DevsTool
17 fast, privacy-first utilities for developers and DevOps engineers — all client-side, no data leaves your browser.
Developer Tools
JSON Formatter
Format, validate, and minify JSON data
Base64 Encoder
Encode and decode Base64 strings safely
URL Encoder
Safely encode and decode URL parameters
JWT Decoder
Inspect JSON Web Tokens and check expiry
Timestamp Converter
Convert Unix timestamps to readable dates
UUID Generator
Generate and validate RFC-4122 UUIDs
Diff Checker
Compare two texts line, word, or char-level
Markdown Preview
Write and preview Markdown with GFM support
DevOps Tools
YAML Validator
Lint and format Kubernetes and CI configs
ENV Parser
Parse and validate .env files, export to JSON
Log Formatter
Format JSON logs and filter by severity
Dockerfile Linter
Lint Dockerfiles for best practices
Git Command Builder
Build complex git commands with a UI
Cron Builder
Build and understand cron expressions
Port Reference
Look up well-known port numbers
HTTP Headers
Inspect response headers and security posture
Secret Scanner
Detect exposed credentials, API keys and tokens before they leak