Blog
Practical writing about the formats developers wrestle with daily, from the people building the tools. No paywall, no signup required to read.
The developer error reference
168 real parser and validation errors, each with the exact fix. Compiled from every tool on the site.
JSON vs YAML vs TOML: which config format to use
The real tradeoffs between the three config formats: comments, ambiguity, nesting, tooling, and the values YAML silently changes. With a decision table.
Client-side vs server-side formatters
What actually happens to a pasted payload on the two kinds of formatter site, how to tell which one you are using, and what each can and cannot do.
Dockerfile mistakes that bloat your image
Five habits behind a 900 MB image: the wrong base, no multi-stage build, cache-busting COPY order, leftover package caches, and secrets baked into layers.
GitHub Actions YAML: a validation checklist
The mistakes that only surface after a push: indentation, quoted booleans, cron in UTC, expression syntax, and unpinned actions. Catch them before CI does.
Migrating HTML to JSX without the whack-a-mole
Every attribute rename, style-object conversion, void elements, comments, and the two errors you will hit, with a converter that does the mechanical part.
HTTP security headers in plain English
What HSTS, CSP, X-Frame-Options, Referrer-Policy and Permissions-Policy each prevent, safe default values, and how to check a live response.
Kubernetes manifest checklist before kubectl apply
What to check before kubectl apply: apiVersion drift, indentation, resource limits, probes, image tags, and the YAML values that parse but misbehave.
Minify vs beautify: what each actually changes
Minifying removes what a browser does not need; beautifying restores layout, not meaning. When to use each, what is lost, and the HTML whitespace trap.
SQL formatting style guide for 2026
A house style for SQL that survives code review: keyword case, one clause per line, comma placement, aliasing, CTEs over nesting, and what to automate.
Base64 is not encryption: what it actually does
Base64 is an encoding, not a cipher. What it's for, why it makes data 33% bigger, when to use it, and what to use instead when you actually need secrecy.
How we built a 100% client-side JSON formatter
Why Code Beautifier never uploads your JSON, how the browser-only architecture works, and what it costs to build a formatter this way.
Common JSON syntax errors and how to fix them
Trailing commas, single quotes, unescaped characters, BOMs and NaN: the JSON parse errors developers hit, what causes them, and the exact fix for each.
JWT security mistakes that show up in every pentest
The alg:none bypass, HS256/RS256 confusion, unverified signatures and missing expiry checks: what goes wrong with JWTs and how to avoid it.
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