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Processed locally in browser

PDF Editor

Add text annotations, shapes, and markings directly to your document in your browser.

Drop your PDF here to open the visual editor

Add text annotations, draw shapes, highlight, reorder pages, and export

Allocated in RAM•Buy me a coffee

Vector Annotations

Add text, highlighters, geometric shapes, lines, and freehand drawings with zero rasterization.

Full Page Management

Rotate, duplicate, delete, and reorder pages seamlessly alongside visual canvas editing.

100% Client-Side Privacy

Documents are processed directly in browser memory. Zero cloud transmission or server storage.

Quick Guide

How to Use PDF Editor

01

Open Document

Load your PDF into the visual editor.

02

Annotate

Add notes, highlights, or markings.

03

Export

Save your edited document.

Key Capabilities

Interactive canvas annotation tools
Draw shapes, text boxes, and highlights
Burn annotations directly into the output PDF
Isolated environment with zero advertising clutter

Local Execution

Layers an interactive canvas over rendered PDF pages locally in your browser and compiles visual modifications back into the PDF content stream.

Helpful Tips
  • •Use zoom controls for detailed text placements.
  • •Editing existing complex vector text layouts requires desktop publishing software; this tool focuses on visual annotations.
HTML5 Canvas Vector Overlay & pdf-lib Content Injection

Non-Destructive Annotation Architecture

Zero Rasterization of Underlying Pages

Many online editors rasterize (convert to flat images) entire PDF pages, degrading typography sharpness. PDFSimplify keeps the original PDF vectors untouched and injects annotations as standard PDF content streams.

Coordinate Precision Across Rotations

Annotations are mapped accurately regardless of whether individual pages have native 90°, 180°, or 270° rotation metadata, ensuring stamps and text appear exactly where intended.

Multi-Layer Editing

Add freehand drawings, rectangle highlights, text notes, and signatures with full undo/redo history and layer reordering before final export.

Technical Notes
  • •Original vector paths and high-resolution images are preserved during editing.
  • •Signatures and drawings are rendered as vector paths for crisp print output.
  • •Saving generates a clean PDF without uploading document content to external servers.

Frequently Asked Questions

Is this an Adobe Acrobat replacement?↓

No. PDFSimplify provides lightweight annotations and additions without claiming to replace full enterprise desktop publishing suites.

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