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Decode JWT tokens, format SQL queries, minifier code, generate UUIDs v4, test regex, and encode Base64.
Showing 92 Developer Tools Tools
100% Free • Client-Side EngineFast JSON Validator Pro
Fast JSON Validator Pro for instant, privacy-first client-side web processing.
Fast JSON to Markdown Table
Fast JSON to Markdown Table for instant, privacy-first client-side web processing.
Pro JSON Validator Pro
Pro JSON Validator Pro for instant, privacy-first client-side web processing.
Pro JSON to Markdown Table
Pro JSON to Markdown Table for instant, privacy-first client-side web processing.
Smart JSON Validator Pro
Smart JSON Validator Pro for instant, privacy-first client-side web processing.
Smart JSON to Markdown Table
Smart JSON to Markdown Table for instant, privacy-first client-side web processing.
YAML to JSON Converter
Convert YAML configuration strings into formatted JSON objects.
CSV to JSON Array Converter
Convert CSV spreadsheets into structured JSON array objects.
XML to JSON Converter
Convert XML data markup into clean JSON format.
JSON to YAML Converter
Convert JSON structures into clean indented YAML configurations.
JSON to XML Data Converter
Convert JSON data objects into XML document tags.
JSON to TypeScript Interface Generator
Convert raw JSON objects into strongly typed TypeScript interfaces.
JSON to Go Struct Generator
Convert JSON payloads into Go struct definitions with json tags.
JSON to Python Dataclass Generator
Convert JSON payloads into Python dataclass objects.
JSON to JSON Schema Builder
Generate draft-07 JSON Schema validation specs from JSON samples.
package.json Dependencies Validator
Validate package.json syntax, scripts, and dependency version ranges.
JWT Token Mock Builder
Generate un-signed mock JWT tokens with custom payload claims.
Escape JSON String Payload
Escape newlines and quotes inside text to make it valid inside JSON values.
Unescape JSON String Payload
Unescape escaped quotes and newlines back into readable text.
Web App Manifest (manifest.json) Builder
Generate PWA manifest.json specs with app icons and theme colors.
JWT Token Decoder & Inspector
Decode JSON Web Tokens (JWT) to inspect Header, Payload claims, and Expiration dates instantly.
Cron Schedule Expression Generator
Generate standard 5-field cron syntax and get plain-English explanations of execution timing.
Base64 Text & Image Encoder / Decoder
Encode plain text or image files to Base64 strings, or decode Base64 strings back to text.
cURL Command to JavaScript fetch & Python Converter
Convert cURL terminal commands into clean JavaScript fetch(), Node.js axios, or Python requests code.
SQL Query Prettifier & Formatter
Format unreadable single-line SQL queries into clean, indented SQL statements.
Regular Expression (Regex) Tester & Explainer
Test JavaScript Regular Expressions against test strings with instant match highlighting.
JSON Prettifier & Syntax Validator
Format, validate, and minify raw JSON payloads with instant error line pointers.
Meta Graph API App Call Rate & Usage Calculator
Calculate your app's Meta Graph API call rate percentage and model high-traffic webhook performance.
Ultra JSON to XML Converter Pro
Ultra JSON to XML Converter Pro for instant, privacy-first client-side browser processing.
Ultra XML to JSON Converter Pro
Ultra XML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Ultra YAML to JSON Converter Pro
Ultra YAML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Ultra JSON to CSV Array Converter
Ultra JSON to CSV Array Converter for instant, privacy-first client-side browser processing.
Ultra Side-by-Side JSON Diff Checker
Ultra Side-by-Side JSON Diff Checker for instant, privacy-first client-side browser processing.
Ultra JWT Header & Algorithm Inspector
Ultra JWT Header & Algorithm Inspector for instant, privacy-first client-side browser processing.
Ultra cURL Command to Python Requests Converter
Ultra cURL Command to Python Requests Converter for instant, privacy-first client-side browser processing.
Ultra Text Find & Replace Regex Utility
Ultra Text Find & Replace Regex Utility for instant, privacy-first client-side browser processing.
Instant JSON to XML Converter Pro
Instant JSON to XML Converter Pro for instant, privacy-first client-side browser processing.
Instant XML to JSON Converter Pro
Instant XML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Instant YAML to JSON Converter Pro
Instant YAML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Instant JSON to CSV Array Converter
Instant JSON to CSV Array Converter for instant, privacy-first client-side browser processing.
Instant Side-by-Side JSON Diff Checker
Instant Side-by-Side JSON Diff Checker for instant, privacy-first client-side browser processing.
Instant JWT Header & Algorithm Inspector
Instant JWT Header & Algorithm Inspector for instant, privacy-first client-side browser processing.
Instant cURL Command to Python Requests Converter
Instant cURL Command to Python Requests Converter for instant, privacy-first client-side browser processing.
Instant Text Find & Replace Regex Utility
Instant Text Find & Replace Regex Utility for instant, privacy-first client-side browser processing.
Master JSON to XML Converter Pro
Master JSON to XML Converter Pro for instant, privacy-first client-side browser processing.
Master XML to JSON Converter Pro
Master XML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Master YAML to JSON Converter Pro
Master YAML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Master JSON to CSV Array Converter
Master JSON to CSV Array Converter for instant, privacy-first client-side browser processing.
Master Side-by-Side JSON Diff Checker
Master Side-by-Side JSON Diff Checker for instant, privacy-first client-side browser processing.
Master JWT Header & Algorithm Inspector
Master JWT Header & Algorithm Inspector for instant, privacy-first client-side browser processing.
