Side-by-side or overlay PDF diff driven by one engine that reads each file into a structured model — text, vector geometry, images, form fields, annotations — and compares the models. Moves show as moves, edits show only where they happened, and any PDF type works without picking a mode.
Open a STEP / STP part and it measures itself — volume, thinnest wall, draft and undercut checks on load, plus hole detection with a BOM. Measure, section, export STL. Rust + WASM B-rep kernel, runs in your browser.
Read packet captures and reach serial consoles in your browser
Open a .pcap or .pcapng file in the PCAP Analyzer for a packet list, protocol tree, display filter, and follow-stream. Serial Console connects to a switch, router, or board over a USB serial cable, and Drop sends a file straight between your phone and laptop.
Try clearing filters or adjusting your search — most categories have dozens of tools once you widen the net.
About these network tools
Network and sysadmin tools that run in your browser, so packet captures, logs, and configs stay on your machine. A packet capture is one of the most sensitive files in IT: it holds internal IPs, hostnames, credentials, and user data. The PCAP Analyzer opens .pcap and .pcapng files locally with Wireshark-style dissection: a packet list, a per-packet protocol tree, hex, a display filter, conversation and endpoint tables, protocol hierarchy, an IO graph, expert info, and follow-stream, for Ethernet, IP, TCP, UDP, DNS, HTTP, TLS, DHCP, and more. It opens captures up to 256 MB, and you can open DevTools and watch that nothing leaves the tab. It is built for triage of the protocols found in most captures, for the moment someone hands you a capture on a locked-down or borrowed machine. Alongside it, Drop sends a file, clipboard, or snippet between your phone and laptop directly, and Serial Console connects to a switch, router, or embedded board over a USB serial cable from your browser.
Frequently Asked Questions
Is my packet capture uploaded anywhere?
No. The PCAP Analyzer parses your .pcap/.pcapng entirely in your browser via a local WebAssembly engine. The capture never touches a server — open DevTools and watch the Network tab stay empty. That matters because captures are full of internal IPs, hostnames, credentials, and user data.
How is this different from an online packet analyzer?
Most online analyzers parse the capture on a server, so the file has to be sent there first, and some free tiers cap the size or publish results on a page other people can read. These tools parse the capture in your tab with WebAssembly, so the file stays on your device. The PCAP Analyzer opens captures up to 256 MB.
How do I get a packet capture without Wireshark?
You usually already have one, or can make one without installing anything. Windows 10/Server 2019+ ship pktmon (pktmon start --capture, then pktmon pcapng). Linux and macOS have tcpdump. Network gear, firewalls, and cloud VPC traffic mirroring all export pcap/pcapng. Then just drop the file here.
Is this a full replacement for Wireshark?
No, and it does not try to be. Desktop Wireshark is free, local, and has thousands of dissectors. This is a triage analyzer for the common case — the protocols in the vast majority of captures — for when you cannot or do not want to install software but still need to read a capture privately and fast.