。
- PDF 编辑和修改：PDF Expert 允许你对 PDF 文件进行编辑和修改。你可以添加、删除、重新排列页面，插入文本、图像和链接，修改文本样式和字体，调整页面的尺寸和方向等。
- 表单填写和签名：PDF Expert 提供了便捷的表单填写和签名功能。你可以填写表单字段、选择选项、添加复选框、单选按钮等。此外，你还可以在 PDF 文件上添加手写签名或导入电子签名来进行签署。
- 文件管理和云同步：PDF Expert 具有强大的文件管理功能，你可以创建文件夹、重命名、复制、移动和删除文件。它还支持与云存储服务（如 iCloud Drive、Dropbox、Google Drive、OneDrive 等）的同步，方便你在不同设备上访问和管理 PDF 文件。
- 密码保护和安全性：PDF Expert 允许你为 PDF 文件设置密码，以保护敏感内容的安全性。你可以设置打开密码、权限密码以及限制打印、复制、编辑等操作，确保只有授权用户可以访问和修改文件。
- 文档批注和协作：PDF Expert 支持多用户协作和文档批注功能。你可以与他人共享 PDF 文件并进行实时注释、讨论和反馈，提高团队合作的效率。
- 搜索和导航：PDF Expert 提供快速搜索和导航功能，使你可以轻松定位和跳转到特定页面、书签、批注和关键字。
- 文件导出和分享：PDF Expert 允许你将 PDF 文件导出为其他格式，如文本、图像、Microsoft Office 文档等。此外，你还可以通过电子邮件、消息、AirDrop 等方式与他人分享 PDF 文件。
PDF Expert 提供了广泛的功能和便捷的界面，使你能够高效地处理和管理 PDF 文件。无论是个人使用还是团队协作，它都是一款非常实用的工具。
PDF Expert is the best way to edit PDF text, images, links and outlines. Fixing a typo or changing a logo in a contract, or updating your CV is now a matter of a few seconds.
Fast, robust and beautiful PDF editor for your Mac, iPhone and iPad.
“PDF Expert 2 review: Goodbye Preview, hello affordable PDF editing on Mac” – Macworld.
“App of the Year” 2015 Runner-up by Apple.
“PDF Expert puts Adobe Acrobat to shame” – Cult of Mac.
Read, annotate and edit PDFs like never before!
Slick and Fast
From the first document, PDF Expert springs into action with smooth scrolling and fast search. PDFs open instantly, whether they are just small attachments or 2000-page reports.
Robust and Beautiful
When it’s time to edit, all the great tools you need are easy to find and just a click away. PDF Expert’s quick annotations, easy form filling, and powerful file merging will chew through your work in record time.
Edit – Seamlessly edit PDF text, adjust or replace images, add links to text and edit outlines.
Read – An award-winning, lightning-fast, and tabbed document viewer will get you through multiple PDFs faster than ever.
Annotate – Classic tools and unique innovations enable you to highlight, note, and instruct with just a click.
Merge – Combine multiple documents into a new PDF, or borrow individual pages.
Sign – Create multiple signatures for every situation and sign on the line with a single click.
Fill Out – Avoid your printer with smart tools for filling forms that save you both paper and time.
Robust File Sharing
You don’t work in a bubble, and neither does PDF Expert. When it’s time to send documents to clients, coworkers, and everyone in between, PDF Expert has top-notch support for your Mac’s system-wide share sheet and other apps. If an app accepts PDFs, PDF Expert can get it there.
You can also password protect sensitive documents before sharing them.
PDF on your Mac, iPhone and iPad
Work across Mac, iPad, and iPhone. Use Readdle Transfer features to seamlessly switch devices in the middle of a document. PDF Expert is there with you.
