Developer Utilities Tools

curl ↔ fetch, git-log parser, regex visualiser, GraphQL builder.

17 tools · all run in your browser

Postman → cURL

Convert Postman collection requests to cURL commands

Git Diff → HTML

Convert unified git diff output to syntax-highlighted HTML

Regex Visualizer

Visualize regex patterns as a readable railroad diagram (text)

Makefile Explainer

Parse a Makefile and explain each target and its dependencies

Shell Script Linter

Check shell scripts for common issues and bad practices

GitHub Actions Visualizer

Parse a GitHub Actions workflow and show job/step dependencies

HAR File Viewer

Parse and summarize HTTP Archive (HAR) files

API Response Mocker

Generate mock API JSON responses from a URL + method description

GraphQL Query Builder

Generate GraphQL queries from a schema definition

OpenAPI → TypeScript

Generate TypeScript interfaces from an OpenAPI schema

Diff Patch Applier

Apply a unified diff patch to source text

GraphQL Introspection → SDL

Convert GraphQL introspection JSON to SDL schema

HTTP Request Replayer

Generate fetch/axios/curl code from raw HTTP request text

cURL → fetch()

Convert a curl command into a JS fetch() call

Git Log Parser

Parse git log output into structured JSON

HTTP → cURL Builder

Build a curl command from method, URL, headers & body fields

SemVer Bump

Compute next major / minor / patch / prerelease