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PDFill vs Pencil Project

Professional comparison and analysis to help you choose the right software solution for your needs.

PDFill icon
PDFill
Pencil Project icon
Pencil Project

PDFill vs Pencil Project: The Verdict

⚡ Summary:

PDFill: PDFill is a free PDF editing software that allows users to fill out, edit, merge, split, rearrange, encrypt, decrypt, print and save PDF documents. It has basic PDF functionality for free.

Pencil Project: Pencil Project is a free and open source GUI prototyping and mockup tool. It allows users to create wireframes and prototypes for software interfaces and websites quickly and easily, without programming knowledge.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature PDFill Pencil Project
Sugggest Score — —
Category Office & Productivity Development
Pricing Freemium Open Source

Product Overview

PDFill
PDFill

Description: PDFill is a free PDF editing software that allows users to fill out, edit, merge, split, rearrange, encrypt, decrypt, print and save PDF documents. It has basic PDF functionality for free.

Type: software

Pricing: Freemium

Pencil Project
Pencil Project

Description: Pencil Project is a free and open source GUI prototyping and mockup tool. It allows users to create wireframes and prototypes for software interfaces and websites quickly and easily, without programming knowledge.

Type: software

Pricing: Open Source

Key Features Comparison

PDFill
PDFill Features
  • Edit PDF files
  • Create PDF files
  • Combine PDF files
  • Split PDF files
  • Protect PDF with passwords
  • Convert PDF to images
  • Convert images to PDF
  • Add text, shapes, stamps to PDF
  • Redact sensitive info in PDF
  • Optical character recognition
  • Digital signatures
Pencil Project
Pencil Project Features
  • GUI prototyping
  • Wireframing
  • Mockup creation
  • Export to HTML
  • Built-in shape library
  • Bitmap image support
  • Pages and layers

Pros & Cons Analysis

PDFill
PDFill
Pros
  • Free basic functionality
  • Easy to use interface
  • Works on Windows
  • Lightweight
  • Open source
Cons
  • Limited features in free version
  • No mobile apps
  • Lacks advanced PDF editing tools
Pencil Project
Pencil Project
Pros
  • Free and open source
  • Easy to use
  • Cross-platform
  • Good for rapid prototyping
  • Large shape library
  • Active community support
Cons
  • Limited features compared to paid tools
  • Not great for high-fidelity prototypes
  • Limited export options
  • No collaborative editing features

Pricing Comparison

PDFill
PDFill
  • Freemium
Pencil Project
Pencil Project
  • Open Source

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Learn More About Each Product

PDFill
PDFill
Reviews, pricing & alternatives →
Pencil Project
Pencil Project
Reviews, pricing & alternatives →

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