Sider
AI browser extensions · Freemium
About
A sidebar AI extension for chatting with pages, PDFs and images using multiple models.
Key features
- Sidebar chat
- Chat with PDFs and pages
- Image tools
- Translation
Best for
- — Reading assistance in the browser
- — Comparing model answers
- Pricing
- Freemium
- Platforms
- Chrome, Web, macOS, Windows, iOS, Android
- Works with
- Chrome
- Last checked
- 2026-10-29
- Status
- Listed, not yet tested
Our take
Capable and popular. Overlaps heavily with similar sidebar extensions.
Features and pricing change often — confirm on sider.ai before you commit.
Alternatives to Sider
| Tool | Type | Pricing | Best for |
|---|---|---|---|
| Sider (this) | AI browser extensions | Freemium | Reading assistance in the browser |
| Merlin | AI browser extensions | Freemium | Summarising pages and YouTube videos |
| Monica | AI browser extensions | Freemium | Translating and summarising web content |
| MaxAI | AI browser extensions | Freemium | Rewriting selected text |
| HARPA AI | AI browser extensions | Freemium | Automating repetitive browser tasks |
| Glasp | Reading & highlights | Free | Highlighting while reading online |
| Readwise Reader | Reading & highlights | Paid | Serious readers |