Changelog

Public log of new tools, content, and improvements shipping to JSON Web Tools. Most recent first.

2026-05-03 — SEO content push and validator deep-dives

• New pillar guide: JSON Schema oneOf vs anyOf vs allOf — composition keywords, the discriminator pattern, and gotchas that bite production schemas.
• New pillar guide: JSON Schema vs Zod vs TypeBox vs Yup vs Joi — honest comparison of the 5 most-deployed runtime validators in 2026.
• New pillar guide: JWT vs Session Cookies vs PASETO vs Biscuit — auth token comparison with concrete recommendations.
• Schema Examples page: added definition box, comparison table, and jump-list at the top for featured-snippet optimization.
• JSONPath Tutorial, Blog index, homepage: title and meta-description rewrites for higher CTR.
• JWT Decoder: added "JWT Structure at a Glance" reference table.
• Compliance pages expanded: About (973 words), Contact (697 words), Privacy (1,518 words) — full GDPR/CCPA/AdSense disclosure.
• Sitewide: AdSense slot CSS reservation to eliminate Cumulative Layout Shift on mobile.
• Sitewide: 17 blog posts upgraded from Organization to Person author schema for E-E-A-T signal.
• Sitemap refreshed with 10 missing URLs and accurate lastmod dates.

2026-04 — SEO content expansion (8 new long-form guides)

• JSON Best Practices — naming, versioning, error formats, pagination.
• JSON to CSV Guide — flattening, escaping, Excel compatibility.
• JSON in Modern JavaScript — ES6+ features, fetch, optional chaining.
• Complete JSON Schema Guide — full keyword reference.
• JSON Syntax Error Guide — diagnosing every common parse error.
• JSON to TypeScript Guide — generation strategies, optionals, unions.
• JSON Escape Guide — every escape sequence, Unicode handling.
• JSON Compression — gzip vs brotli vs MessagePack tradeoffs.

2026-03 — World-class SEO foundation

• Achieved 100/100 SEO score across 85+ pages.
• Unified analytics event names across main app and inline widgets.
• Added .html → clean URL 301 redirects for the entire toolkit.
• Schema.org markup added: SoftwareApplication, FAQPage, HowTo, BreadcrumbList on every tool page.
• Full Open Graph and Twitter Card metadata on every page.
• www → non-www canonical redirect.
• Service worker for offline PWA support.

2026-02 — Initial public launch

• Initial release of JSON Web Tools with 60+ utilities including validator, formatter, JWT decoder, type generators, and format converters.
• Privacy-first architecture: every tool runs client-side, no data uploaded.
• Free for all users, no signup, no premium tier.
• Domain registered and Firebase hosting configured.

What's Coming Next

Planned focus areas (not promises, but where attention is going):

• Streaming JSON parser benchmarks for Node.js and browser.
• JSONPath query builder with autocomplete from sample data.
• More language targets for the type generator (Erlang, Elixir, Crystal).
• Long-form deep-dives on JSON Schema, JSONPath, and security best practices.
• Improved handling of 50MB+ JSON documents without main-thread blocking.

Got a Suggestion?

Most additions to the toolkit started as a single email from a real user. If a workflow is missing or a tool needs improving, write to admin@jsonwebtools.com. The Contact page has more channels.