Recommended · Automatic updates
Install from the store
The simplest way to start. Add the extension, then connect your model in Settings. Store review may lag behind GitHub releases.
Add to Chrome ↗browsa / browser side-panel AI
Stay on the page.Ask beside it.
Long article? Dense paper? Fast-moving video? Bring the page into a conversation with your own AI. Get the explanation without the copy-paste — or leaving what you’re reading.
Chrome / Edge · Source install available
Free extension. Bring your own model or agent.
▶YouTube
Search…
4K
Blue Planet II · Episode 1 – One Ocean (full documentary)
From the shallow seas to the abyss, explore the most hidden corners of the ocean:
bioluminescent creatures, cooperative humpback hunting, and life in total darkness.
We know less about our ocean than the surface of the Moon.
18:42Blue Planet II · Ep.2 – The Deep
The Deep · 4.1M views
21:07Ocean Bioluminescence Explained
Bioluminescence · 890K views
15:30How Humpbacks Hunt with Bubble Nets
Bubble-net hunting · 2.3M views
📎 Attached: 《Blue Planet II》Ep.1 – One Ocean
/summarize key points, with timestamps
Reading subtitles…
One Ocean · key moments
🌊 Intro on the ocean's scale — we know it less than the Moon[00:12]
✨ Bioluminescence is widespread in the deep, for lures & camouflage[03:40]
🐋 Humpbacks hunt cooperatively with bubble nets[08:15]
🐙 Abyssal life evolved extreme adaptations to pressure and dark[11:48]
🌍 Close: human activity is reshaping ocean ecosystems[15:02]
Ask anything… use 📎 to attach current page
Video notes: replies carry clickable [mm:ss] timestamps — click to jump to that moment.
AI · Browsers
Bringing an AI copilot to the side of every page you read
Feeding a page's text to an LLM is easy; making it truly "understand" the page is hard. We use a three-layer cascade: Readability first for clean article text, then a DOM tree that keeps structure, then full text as a fallback. For major sites we read the structured data the page already loaded — subtitles, comments, article source.
No re-authentication, no third-party uploads — data flows only between your browser and your own backend.
📎 Attached: Bringing an AI copilot to every page you read
/keypoints what are the takeaways?
Reading article…
Takeaways
🧠 Three-layer cascade: Readability → DOM tree → full text
🕵️ Major sites read their own loaded data — no re-auth
🔒 Data stays between your browser and your backend
⚡ Articles, subtitles & PDFs all covered
Ask anything… use 📎 to attach current page
Articles: /keypoints extracts the essentials; the body is attached via the Readability cascade.
Attention Is All You Need
Abstract — The dominant sequence transduction models are based on complex recurrent or convolutional neural networks… We propose a new simple network architecture, the Transformer, based solely on attention mechanisms.
The Transformer dispenses with recurrence and allows for significantly more parallelization, cutting training time.
Figure 1: The Transformer – model architecture
It achieves state of the art on WMT 2014 English-to-German and English-to-French at a fraction of the training cost.
📎 Attached: PDF 《Attention Is All You Need》(15 pages · 6 figures)
What's the core contribution?
Parsing PDF…
Core contribution
⚙️ Transformer — attention-only, no recurrence or convolution
⚡ Highly parallel, trains far faster than RNN/LSTM
📊 Fig. 1 shows the architecture; Fig. 2–4 training & BLEU resultsFig.1
🏆 SOTA on both WMT 2014 tasks at lower training cost
Ask anything… use 📎 to attach current page
PDFs: local WASM rebuilds tables / headings / layout; figure regions are cropped and captioned automatically.
Illustrative interface · Switch scenes to see how browsa works with the page.
demo
browsa in 60 seconds
Real screen capture: attach a page and ask, follow up on a selected phrase, explain a selection in place, a clickable video timeline — with diagrams and a 3D protein structure rendering inside the reply, and an agent's tool calls ending in an approval card.
how it works
Three steps to talk to a webpage
No window-switching, no copy-pasting. browsa sits quietly beside the page you're reading — like a margin note.
01
Open the side panel Ctrl+Shift+H
Press the shortcut or click the toolbar icon on any page. The browsa panel appears on the right.
02
Attach the page 📎
Click 📎 and the page content flows into the conversation — articles, subtitles, PDFs. Selected text can be asked about directly.
03
Stream replies any backend
Replies stream in word by word, with Markdown, math and charts. Connect your own OpenAI-compatible API, the Hermes / opencode agents — your subscription-logged-in Codex / Claude Code via agent-bridge, or pi with its own configured models. The UI follows your browser language — English / 中文 switchable.
