🧑‍💻 Developer & Web

Developer utilities, networking, web debugging, and automation helpers

Back to Tools

CSS Masonry Layout Generator

Generate pure CSS masonry-style layouts with responsive breakpoints, configurable gaps, and optional full-width skip selectors

Developer & Web

Log Sequence Diagram Converter

Convert structured service logs into Mermaid or PlantUML sequence diagrams, with optional latency and error annotations

Developer & Web

API Contract Mutation Tester

Mutate OpenAPI request fields into semantically risky variants and optionally send them to a real backend to check defensive validation coverage

Developer & Web

API Response Contract Validator

Validate a real API response JSON against the response schema declared in an OpenAPI 3.x specification

Developer & Web

Terraform Plan Visualizer

Parse Terraform plan JSON or text output, classify resource changes, and surface a dependency-oriented summary before apply

Developer & Web

API Breaking Changes Detector & Migration Planner

Compare two OpenAPI 3.x schemas, identify breaking changes, grade client impact, and suggest migration or compatibility strategies

Developer & Web

Distributed Trace Decoder & Waterfall Visualizer

Decode Jaeger, Zipkin, or OpenTelemetry trace JSON and render span timing, dependencies, and error hotspots as an interactive waterfall report

Developer & Web

Accessibility Audit Report Generator

Audit HTML or a URL for common WCAG issues and export a structured PDF report grouped by severity

Developer & Web

Cron Job Simulator

Simulate the next runs of one or two 5-part cron expressions, highlight overlaps, and warn about overly dense schedules

Developer & Web

Network Packet Analyzer

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

Developer & Web

API Contract Stress Tester

Generate boundary-value test cases from an OpenAPI 3.x document and optionally send them to a real backend to spot contract mismatches

Developer & Web

Environment Config Diff Visualizer

Compare dev, staging, and production configuration bundles across JSON, YAML, TOML, or ENV formats and highlight drift, missing keys, and cleanup suggestions

Developer & Web