What Sider is
Sider brings several AI models, page chat, summarization, translation, and writing tools into a browser sidebar. It is better framed as a general browser copilot than a narrowly defined assignment helper.
Feature coverage
- Multi-model chat
- Page and PDF summarization
- AI search
- Writing and translation
- Persistent sidebar
What stands out
- Exceptional public rating volume
- Broad feature coverage
- Multiple model choices
Tradeoffs to know
- Complex product surface
- Usage limits vary by plan
- Store lists PII and website content
Is Sider safe to use?
Sider is safe for general browsing assistance by the public record: 5,000,000 users, a 4.9 rating across 113.8K reviews — the largest sample among the AI assistants we cover — and current updates. Page-aware chat needs website-content access and the listing discloses PII, so keep it off pages holding protected or institutional data.
Page access Broad
Requests page-content access across sites. Broad access is not itself a red flag — the question is whether the job justifies the reach, and whether the publisher's record earns it.
Page-aware chat and summaries require access to website content. Limit site access and avoid pages containing protected student or institutional data.
Store-disclosed data
- Personally identifiable information
- Website content
The Chrome Web Store lists personally identifiable information and website content among handled data categories.
What does Sider's store listing disclose?
Two categories: personally identifiable information and website content. Page-aware chat and summaries read the page you invoke them on, and prompts are processed by remote models rather than locally.
Can I limit which sites Sider can read?
Yes. Chrome's site-access controls can restrict the extension to specific sites or to on-click activation, which is the right setting for anyone who works with sensitive pages.
How we judge this: our extension safety guide · how we rate
Pricing
Limited free use; paid plans and in-app purchases. Pricing and plan limits change more often than store metadata, so use the linked developer page as the final check before subscribing.
Alternatives
Head-to-head comparisons
Sources
We used the official Chrome Web Store listing and first-party developer material. Public metrics can change after the fact-check date.
- Chrome Web Store listing
Store metrics, feature description, and data categories.
- Sider pricing
Plan and usage information.
- Extension Reviewer methodology
How we verify public claims and weigh tradeoffs.