Edit PDF – Modify PDF Files Online

在线编辑PDF – 免费PDF编辑器 Edit PDF

Edit PDF files online for free – add text, images, shapes, highlights, and annotations directly in your browser. No installation or registration needed. Edit PDF online: add text, images, and annotations easily.

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Professional PDF Editor in Your Browser

Edit PDF files online with our professional-grade editor. Add text, insert images, draw shapes, highlight content, and annotate documents directly in your browser. No software installation required – works on Windows, macOS, Linux, and mobile devices.

  • Add and edit text anywhere on the PDF with customizable fonts, sizes, and colors
  • Insert images, logos, and signatures into your PDF documents
  • Draw shapes, arrows, and freehand annotations with multiple color options
  • Highlight important text with customizable colors and opacity levels

Private and Secure Processing

Your PDF documents are processed entirely in your browser using secure local technology. This means your files never leave your device. There is no risk of file leakage or unauthorized access to your sensitive documents.

  • 100% local processing in the browser – no upload to servers
  • Works without internet after initial page load
  • Guaranteed zero data retention – files never stored

Complete Editing Features

Our PDF editor provides all the tools you need to modify your documents professionally. From basic text editing to advanced annotations and shape drawing.

  • Rich text editing with font selection, sizing, colors, and alignment
  • Insert rectangles, circles, arrows, and lines with custom styling
  • Freehand drawing tool with adjustable brush size and color
  • Text highlighting with multiple colors and transparency control
  • Layer management – bring objects to front or send to back
  • Undo and redo functionality for all editing operations

Works on All Devices

Use our PDF editor on any device with a modern browser. No installation required, completely cross-platform compatible.

  • Full-featured editing on Windows, macOS, and Linux
  • Touch-friendly interface for tablets and smartphones
  • Works in Chrome, Firefox, Safari, Edge, and Opera

Popular Use Cases

Our PDF editor is used by professionals and individuals worldwide for various document editing needs.

  • Fill out and edit PDF forms without printing
  • Add signatures and annotations to contracts and agreements
  • Insert charts, images, and comments into business reports
  • Highlight and annotate study materials and research papers
  • Update and modify PDF resumes and CVs

Tips for Best Results

Follow these best practices to get the most out of our PDF editor.

  • Use high-quality PDFs for better editing precision
  • Select text tool and click where you want to add text
  • Use layer ordering to arrange overlapping elements
  • Download your edited PDF immediately after finishing

常见问题

编辑 PDF 文件是免费的吗？

是的，DonePDF 上的所有 PDF 编辑工具都是免费的。

无需安装软件即可在线编辑 PDF 吗？

是的，您可以直接在浏览器中编辑 PDF 文件，无需安装任何软件。

提供哪些 PDF 编辑功能？

您可以编辑文本和页面、旋转页面、合并或拆分 PDF，并轻松管理 PDF 结构。

What editing features are available?

You can add text, insert images, draw shapes and freehand annotations, highlight text, add arrows, and more. All text is customizable with different fonts, sizes, colors, and alignment options.

Can I edit existing text in the PDF?

Our editor adds a new text layer over the existing PDF. While you cannot directly edit the original PDF text (which requires OCR technology), you can cover existing text with white rectangles and add new text on top, achieving the same visual result.

What file formats are supported?

We support standard PDF files. For images, you can insert JPG, PNG, and WEBP formats into your PDF. The output is always a standard PDF file compatible with all PDF readers.

Is there a file size limit?

The tool supports PDF files up to 50 MB and 200 pages. For larger files, consider using our Compress PDF tool first, then edit the compressed file.

Can I use this on my mobile device?

Yes, our PDF editor is fully responsive and works on smartphones and tablets. The touch-friendly interface makes it easy to edit PDFs on the go.

Does it support Arabic and RTL languages?

Yes, our editor supports Arabic and other right-to-left languages. You can add RTL text, and the interface itself supports Arabic language for all tool labels and instructions.

How do I save my edited PDF?

Click the "Download PDF" button in the bottom toolbar. Your edited PDF will be saved to your device immediately. No waiting, no email required.

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