Edit PDF

Annotate PDFs — add text, draw lines, highlight areas. Download the annotated PDF. 100% private — all in your browser.

Drop a PDF file here or click to browse

Add text, draw, sign, and highlight

✅ PDF Annotated

Your annotations have been saved to the PDF.

About PDF Editor

Add annotations directly to PDF files. Works entirely in your browser — no uploads, no servers.

Text Annotations

Click anywhere to add text labels. Choose color and font size.

Freehand Drawing

Draw lines, arrows, and shapes. Great for circling important content.

Highlight Mode

Highlight important passages with translucent color overlay.

100% Private

Your PDF stays on your device. Annotations are drawn directly with pdf-lib.

📋 Common Use Cases

Review and Comment

Highlight important passages and add sticky-note comments when reviewing reports, articles, or academic papers.

Fill Out Forms Digitally

Add text to blank form fields, check boxes, and signature lines without printing the document.

Mark Up Designs

Draw arrows, circles, and freehand sketches on PDF blueprints, wireframes, or design mockups during review.

Correct Errors

Cross out mistakes and add replacement text directly on PDFs without access to the original source file.

🪜 How to Use This Tool

  1. Upload your PDF
    Drag your PDF file onto the editor area or browse to select the document you want to annotate.
  2. Select annotation tool
    Choose from text tool, highlighter, freehand draw, shape tool, or sticky notes to mark up your document.
  3. Edit and position annotations
    Click on the page to add annotations, then drag to reposition, resize, or change colors as needed.
  4. Download edited PDF
    Save your annotated PDF with all edits, highlights, and drawings embedded permanently into the document.

📚 Related Guides

Frequently Asked Questions

Is this PDF tool really free?▼
Yes. Every PDF tool on iluv.tools is completely free. No signup, no account, no payment. Everything runs in your browser.
Are my PDF files uploaded to a server?▼
No. All PDF processing happens locally in your browser using the pdf-lib and PDF.js libraries. Your files never leave your device.
Do these PDF tools work offline?▼
Basic PDF tools (merge, split, compress, rotate, sign, watermark, protect, unlock, add page numbers, edit metadata, flatten, grayscale, crop, delete pages) work completely offline after the page loads. AI-powered tools like smart compression and PDF to Word require an internet connection.
Is there a file size limit?▼
Browser-based tools handle files up to ~100MB smoothly. Larger files may be slower depending on your device. For very large PDFs, try splitting them first, processing the parts, then merging.
Can I use these on mobile?▼
Yes. All PDF tools work on mobile browsers (iOS Safari, Android Chrome). Desktop is recommended for large files, but everything is functional on mobile.