Design Principles
An open source collection of design principles and methods
LightPDF
A free, simple PDF toolkit for Windows, Mac, Android and iOS
Updated February 2026
| Design Principles | LightPDF | |
|---|---|---|
| Rating | 4.0★ | 5.0★ |
| Reviews | 1 | 11 |
| Pros | 0 | 20 |
| FactScore™ | 12 | 54 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Design Principles — Pros
No unique pros listedBoth tools — Pros
—Only in LightPDF — Pros
Conversion tools Editing tools Intuitive interface Fast performance High-quality output AI-powered features Annotation tools Excellent customer support OCR support Secure file processing Batch processing Free tier Multi-platform support Wide range of file formats Document management No registration required Collaboration capabilities E-signatures Fillable PDF forms Password protectionOnly in Design Principles — Cons
—Both tools — Cons
—Only in LightPDF — Cons
—Details
| Design Principles | LightPDF | |
|---|---|---|
| Categories | Design & Creative, Interface design tools, Design resources | Productivity, Design & Creative |
| Platforms | Web | Web · iOS · Android |
| Became Popular | December 12, 2017 | January 24, 2018 |
| Website | principles.design | lightpdf.com |
Who Should Pick Which?
Choose Design Principles if...
- No unique pros listed
Choose LightPDF if...
- Conversion tools
- Editing tools
- Intuitive interface
With a FactScore™ of 12 vs 54, LightPDF leads in community reception. Design Principles uniquely offers No unique pros listed, while LightPDF stands out for Conversion tools and Editing tools.
What Users Say
Design Principles
Very organized content, useful for designers to learn in one place
LightPDF
Thank you so much, LightPDF is doing wonders!
I've been using LightPDF recently and am impressed with all the tools it offers for working with PDF files. This free and secure platform has features that go far beyond the basics: from conversion...
nmatched in its ability to edit PDFs, allowing you to modify text, images, and layouts seamlessly. Excel files can be converted to PDFs and vice versa, retaining full formatting, including tables a...
Related Comparisons
Frequently Asked Questions
Which is better, Design Principles or LightPDF?
Based on FactScore™, LightPDF leads with a score of 54 vs 12. LightPDF has a higher rating of 5.0★ compared to 4.0★.
What are the pros of Design Principles compared to LightPDF?
Design Principles uniquely offers: No unique pros listed.
What are the pros of LightPDF compared to Design Principles?
LightPDF uniquely offers: Conversion tools, Editing tools, Intuitive interface, Fast performance, High-quality output.
Is Design Principles better rated than LightPDF?
Design Principles is rated 4.0★ from 1 reviews. LightPDF is rated 5.0★ from 11 reviews.
What is the FactScore™ of Design Principles and LightPDF?
FactScore™ weighs rating and review volume together. Design Principles scores 12 and LightPDF scores 54.
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