DevOps
Building a JSON Formatter in Vanilla JavaScript: From Scratch (aijsons.com)
Open-source walkthrough of parse/format, syntax highlighting, repair logic, and why we skipped React and Monaco.
JSON Tools Guides
Practical, code-first guides based on real development experience. Every article includes runnable examples you can copy and test immediately.
We write practical, code-first guides based on real development experience. Every article includes runnable examples you can copy and test immediately. Our articles span three primary topic areas:
- JSON & Data — formatting, validation, schema design, parsing performance, and data transformation
- Web & API — REST/GraphQL API design, pagination, authentication, caching, and error handling
- DevOps & Tools — CI/CD integration, configuration management, structured logging, and tool development
Web & API
Why JSON Tools Must Run Client-Side: Privacy, Compliance, and Trust
GDPR, fintech API keys, and the 60-second Network tab audit for any JSON tool.
Performance
JSON Tree Viewer Performance Comparison: 5 Tools Benchmarked (2026)
Independent 1MB / 5MB / 10MB benchmarks — virtualization vs full DOM renderers.
Performance
Processing 50MB JSON in the Browser Without Freezing the UI
Web Workers, memory budgets, and tool-by-tool behavior at scale.
Web & API
PostgreSQL JSONB Indexing: A Practical Query Optimization Guide
GIN vs B-tree expression indexes, EXPLAIN ANALYZE, and partial indexes for JSONB at scale.
DevOps
Local Static Site Preview with Docker: Catch Bugs Before Deploy (aijsons.com)
Why Live Server is not enough — Docker + nginx catches redirect rules and ads.txt MIME types before git push.
DevOps
GitHub Actions CI for Static Sites: What We Run Before Every Deploy (aijsons.com)
Sitemap validation, internal link checks, redirect rule budgets, and why we disabled auto content generation.
Web & API
API Authentication in Practice: JWT, Bearer Tokens, and API Keys
How to choose, implement, and debug API auth — API keys vs Bearer vs JWT, algorithm confusion, key rotation, and a 5-minute 401 debugging workflow.
DevOps
Deploying a Static Developer Tool Site: GitHub Pages + Cloudflare (Lessons from aijsons.com)
Real deployment guide — DNS setup, _headers caching, _redirects pitfalls, ads.txt for AdSense, and the sitemap mistakes that broke SEO.
Web & API
HTTP Status Codes for API Debugging: A Field Guide (With Real Integration Stories)
Real-world debugging field guide to every HTTP status code you'll hit during API integration. Covers 2xx traps, 401 vs 403 distinction, 5xx triage,...
Performance
JSON Parsing in Web Workers: A 2026 Performance Guide
Learn how to offload JSON parsing to Web Workers in 2026. Compare structured clone with transferable objects, integrate Comlink, and keep UIs respo...
Debugging
Diagnosing JSON Schema Validation Failures with Precision in 2026
Learn systematic techniques for diagnosing JSON Schema validation failures. Master ajv error objects, custom reporters, oneOf debugging, and integr...
Development
JSONPath RFC 9535 Arrived: What Broke in Jayway, Goessner, and jsonpath-plus — and How to Migrate
Understand JSONPath RFC 9535 breaking changes from legacy implementations. Migration guide with code diff examples for Jayway, Goessner, jsonpath-p...
Development
Python 3.13 JSON at Speed: orjson vs ujson vs msgspec Benchmarked on Free-Threaded CPython
Real-world benchmarks of Python 3.13 JSON performance with orjson, ujson, msgspec, and the new free-threaded build. Includes migration guide, memor...
Tooling
Processing 500MB JSON Without Crashing: A Deep Technical Benchmark of Tree Viewers at Scale
Performance comparison of JSON tree viewers handling 100MB+ files. Benchmarks of jsoncrack.com, JSON Hero, Dadroit JSON Viewer, and custom solution...
Security
JSON Security: Preventing Vulnerabilities in Modern Applications
Protect your applications from JSON-related security vulnerabilities. Learn about prototype pollution, injection attacks, and secure handling of un...
Tutorial
JSON Error Handling Complete Guide: From Parse Errors to Robust Applications
Master JSON error handling in your applications. Learn how to catch parse errors, validate data, and build resilient systems that gracefully handle...
Tooling
Stop Scrolling Through Raw JSON: Chrome DevTools vs Dedicated Tree Viewers — Real Performance Data
Why every developer needs a JSON tree viewer: comparing Chrome DevTools vs AI JSON Viewer vs JSON Hero with performance benchmarks for file sizes f...
Tutorial
JSON Data Transformation with jq and JSONata: Practical Guide
Transform JSON data efficiently using jq command-line tool and JSONata expression language. Learn about filtering, mapping, aggregations, and real-...
