WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease vs Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector
WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease and Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector both compete in the same corner of the Chrome Web Store (ai), but they are built for different users. WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease has roughly 6M users and a 4.5-star average; Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector sits at about 5M users with 4.7 stars.
WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease
4.5Easy-to-use PDF tools to view, edit, convert, fill, e-sign PDF files, and more in your browser.
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector
4.7Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Side-by-side comparison
| WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease | Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector | |
|---|---|---|
| Rating | 4.5 / 5 | 4.7 / 5 |
| Reviews | 188 | 5,800 |
| Users | ~6M+ | ~5M+ |
| Pricing | Free | Free |
| Category | AI | |
| Developer | Themes | QuillBot (Course Hero), LLC |
| Last updated | 2026-08-24 | 2026-08-24 |
| Best for | Users who need a free all-in-one PDF editor, converter and signer in the browser. | Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more! |
Final recommendation
WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease wins on adoption, but Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector scores higher with reviewers — start there if ratings matter more.
Frequently asked questions
Can I install WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease and Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector at the same time?
Yes, Chrome runs them independently. Keep both only if they do different jobs; if they overlap, pick one, because each active extension adds memory use, page scripts and another set of permissions.
Where do the ratings and install numbers come from?
From each extension's public Chrome Web Store listing. They can lag the live store slightly, and a dash means the figures have not been synced yet.
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