WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease vs Merlin AI
WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease and Merlin AI 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; Merlin AI sits at about 900K users with 4.8 stars. On pricing, WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease is free while Merlin AI is freemium.
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.
Merlin AI
4.8One AI assistant for summarising, writing and answering on any page.
Side-by-side comparison
| WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease | Merlin AI | |
|---|---|---|
| Rating | 4.5 / 5 | 4.8 / 5 |
| Reviews | 188 | 8,800 |
| Users | ~6M+ | ~900K+ |
| Pricing | Free | Freemium · From $14.25/mo |
| Category | AI | AI |
| Developer | Themes | Foyer Labs |
| Last updated | 2026-08-24 | 2026-07-05 |
| Best for | Users who need a free all-in-one PDF editor, converter and signer in the browser. | Generalists who want a single AI sidebar instead of five separate AI extensions. |
Final recommendation
WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease wins on adoption, but Merlin AI 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 Merlin AI 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.
Keep researching
Alternatives, shortlists and other comparisons in the same category.