LightPDF
A free, simple PDF toolkit for Windows, Mac, Android and iOS
TheLibrarian.io
Your WhatsApp AI Assistant
Updated February 2026
| LightPDF | TheLibrarian.io | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 11 | 24 |
| Pros | 20 | 1 |
| FactScore™ | 54 | 69.9 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
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 protectionBoth tools — Pros
—Only in TheLibrarian.io — Pros
WhatsApp integrationOnly in LightPDF — Cons
—Both tools — Cons
—Only in TheLibrarian.io — Cons
Reminders SchedulingDetails
| LightPDF | TheLibrarian.io | |
|---|---|---|
| Categories | Productivity, Design & Creative | Productivity, AI Chatbots |
| Platforms | Web · iOS · Android | Web |
| Became Popular | January 24, 2018 | April 17, 2025 |
| Website | lightpdf.com | thelibrarian.io |
Who Should Pick Which?
Choose LightPDF if...
- Conversion tools
- Editing tools
- Intuitive interface
Choose TheLibrarian.io if...
- WhatsApp integration
With a FactScore™ of 54 vs 69.9, TheLibrarian.io leads in community reception. LightPDF uniquely offers Conversion tools and Editing tools, while TheLibrarian.io stands out for WhatsApp integration.
What Users Say
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...
TheLibrarian.io
I've been using The Librarian daily, and it's quickly become an essential part of my workflow. The more I use it, the smarter it gets - learning my habits, anticipating my needs, and asking exactly...
Polished "AI on WhatsApp" — searches the web, summarizes, answers. Easy to use, no setup.
As a content creator and educator, I juggle classes, content production, and client meetings daily. TheLibrarian.io has been a total game-changer. I use it to auto-schedule my calendar, send well-s...
Related Comparisons
Frequently Asked Questions
Which is better, LightPDF or TheLibrarian.io?
Based on FactScore™, TheLibrarian.io leads with a score of 69.9 vs 54. TheLibrarian.io has a higher rating of 5.0★ compared to 5.0★.
What are the pros of LightPDF compared to TheLibrarian.io?
LightPDF uniquely offers: Conversion tools, Editing tools, Intuitive interface, Fast performance, High-quality output.
What are the pros of TheLibrarian.io compared to LightPDF?
TheLibrarian.io uniquely offers: WhatsApp integration.
Is LightPDF better rated than TheLibrarian.io?
LightPDF is rated 5.0★ from 11 reviews. TheLibrarian.io is rated 5.0★ from 24 reviews.
What is the FactScore™ of LightPDF and TheLibrarian.io?
FactScore™ weighs rating and review volume together. LightPDF scores 54 and TheLibrarian.io scores 69.9.
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