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Free dev tools

A growing toolbox of fast, no-nonsense utilities for cloud and DevOps engineers. Everything runs entirely in your browser — your tokens, configs, and secrets never leave your device.

The toolbox

Pick a tool

7 tools and counting — all free, all client-side.

JWTSecurity

JWT Decoder

Inspect any JSON Web Token

Decode the header and payload of a JWT, pretty-print the claims, and read the expiry — all in your browser. No verification, nothing leaves your device.

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YMLConfig

YAML Validator

Catch indentation & syntax slips

A fast, honest YAML linter that flags tabs in indentation, unbalanced quotes and brackets, and malformed mapping colons — with the exact line and column.

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B64Encoding

Base64 Encoder / Decoder

Text ↔ Base64, standard or URL-safe

Encode and decode Base64 both ways, including URL-safe alphabets. Handles full Unicode correctly and copies the result with one click.

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K8sKubernetes

Kubernetes Manifest Generator

Deployment, Service or ConfigMap YAML

Fill in a short form and get clean, copy-pasteable Kubernetes YAML for a Deployment, Service, or ConfigMap — with replicas, ports, and env vars.

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DKRContainers

Dockerfile Generator

Sensible multi-stage Dockerfiles

Pick your stack — Node, Python, Go, or Java — set a few options, and get a lean, production-minded multi-stage Dockerfile you can drop into any repo.

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CRNScheduling

Cron Expression Explainer

Cron in plain English

Paste a 5-field cron expression and read exactly when it runs in plain English, plus a description of the next matching times.

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UIDIdentifiers

UUID Generator

Bulk v4 UUIDs, instantly

Generate cryptographically-random version 4 UUIDs one at a time or in bulk, then copy them all with a single click.

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From quick fixes to real interview prep

The tools are free forever. When you're ready to prep seriously, our cloud & DevOps interview kits and free resource library are the next step.

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