Tooling
VSCode vs IntelliJ vs jq vs Web Tools: JSON Formatter Performance Benchmarked
In-depth performance comparison of VSCode, IntelliJ IDEA, jq, and web-based JSON formatters. Real benchmark data, throughput measurements, and reco...
Development
Testing JSON APIs: Comprehensive Strategies for Developers
Master JSON API testing with practical strategies for unit testing, integration testing, contract testing, and end-to-end testing. Covers assertion...
Tutorial
JSON Deep Copy in JavaScript: structuredClone, JSON.parse, and When to Use Each
Master all methods for deep cloning JavaScript objects with JSON: JSON.parse/JSON.stringify, structuredClone, and library alternatives. Understand ...
Tutorial
Working with Nested JSON Structures: A Practical Flattening and Querying Guide
Master nested JSON data structures. Learn flattening techniques, deep querying with JSONPath, and practical patterns for transforming complex hiera...
General
JSON Merge Patch: A Simple Algorithm for Partial Updates
Understand RFC 7386 JSON Merge Patch for partial JSON updates. Learn when to use merge patch vs. other update strategies.
General
Build Your Own JSON Parser in JavaScript: A Complete Guide
Learn how to build a JSON parser from scratch in JavaScript. Understand parsing algorithms, handle edge cases, and gain deep insight into how JSON ...
Tutorial
JSON to CSV Conversion: Complete Developer Guide with Code Examples
Learn how to convert JSON data to CSV format using JavaScript, Python, and command-line tools. Handle nested objects, arrays, and edge cases like m...
Performance
JSON Minification: How to Reduce Payload Size and Improve API Performance
Learn when and how to minify JSON for production. Covers compression techniques, size benchmarks, and strategies for reducing API payload sizes wit...
Tutorial
JSONPath Guide: Extract Data from Any JSON Structure
Master JSONPath syntax to extract nested data from complex JSON responses. Covers operators, filters, functions, and practical examples for API tes...
Development
JSON REST API Design Best Practices: Structure, Naming, and Versioning
A practical guide to designing clean, consistent JSON APIs. Covers naming conventions, response envelopes, error formats, pagination patterns, and ...
Development
Working with JSON Dates: ISO 8601, Timestamps, and Timezone Best Practices
A comprehensive guide to handling dates in JSON APIs. Covers ISO 8601 format, Unix timestamps, timezone pitfalls, and practical solutions in JavaSc...
Development
JSON Escape & Unescape Free Online Tool + Examples (Newline, Quotes, Unicode)
JSON escape & unescape online free tool with examples. Covers newline (\n), quotes (\
Debugging
How to Compare Two JSON Documents: Find Differences Instantly
Compare two JSON documents and find differences. Learn diff algorithms, visual comparison tools, and how to track changes between JSON versions.
Tutorial
How to Sort JSON Arrays and Objects by Any Field
Sort JSON arrays by string, number, or date fields. Learn JavaScript sort methods for JSON data with examples for ascending and descending order.
Development
JSON Validator: Debug API Errors Faster with Instant Validation
Learn how a JSON validator helps you catch syntax errors, schema violations, and API integration issues before they become production bugs.
API Design
RFC 9457 Problem Details: The Standard for JSON API Error Responses
RFC 9457 Problem Details for HTTP APIs: standardize JSON error responses. Learn the format, implementation examples from Stripe/Twilio/AWS, and bes...
API Design
JSON Patch vs Merge Patch: When to Use Each
JSON Patch (RFC 6902) vs Merge Patch: Learn the difference between these two partial update strategies for REST APIs. Which one should you use and ...
General
Zod v4 + JSON Schema: Runtime Validation for AI Agent Responses | AI JSON Blog
TypeScript types only check at compile time but LLMs respond at runtime. Zod v4 enables runtime validation. | AI JSON Blog
General
JSON Schema Draft 2020-12 Guide: Validation Examples, $ref & Conditionals | Free
JSON Schema Draft 2020-12 practical guide —with validation examples, $ref, conditionals, and real-world API patterns. Covers required fields, type ...
Web & API
JSON API Error Handling: Building Robust Error Responses
RFC 9457 patterns, Stripe/Twilio/AWS examples for production JSON error responses.
Performance
JSON CDN Integration: Optimizing JSON Delivery with CDNs
CDN caching, gzip compression, and edge delivery for JSON API responses.
Development
JSON Data Visualization: Converting JSON to Charts and Graphs
Tools and libraries for turning JSON datasets into charts and dashboards.
Performance
JSON Serialization Performance: Optimization Techniques
Profiling, streaming, and faster parse/stringify strategies for large payloads.
Security
JWT Security Best Practices: Avoiding Common Vulnerabilities
Algorithm confusion, token theft, and secure JWT implementation patterns.
Debugging
JWT Debugging Guide: How to Inspect and Validate Tokens
Inspect token contents, validate signatures, and fix common JWT errors.