AI Summarizer in Your Browser Sidebar
SideZero summarizes the page you're already on. One click turns YouTube videos, articles, and long webpages into key points — no copy-pasting into another tab.
From the makers of Currency.Wiki — browser tools used by 40,000+ people.
One summarizer for the whole web
The same sidebar handles every kind of page — no separate tools, no pasting.
Summarize YouTube videos
Get the key points of a 40-minute video before deciding whether to watch it. SideZero reads the video's transcript and returns a structured summary of the main topics — great for lectures, reviews, and tutorials.
Article & webpage summarizer
News, blog posts, research, documentation — if it's open in your browser, one click condenses it. Long reads become key points, and the original page stays right there for the detail.
Ask questions about any page
A summary is just the start. Ask follow-ups — "what does this say about X?" — and get answers grounded in the page you're on. It's an AI reading assistant that stays in context.
What is an AI summarizer?
An AI summarizer is a tool that reads long content — an article, a video transcript, a report — and condenses it into the points that matter. Instead of skimming and hoping you caught the important parts, you get the substance in a few seconds.
Most summarizer tools make you copy text into a box on another website. SideZero works the other way around: it sits in your browser's side panel and reads the page you're already looking at. Summarize an article, a YouTube video, or any webpage in one click — the summary appears next to the content, not instead of it.
How it works
From install to first summary in under a minute.
Install the extension
Add SideZero to Chrome or Edge. No account or card needed — you can start with free daily messages on the spot.
Open the sidebar
Click the SideZero icon and the panel opens next to the page you're reading — it stays with you as you browse from tab to tab.
Summarize in one click
Ask for a summary, or use the one-click action. Works on articles, YouTube videos, documentation, forums — anything you can open in a browser.
More than a summarizer
SideZero is a full AI sidebar — summarizing is one of its jobs.
Chat with leading AI models
Pick the model that fits the task. Use SideZero's built-in free tier, or connect your own API key and go provider-direct.
Write & translate
Draft replies, fix tone, translate selections — right where you're typing, with the page as context.
Right-click actions
Select text on any page and summarize, explain, or translate it straight from the context menu.
Screenshot Q&A
Capture part of a page — a chart, a table, an error — and ask about it. The image becomes the subject of the question.
Voice input
Talk instead of typing when your hands are busy. Ask for the summary out loud.
Deep Research
An AI research assistant for when you need more than a summary: multi-step, sourced research that runs on your own API key, billed by your provider at cost.
Why SideZero
An honest free tier
Free daily messages from our own servers, stated up front — no asterisks. Sign in to raise the daily cap, still free.
Bring your own key
Connect an API key from your provider and SideZero never meters you — requests go from your browser to the provider, billed at cost.
No account to start
Install and ask your first question immediately. Signing in is optional — it just adds more free messages.
Your data stays yours
Pages are read only when you ask — never in the background. API keys live in local extension storage and never reach our servers.
Works in Chrome and Edge
The same extension in both stores, built on the browser's native side panel.
Built for how people actually use it
Whether you're studying, working, or digging into a topic.
Students
Summarize lectures and YouTube explainers, get concepts re-explained in plain language, and turn long readings into study notes.
Professionals
Condense reports and long threads, draft replies in your tone, and translate on the spot — without leaving the page you're working from.
Researchers
Skim papers and articles faster, ask follow-up questions in context, and run deeper multi-source research with your own API key.
Frequently asked questions
What is an AI summarizer?
Is SideZero free?
Does it summarize YouTube videos?
Which AI models does it use?
Do I need an API key?
Is my data safe?
Does it work in Chrome and Edge?
How is this different from using ChatGPT in a tab?
Read less. Know more.
Install SideZero and turn the next long read into a 20-second summary.
