Go Developer Essentials
Go developers value simplicity, speed, and tooling that stays out of the way. Whether you are writing a microservice, a CLI tool, or a Kubernetes operator, small tasks like formatting JSON, testing regexes, or comparing diffs add up. These free, browser-based utilities handle the busywork so you can focus on shipping reliable Go code.
JSON Formatter & Validator
Go's encoding/json package marshals and unmarshals constantly. Paste a raw JSON payload to pretty-print and validate — catch missing commas before they surface as json.Unmarshal errors in your tests.
RegExp Tester
Go uses RE2 syntax with guaranteed linear-time matching. Test your patterns against sample strings with live highlighting. Ideal for building log parsers, route matchers, and input validators.
regexp.MustCompile patterns for log pipelines, HTTP routers, and validation middleware.Base64 Encoder / Decoder
Decode JWT tokens, encode binary payloads for gRPC metadata, or inspect Base64-encoded Kubernetes secrets — all without writing a throw-away main.go.
WebSocket Tester
Connect to any WebSocket endpoint built with gorilla/websocket or nhooyr/websocket. Send and receive messages in the browser to verify your handlers without writing a test client.
Code Diff Tool
Compare two versions of a Go file, a go.sum delta, or generated protobuf output side by side. Faster than running git diff during code review.
JSON to YAML Converter
Go CLI tools frequently consume YAML configuration (Kubernetes manifests, Helm values, Docker Compose). Convert JSON API responses to YAML when building test fixtures or documentation.
Crontab Calculator
Validate cron expressions used in robfig/cron schedulers or Kubernetes CronJobs. See the next ten firing times to avoid off-by-one scheduling mistakes.
MD5 / Hash Generator
Generate MD5, SHA-256, and SHA-512 hashes to verify file checksums, test crypto/sha256 output, or compare ETag headers from your HTTP handlers.
Hex Converter
Convert byte slices to hex strings and back — essential when debugging binary protocols, gRPC payloads, or raw TCP streams in Go networking code.
URL Encoder / Decoder
Encode or decode query parameters when debugging net/http requests. Essential when constructing OAuth callbacks or inspecting URL-encoded form bodies.
Timestamp Converter
Convert Unix epoch timestamps to human-readable dates. Indispensable when reading structured logs, debugging time.Unix() output, or correlating distributed traces.
cURL Converter
Paste a cURL command and convert it to a Go net/http request. Speeds up integration work when you have a working cURL example from API documentation.