Installed? Quick start walks you through the first question; the full guide covers reading, video, rendering, sessions, backends and settings.
features
More than a chat box
browsa puts "reading" and "asking" in the same place: long articles, videos, PDFs — the AI is right there.
attach
Attach the page
Bring the current page into the conversation with one click — modes pick themselves:
- Auto cascade: Readability body → DOM tree → full text
- 📷 Screenshot mode, for multimodal models
- PDF parsed locally: WASM rebuilds tables / headings / layout, figures auto-cropped
- GitHub file pages pull raw source directly, skipping page cleanup
select
Selection Q&A
Select any text on any page and ask directly:
- Floating toolbar: Ask · Explain · Translate · Summarize
- Explain / Translate answer inline — streaming, in place, no panel
- Ask / Summarize: the selection rides into the panel — no 📎 needed first
render
Rich rendering
Replies are more than plain text — formulas and diagrams render in your browser:
- Markdown GFM + 40+ language syntax highlighting
- LaTeX math (KaTeX, Web Worker accelerated)
- Mermaid diagrams, ECharts, Markmap mind maps
- A Mermaid block that won't parse? Ask your configured AI to fix and re-render it
video
Video notes
A complete workflow for video — structured subtitles from YouTube and Bilibili:
- Replies carry clickable
[mm:ss]timestamps that seek the video - Subtitle-less Bilibili videos can still be summarized — automatic ASR transcription
- Long transcripts auto-compressed into points, timestamps preserved
provider
Any backend
No vendor lock-in — connect your own models:
- Hermes Agent: tool execution, approval for risky actions, progress display
- OpenCode Agent: direct line to the opencode CLI agent — same full tool & approval flow
- Agent Bridge: bridges local CLI agents — subscription-logged-in Codex / Claude Code (the model side runs on your subscription), or pi with whatever model you configure it with; one card connects several agents at once
- Any OpenAI-compatible API: OpenAI, Ollama, LiteLLM…
- Add multiple models per card — switch via “Alias · model” in the sidebar
- Ping to verify connectivity and capabilities
privacy
Privacy first
No browsa account. Your choice of model service:
- API keys are stored locally and used to authenticate with your configured provider
- URLs in page context are masked locally before sending — tokens, passwords and signatures stripped
- PDFs are parsed on-device; extracted text and images can be attached to model requests
- Content goes only to the backend you configure
input
Fast input
Say more without typing more:
- Quick actions: Summarize / Key Points / Explain / Outline
- Slash commands + ↑/↓ input history; drafts survive closing the panel
- Keep typing while a reply streams — messages queue and send in order
session
Sessions
Long conversations stay organized:
- Save / restore named sessions, export Markdown
- Full-text in-conversation search (
Ctrl+F) - "Detail-thread" any text in a reply without touching the main history
supported sites
It reads your webpages
For these sites browsa reads the structured data the page already loaded — subtitles, comments, article source, quotes — instead of guessing.
YouTubesubtitles/chapters
Bilibilisubtitles/ASR/stats
Xiaohongshunotes/comments
Juejinarticle source
Zhihuarticles/answers
X / Twittertweets/replies
Redditposts/comments
Xueqiuquotes/posts
Xiaoyuzhoupodcasts
Dedaoarticles
GeekTimearticles
Observes, never hijacks: extraction works by watching the browser's own requests — no re-authentication, and nothing is uploaded to third parties. Every other webpage works too, just not as deeply.
your keys, your agent
Your keys. Your models. Your agent.
browsa sells no subscription, asks for no account, takes no markup. It simply moves your own model endpoints into the side panel — cloud, local, or self-hosted.
- ›No account, no telemetry. Install and go — nothing ever flows through us.
- ›API keys stay local, sent only to the endpoints you configure.
- ›Ollama / LM Studio local models — fully offline works too.
- ›Real agents: tool execution, live progress, approval before risky actions.
O
My OpenAIgpt-4o · /v1/chat/completions
reachable
C
Claudeclaude-sonnet · /v1/messages
not pinged
L
Ollama (local)localhost:11434 · qwen3:32b
offline ok
H
Hermes Agent/v1/runs · tools · approvals
reachable
oc
OpenCode Agentopencode serve · tools · approvals
not pinged
↔
Codex / Claude Code / piAgent Bridge · connect local CLI agents
bridge
Not sure which to choose? Read the model and agent setup guide →
install
Start with your next read.
Choose one installation method, then connect your model or agent. The browsa extension is free.
Installed? Make the connection.
Configure a model API or local agent in Settings and Ping to verify. Open an article, attach it with 📎, and ask your first question.