Developer Utilities
Small, everyday utilities for developers and sysadmins: encoders and decoders, hash, password and UUID generators, a JWT decoder and signer, a regex tester, a text diff, and Nginx/Apache config and .htpasswd generators.
Most of them run entirely in your browser, so the text, tokens and passwords you paste are never sent to a server.
15 free utilities tools
- Base64 Encoder / DecoderEncode text to Base64 or decode it back
- URL Encoder / DecoderPercent-encode or decode URL and query-string text
- HTML Entity Encoder / DecoderEscape text to HTML entities or decode them back
- Hash GeneratorMD5, SHA-1, SHA-256, SHA-384 & SHA-512 of any text
- .htpasswd GeneratorBasic-auth user:hash lines (apr1 / SHA-1)
- QR Code GeneratorEncode a link or text as an SVG/PNG QR code
- Password GeneratorGenerate a strong, random password
- UUID / GUID GeneratorGenerate one or many random v4 UUIDs
- JWT DecoderDecode a JWT's header, payload, and expiry
- JWT GeneratorBuild and HMAC-sign an HS256/384/512 token
- Regex TesterTest a regular expression with live matches and groups
- Text DiffCompare two blocks of text line by line
- Unix Timestamp ConverterConvert Unix timestamps to and from dates
- Password Breach CheckerCheck a password against known data breaches
- Nginx / Apache Config GeneratorGenerate a reverse-proxy or static-site vhost config
Guides: DevOps & CI/CD
- Feature Flags in PracticeFlag types (release, ops, experiment, permission), where to evaluate them, targeting rules and gradual rollout, kill switches, flag debt and cleanup, and testing code behind flags.
- Artifact Repositories: Nexus and ArtifactoryWhy you need a private artifact repo, hosted/proxy/group repository types, caching public registries, retention and cleanup, promotion between repos, and auth for CI.
- Chaos Engineering BasicsThe steady-state hypothesis, blast-radius control, common experiments (pod/node kill, latency, packet loss, dependency failure), tools, running a game day, and turning findings into fixes.
- SBOMs and Supply-Chain Security, PracticallyWhat an SBOM is (SPDX/CycloneDX), generating one with syft, scanning it with grype, SLSA provenance levels, pinning dependencies, and where the real risk is versus checkbox compliance.
- GitOps with Argo CDThe GitOps model, Argo CD Applications and sync policies, drift detection and self-heal, app-of-apps and ApplicationSets, handling secrets, and the sync-fails debugging path.
- pre-commit Hooks That Actually HelpSetting up the pre-commit framework, a useful hook set (formatters, linters, secret scanning, large-file guard), running in CI too, auto-fix vs fail, and keeping hooks fast.
Checking a whole domain? The Super Scanner runs every DNS, email, website and security check at once and gives one score.