Free Developer Tools for JSON, API, SEO, Schema and Automation
Work faster with a curated suite of browser-based utilities. Format JSON, inspect JWT payloads, explain regex patterns, build API request templates, plan cron schedules, and generate schema without installing heavy desktop software. Avoid pasting production secrets, and pair these tools with our Automation Learning Hub to map endpoints, build mock triggers, and test payload formats.
Staging Spotlight
API & Automation Helper Toolkit
Building complex workflows in n8n or Zapier? Validate mock payloads with the Webhook Tester, convert API examples with cURL to Fetch, draft requests with the API Request Builder, or look up errors using the HTTP Status Code Finder.
Browse All (42) Developer Utilities
Practical browser utilities for everyday development
JSON Formatter & Validator
Format, validate, and beautify JSON with error reporting and proper indentation.
JSON Compare Tool
Compare two JSON objects and identify differences in keys and values.
XML Formatter
Format and beautify XML with proper indentation and line breaks.
XML Compare Tool
Compare two XML documents and highlight structural and value differences.
Text Compare Tool
Compare two texts line-by-line and identify differences in content.
Base64 Encode
Encode text to Base64 format for data transmission and secure storage.
Base64 Decode
Decode Base64 formatted text back to plain text format.
CSV to JSON Converter
Convert CSV data to JSON format for easier parsing and data manipulation.
JSON to CSV Converter
Convert JSON arrays to CSV format for spreadsheets and data analysis.
URL Encoder
Encode query strings, path parts, and special characters for safe URLs and API requests.
URL Decoder
Decode percent-encoded URL text into readable strings for debugging redirects and tracking links.
JWT Decoder
Decode JWT headers and payloads locally to inspect claims without verifying or transmitting tokens.
UUID Generator
Generate clean UUID values for mock data, database seeds, tests, and quick implementation notes.
Regex Tester
Test regular expressions against sample text and review matches, indexes, and capture groups.
Timestamp Converter
Convert Unix seconds, milliseconds, and ISO dates into UTC and machine-friendly formats.
HTML Entity Encoder
Encode HTML-sensitive characters before placing snippets inside examples, docs, or templates.
HTML Entity Decoder
Decode common HTML entities back into readable markup and text during content QA.
PDF to Word Converter
Convert PDF files to editable Word documents (.docx) instantly.
Word to PDF Converter
Convert Word documents (.doc, .docx) to PDF format instantly.
JSON Minifier
Minify and compress your JSON data by removing spaces, tabs, and newlines to optimize payload size.
XML to JSON Converter
Convert XML data into a clean, parsed JSON format instantly.
HTTP Status Code Finder
Quickly look up HTTP status codes (2xx, 3xx, 4xx, 5xx), their meanings, and typical use cases.
API Request Builder
Draft and configure clean mock HTTP GET/POST/PUT API request templates with custom headers and bodies.
API Response Formatter
Prettify, format, and structure mock API responses for easy debugging and inspection.
Webhook Tester & Payload Mock
Mock webhook payloads and test headers safely for n8n or generic custom workflows.
cURL to Fetch Converter
Convert complex raw command-line cURL queries into clean JavaScript Fetch API code.
SQL Query Formatter
Beautify, clean, and format raw SQL queries with proper capitalizations and indentations.
Robots.txt Tester & Validator
Validate robots.txt directives and test crawl rules for Googlebot or search bots.
Sitemap URL Extractor
Parse and extract all individual URLs from an XML sitemap file layout instantly.
HTML Meta Tag Preview
Preview how your page title and meta description tags look for search engine visibility.
Open Graph Previewer
Preview social media card metadata (Open Graph / Twitter) for Facebook, LinkedIn, or Twitter share links.
FAQ Schema Markup Generator
Create fully compliant JSON-LD FAQ schema blocks to get rich snippets on search results.
Breadcrumb Schema Generator
Generate structured JSON-LD BreadcrumbList schemas to enhance Google search indexing.
API Payload Builder
Create mock JSON payloads with variable keys to test your API pipelines and automations.
Code Snippet Generator
Generate optimized, copy-ready code snippets across Python, React, Next.js, and JavaScript with complete comments and error boundaries.
Project Idea Generator
Brainstorm practical, portfolio-ready project ideas tailored to your programming language, skill level, and target tech stack.
API Endpoint Planner
Structure RESTful API endpoints, request methods, query parameters, and expected JSON response schemas.
Database Schema Planner
Design relational SQL tables, foreign key constraints, or NoSQL document collections for your next application.
React Component Planner
Outline React component props, state variables, custom hooks, and JSX DOM structure before writing code.
JSON to TypeScript Converter
Convert sample JSON responses into starter TypeScript interfaces for API clients and frontend models.
Regex Explainer
Explain common regex tokens in plain English so validation patterns are easier to review and debug.
Cron Expression Generator
Generate simple cron schedules for daily, weekly, monthly, and weekday automation workflows.
Frequently Asked Questions
Are my API tokens, payloads, or schema files sent to any servers?
Many formatting and conversion utilities run in the browser, but you should still avoid pasting production secrets, private API keys, customer data, or credentials into any online tool. Use fake staging payloads when testing workflows.
How do these developer utilities connect with TechIdea's Automation Learning Hub?
They are built to speed up integration setup. For example, when building an n8n webhook workflow to capture form details, you can use the API Request Builder and JSON Formatter to shape sample payloads, then use the FAQ Schema Generator when documenting the workflow on a public page.
Is there any limit to the sizing of data files I can format?
Very large payloads can still slow down your browser. For heavy files, work with smaller samples first, remove sensitive fields, and validate the final version in your local development environment.