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Sider
Browser sidebar assistant for page summaries, translation and writing help.
Referral information
No referral available
About this website
Sider is an AI assistant that lives in a browser sidebar. It answers questions about the page you are on, and also ships mobile and desktop apps.
Capabilities
- Sidebar chat — talk to models such as GPT, Claude, Gemini, DeepSeek and Grok from a Chrome, Edge or Safari sidebar, including about the current page.
- Summarising — summarise web pages, long articles, PDFs, YouTube videos and uploaded audio, and chat with PDFs, images and several tabs at once.
- Translation — translate selected text, whole pages, PDFs and images, with side-by-side bilingual page views and bilingual YouTube subtitles.
- Writing help — rewrite, check grammar, build outlines and adjust tone inside browser text boxes.
- Sider Hand — a browser agent that carries out multi-step tasks on live sites using your signed-in session, such as comparing prices or filling in forms.
- Create — generate images, videos, slides and documents.
Plans
The free tier includes a daily credit allowance plus separate lifetime caps on features such as PDF chats and image generation. Paid plans are billed monthly or annually. Available as browser extensions and as iOS, Android, Windows and macOS apps.