PDF Editor — Edit, Sign & Annotate PDFs Online
Edit PDF documents online for free. Add text, signatures, images, shapes, and annotations. 100% private, works offline in your browser.
Edit Your PDF Documents
Add text, signatures, images, and annotations to your PDF. All processing happens locally in your browser.
Your Privacy is Our Priority
Unlike other online tools, PDFaiGen processes your files directly in your browser. No file uploads, no server data breaches.
Zero Uploads
Files never leave your device. All processing happens locally in your browser memory.
End-to-End Private
Since no data is sent to any server, your sensitive documents remain completely private.
Works Offline
Once loaded, our tools work without an internet connection. No data usage required.
How to Edit PDF
Simple, fast, and secure. Get your file processed in 3 easy steps.
Upload PDF
Select or drag and drop your PDF file to start editing.
Edit & Annotate
Add text, signatures, images, shapes, and annotations using the toolbar.
Download
Save your edited PDF with all changes applied.
Key Features
Why Choose PDFaiGen?
We are building the future of document processing — focusing on privacy, speed, and design.
100% Privacy Guaranteed
No cloud uploads. Your files are processed entirely on your device using WebAssembly technology.
Lightning Fast
Zero upload time. Zero download time. Instant processing powered by your own hardware.
Easy to Use
Simple drag-and-drop interfaces designed for efficiency. No accounts or sign-ups required.
Common Use Cases
See how others are using this tool to save time and improve workflows.
Form Filling
Fill out PDF forms with text fields and checkboxes.
Document Signing
Add your signature to contracts, agreements, and official documents.
Annotations & Notes
Add comments, highlights, and notes for review or collaboration.
Image Insertion
Add logos, stamps, or images to personalize documents.
Text Editing
Add new text blocks anywhere on your PDF pages.
Quick Markups
Draw arrows, shapes, and highlights to emphasize content.
Complete Guide: How to Edit PDF Documents
Our PDF editor allows you to add text, images, shapes, signatures, and annotations directly to your PDF files. Perfect for filling forms, signing documents, or adding notes without printing.
Upload Your PDF
Select the PDF file you want to edit. The document opens in the editor with all pages visible.
Select Editing Tool
Choose from the toolbar: Text (to add text boxes), Draw (to sketch or highlight), Image (to insert pictures), or Signature (to sign the document).
Add Content to Pages
Click anywhere on the PDF to add your selected element. Drag to resize, rotate, or reposition. Use the properties panel to change colors, fonts, and styles.
Edit Multiple Pages
Navigate between pages using the page selector. Add content to as many pages as needed.
Save Edited PDF
Click 'Save PDF' to generate the final document with all your edits embedded. Download and use immediately.
Pro Tips
- Use the 'Undo' button (Ctrl+Z) if you make a mistake.
- Hold Shift while resizing to maintain aspect ratio of images and shapes.
- Save frequently when making extensive edits to avoid losing work.
Common Issues
Can't add text?
Ensure the 'Text' tool is selected from the toolbar. Click once on the page to create a text box, then start typing.
Edits not saving?
Click the 'Save PDF' button to generate the final file. Simply adding content doesn't automatically save—you must explicitly save the document.
Why We are Better
See how PDFaiGen compares to traditional online PDF tools.
PDF Editor — Edit, Sign & Annotate PDFs Online
Edit PDF documents online for free. Add text, signatures, images, shapes, and annotations. 100% private, works offline in your browser.
No credit card required • No installation • 100% Private