Master cURL Command to Python Requests Converter
Master cURL Command to Python Requests Converter for instant, privacy-first client-side browser processing.
Master Text Find & Replace Regex Utility
Master Text Find & Replace Regex Utility for instant, privacy-first client-side browser processing.
Express JSON to XML Converter Pro
Express JSON to XML Converter Pro for instant, privacy-first client-side browser processing.
Express XML to JSON Converter Pro
Express XML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Express YAML to JSON Converter Pro
Express YAML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Express JSON to CSV Array Converter
Express JSON to CSV Array Converter for instant, privacy-first client-side browser processing.
Express Side-by-Side JSON Diff Checker
Express Side-by-Side JSON Diff Checker for instant, privacy-first client-side browser processing.
Express JWT Header & Algorithm Inspector
Express JWT Header & Algorithm Inspector for instant, privacy-first client-side browser processing.
Express cURL Command to Python Requests Converter
Express cURL Command to Python Requests Converter for instant, privacy-first client-side browser processing.
Express Text Find & Replace Regex Utility
Express Text Find & Replace Regex Utility for instant, privacy-first client-side browser processing.
Pro Max JSON to XML Converter Pro
Pro Max JSON to XML Converter Pro for instant, privacy-first client-side browser processing.
Pro Max XML to JSON Converter Pro
Pro Max XML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Pro Max YAML to JSON Converter Pro
Pro Max YAML to JSON Converter Pro for instant, privacy-first client-side browser processing.
Pro Max JSON to CSV Array Converter
Pro Max JSON to CSV Array Converter for instant, privacy-first client-side browser processing.
Pro Max Side-by-Side JSON Diff Checker
Pro Max Side-by-Side JSON Diff Checker for instant, privacy-first client-side browser processing.
Pro Max JWT Header & Algorithm Inspector
Pro Max JWT Header & Algorithm Inspector for instant, privacy-first client-side browser processing.
Pro Max cURL Command to Python Requests Converter
Pro Max cURL Command to Python Requests Converter for instant, privacy-first client-side browser processing.
Pro Max Text Find & Replace Regex Utility
Pro Max Text Find & Replace Regex Utility for instant, privacy-first client-side browser processing.
Turbo Regex Evaluator Pro
Turbo Regex Evaluator Pro for instant, privacy-first client-side browser processing.
Turbo REST API Tester Helper
Turbo REST API Tester Helper for instant, privacy-first client-side browser processing.
Apex Regex Evaluator Pro
Apex Regex Evaluator Pro for instant, privacy-first client-side browser processing.
Apex REST API Tester Helper
Apex REST API Tester Helper for instant, privacy-first client-side browser processing.
Prime Regex Evaluator Pro
Prime Regex Evaluator Pro for instant, privacy-first client-side browser processing.
Prime REST API Tester Helper
Prime REST API Tester Helper for instant, privacy-first client-side browser processing.
Omega JSON Path & Query Evaluator
Omega JSON Path & Query Evaluator for instant, privacy-first client-side browser processing.
Omega Regex String Substitution Replacer
Omega Regex String Substitution Replacer for instant, privacy-first client-side browser processing.
Omega SQL SELECT Query Builder Pro
Omega SQL SELECT Query Builder Pro for instant, privacy-first client-side browser processing.
Omega Schema.org FAQPage JSON-LD Maker
Omega Schema.org FAQPage JSON-LD Maker for instant, privacy-first client-side browser processing.
Omega Schema.org HowTo JSON-LD Maker
Omega Schema.org HowTo JSON-LD Maker for instant, privacy-first client-side browser processing.
Omega Schema.org Product JSON-LD Maker
Omega Schema.org Product JSON-LD Maker for instant, privacy-first client-side browser processing.
Quantum JSON Path & Query Evaluator
Quantum JSON Path & Query Evaluator for instant, privacy-first client-side browser processing.
Quantum Regex String Substitution Replacer
Quantum Regex String Substitution Replacer for instant, privacy-first client-side browser processing.
Quantum SQL SELECT Query Builder Pro
Quantum SQL SELECT Query Builder Pro for instant, privacy-first client-side browser processing.
Quantum Schema.org FAQPage JSON-LD Maker
Quantum Schema.org FAQPage JSON-LD Maker for instant, privacy-first client-side browser processing.
Quantum Schema.org HowTo JSON-LD Maker
Quantum Schema.org HowTo JSON-LD Maker for instant, privacy-first client-side browser processing.
Quantum Schema.org Product JSON-LD Maker
Quantum Schema.org Product JSON-LD Maker for instant, privacy-first client-side browser processing.
Matrix JSON Path & Query Evaluator
Matrix JSON Path & Query Evaluator for instant, privacy-first client-side browser processing.
Matrix Regex String Substitution Replacer
Matrix Regex String Substitution Replacer for instant, privacy-first client-side browser processing.
Matrix SQL SELECT Query Builder Pro
Matrix SQL SELECT Query Builder Pro for instant, privacy-first client-side browser processing.
Matrix Schema.org FAQPage JSON-LD Maker
Matrix Schema.org FAQPage JSON-LD Maker for instant, privacy-first client-side browser processing.
Matrix Schema.org HowTo JSON-LD Maker
Matrix Schema.org HowTo JSON-LD Maker for instant, privacy-first client-side browser processing.
Matrix Schema.org Product JSON-LD Maker
Matrix Schema.org Product JSON-LD Maker for instant, privacy-first client-side browser processing.
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