Calculate how much each tunnel or encapsulation layer consumes from your interface MTU, the effective TCP MSS, and the DF ping probe size. For SRE, SD-WAN, and k8s CNI engineers.

Development

Markdown Link Checker

Statically check Markdown links for format errors, broken anchors, and undefined references (no network requests)

Development

Markdown Linter

Check Markdown for style issues: heading levels, code fences, list consistency, and more (zero-dependency rule engine)

Network

Network Packet Analyzer

Parse pcap and basic pcapng captures, surface protocol hierarchy and session statistics, and export filtered packet summaries

Development

Multi-Pattern Matcher

Match multiple regex patterns against text in one operation

Development

Named Group Tester

Parse and display named capture groups from regex patterns

Development

User Agent Parser

Parse User Agent strings to extract browser, OS, device, and engine information

Development

Meta Tag Extractor

Extract and analyze meta tags, Open Graph, Twitter Cards, and structured data from web pages

Development

Lodash Online Utility

Run a safe, curated set of Lodash helpers on JSON input.

Network

MAC OUI Vendor Lookup

Look up the manufacturer of a MAC address from the IEEE OUI database, or reverse-search a company name to list all its OUI blocks — fully offline