Tab Shark

Tab Shark is a network-capture and traffic-analysis tool that lives inside a single browser tab. It gives you the kind of deep, packet-by-packet visibility that network engineers get from Wireshark, NMAP, and Burp Suite, but scoped to exactly one tab's web traffic and presented in a floating, draggable panel pinned right on top of the page you are inspecting. You click the toolbar icon, a compact capture window appears over the page, and from that moment every network exchange the tab makes is recorded, decoded, color-coded, and made searchable in real time. What It's Used For Tab Shark is built for anyone who needs to see precisely what a web page is doing on the wire: web developers debugging an API integration, QA engineers reproducing a failing request, security researchers auditing what data a page sends and where, and technical support staff diagnosing why a page misbehaves for one user and not another. Instead of guessing what a page is transmitting, you watch it happen: the requests it fires, the responses it gets back, the WebSocket messages it streams, the servers it talks to, and the payloads it carries. Whats New? Tab Shark now teaches, not just records. The new Learn panel turns your own captured traffic into a course on how the web actually works: thirteen lessons covering URLs, DNS, the TLS handshake, the life of a request, methods and status codes, headers, cookies, caching, origins and CORS, WebSockets, rendering, third parties, and how Tab Shark itself works. Every lesson ends by telling you where to see that exact thing in the traffic you just captured, with a one-click filter that takes you straight to those rows, so you are reading your own data instead of a textbook example. Alongside the lessons, a suggestion engine reads your capture and produces cards that name the specific thing that triggered them: something to try right now, what the site's owner would fix, what you can do for your own privacy, and what someone auditing the site would look for. Nothing is generic advice, and every claim is drawn from a specification or protocol registry rather than asserted. The Cookies panel answers the question the browser never does: who is actually watching you on this page. Every cookie sent or set in the capture is grouped by the company behind it, so four Google cookies read as one company at a glance rather than four opaque names. Each entry tells you what the cookie does, how long it lives, whether it is first-party or third-party, and plainly what breaks if you delete it, so you can clear the trackers and keep the session that keeps you logged in. Recognition is honest about its own confidence: cookies matched by exact name are marked "known," ones matched by naming convention are marked "pattern," and anything unrecognised is marked "inferred," meaning the description is read from that cookie's own attributes rather than presented as fact. Tab Shark never contacts a vendor to identify a cookie, because a tool that generates its own traffic would corrupt the very capture you are reading. How It Works, Just Like Wireshark Wireshark attaches to a network interface and captures every packet crossing it, then dissects each one into human-readable fields. Tab Shark applies the same idea at the browser level. Rather than tapping a NIC, it attaches Chrome's own debugging protocol to the active tab and listens to the full lifecycle of every network request the tab issues. Each request, response, redirect, cache hit, failure, and WebSocket frame becomes a "packet" in a live, scrolling list, exactly like Wireshark's packet list. Selecting any entry opens a detailed dissection: general metadata, request and response headers, the request body, the response body, a raw hex view of the bytes, and a timing waterfall showing DNS, connect, TLS, send, wait, and receive phases. Tab Shark also mirrors Wireshark's most powerful analysis conveniences: Conversation coloring. Every distinct remote IP endpoint is assigned a stable color, so the same server is always the same color everywhere in the capture, just like Wireshark's conversation coloring. You can see at a glance which flows belong to which host. Display filters. A Wireshark-style filter bar lets you narrow the capture with plain text or keyed tokens (for example method:POST, status:4xx, type:xhr, domain:example.com, ip:1.2.3.4, is:sensitive, or -png to exclude), combined with AND logic and negation. Follow / isolate a stream. You can mute any conversation color to silence noisy endpoints and isolate the single dialog you care about, the browser-tab equivalent of following one TCP stream. Marking and annotation. Individual packets can be marked so you can find the interesting ones again. Export for later analysis. The whole capture, or just the filtered subset, exports to HAR 1.2 (openable in DevTools and other HAR viewers), full JSON, CSV, or a readable text dump. On top of the Wireshark-style core, Tab Shark adds a security-analyst layer: it flags requests that plausibly carry credentials, tokens, personal data, or payment information (an authorization header, a password field in a body, a JWT, a possible card number, a plaintext-HTTP request, a login or OAuth endpoint) with a red alert outline and a written reason, so sensitive traffic draws your eye immediately. Benefits - See exactly what a tab sends and receives, with no guesswork. - Debug APIs, redirects, caching, and WebSocket flows faster than reading server logs. - Spot data leaks and insecure requests through the built-in sensitive-request alerts. - Stay in context: the panel floats over the page you are inspecting, so you never lose your place. - Filter thousands of requests down to the handful that matter in seconds. - Isolate a single server conversation by muting the rest. - Hand off findings cleanly by exporting HAR, JSON, CSV, or text. - No external tooling, proxy setup, or certificate installation required; it uses the browser's own instrumentatio…