JSONBeautify Guides & Examples
Practical, no-fluff documentation for JSONBeautify — written by people who hit the problems first.
About JSONBeautify
What jsonbeautify.net is, why the whole tool runs in your browser, what Auto-Repair actually does, and the list of things this page will not do for you.
Changelog
Dated change history for jsonbeautify.net — tool pages, accessibility fixes, ad behaviour, and content additions, with why each one happened.
Contact JSONBeautify
Contact the operator of jsonbeautify.net — parser bugs, auto-repair misses, and feature requests. One human mailbox, replies within two business days.
JSON Tools Compared: jq vs jsonpath-plus vs jqjs vs VS Code Extensions
Honest comparison of JSON tooling — jq, JQjs, JSONPath, JSONDiff, VS Code extensions, and this site — by ergonomics, portability, and what each is actually for.
JSON Best Practices: Formatting, Validating, and Shipping JSON Without Self-Inflicted Wounds
Practical JSON hygiene — trailing commas, number precision, date formats, null vs missing, UTF-8, and pretty vs minify decisions that survive code review.
The JSON Cheatsheet: This Tool, jq, and JSONPath on One Screen
Printable cheatsheet — every control on this beautifier, 12 jq one-liners that cover 90% of daily work, the JSONPath equivalent for each, and validate-or-crash snippets for JS and Python.
JSON Diff Tools: jq Deep Equality, jsondiffpatch, VSCode, and When the Browser Is Enough
Verified jq 1.7 recipes for comparing two JSON files, why --argfile fails on jq 1.7, a path-level diff filter, structural vs textual diffs, and the honest limits of a client-side web differ.
JSON Hacks: Nine Things to Do With a Payload Before You Parse It
Keep big integers intact, sort keys for clean diffs, read NDJSON in one line, find duplicate keys, and inspect JSON you cannot afford to re-stringify.
JSON in JavaScript, 2024–2026: What Actually Changed in JSON.parse
The reviver deep-dive, why 1e999 parses to Infinity but stringify(Infinity) is null, BigInt patterns, structuredClone vs JSON round-trip, and the real shipping status of JSON.parse source access in Node 24 and V8 13.
JSON Libraries in 2026: Validation Is the Whole Market
npm download counts for JSON validators, serialisers, and structured-clone replacements over 2024–2026, why ajv towers over everything else, and what the encoders' growth actually measures.
A Billion Downloads a Month, No Release in Four Years
Registry metadata for the fourteen JSON packages with the most traffic — release date, maintainers, dependency count. json5 carries a billion downloads a month on a 2022 release, and safe-stable-stringify showed why a long gap is not a promise.
JSON Patterns and Gotchas: The Bugs That Survive Code Review
Double-encoded payloads, silently truncated strings, prototype-polluting parses, empty-string traps, and the Unicode pairs that break naive substring logic.
JSON Schema Validation in 2026: AJV, Formats, and Where Validation Stops Helping
What AJV actually checks, why format is off by default, draft 2020-12 vs 2019-09 vs OpenAPI, and the validate-or-crash decision at your API boundary.
JSON Tooling in 2026: Repair Grew 15×, Precision 8×, Everything Else 3×
Two years of npm install counts for jsonrepair, lossless-json, json5, js-yaml, and prettier — and what the gap between them says about the JSON people are actually receiving now.
NDJSON/JSONL: The Format Every Log Pipeline Secretly Runs On
What newline-delimited JSON is, why streaming and logging pipelines standardised on it, how to pretty-print or grep a JSONL stream without loading it, array↔NDJSON conversions with jq, and the three pitfalls that corrupt files silently.
JSON Numbers That Change Value When You Beautify Them
JSON.parse hands you an IEEE-754 double, so a formatter that reprints the parsed value can rewrite your data. Measured inputs and outputs from the shipped tool, including the snowflake IDs that break.
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