Edit PDF (Sign & Annotate)
Free online PDF editor — add signatures, checkmarks, and annotations to any PDF. No install, no signup required.
How to Use
- Upload PDF: Upload your PDF file
- Select Tool: Choose from check, X, circle, signature, draw, or text
- Add Annotations: Click to add at desired location
- Save: Download edited PDF
Drop PDF file here
Supported format: .pdf (Max 100MB)
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Why iTool is Great
- Fast: Processes right on your device
- Free: Unlimited use without signup
- Secure: Files never leave your browser
- 5 Annotation Tools: Check, X, signature, draw, text (hand tool for panning)
- Easy Editing: Drag and resize to adjust size and position
- Color Options: 14 preset colors + custom color picker
- Text Formatting: Choose font, size, bold, italic, underline
- Draw Options: Adjust line width from 1~20px
- Zoom: 50%~200% range with 10% steps
File Size Limits
- PDF File Size: Max 100MB
When to Use
- Sign Contracts: Add your signature directly to PDF contracts
- Checklists: Mark items with check symbols
- Review Docs: Add notes with text
- Fill Forms: Type info into PDF forms
FAQ
How do I add a signature?
Click the signature button, then draw or upload an image. Drag and resize to adjust position and size.
How do I change colors?
Click the color button (round circle) to choose from 14 presets or pick a custom color. Selected color applies to all new elements.
How do I change text formatting?
Select the text tool to see options at the top. Choose font (Nanum Gothic/Nanum Myeongjo/Times New Roman), size (8~72), bold (B), italic (I), or underline (U).
Can I adjust line width?
Yes! Select the draw tool to see line width options. Use thin/medium/thick buttons or slider (1~20px).
Can I delete mistakes?
Yes! Click an element with the select tool, then press the delete button or Delete key.
How do I zoom?
Use +/- buttons to zoom in 10% steps (50%~200%). Reset button returns to 100%, fit width adjusts to screen. Drag with hand tool to pan.
Can I edit multi-page PDFs?
Yes! Use page navigation buttons (◀ ▶) to move between pages. Each page can be edited independently.
Is my PDF sent anywhere?
No! All work happens in your browser. Your PDF never leaves your device.