52 tools
Developer Tools
JSON formatters, Base64 encoders, JWT decoders, UUID generators, and more developer utilities.
JSON tools stay on dedicated routes
High-use JSON utilities keep their direct URLs for search, bookmarks, and existing references. This developer catalog links the canonical tools and keeps the broader JSON workspace discoverable from one hub.
Open JSON tools hub
Browse the full JSON workspace by validation, conversion, schema, and encoding task.
Open →JSON Formatter
Canonical formatter for validation, indentation, minification, and clipboard cleanup.
Open →JSON Repair
Fix malformed JSON from LLM output, logs, comments, and trailing commas.
Open →JSON to TypeScript
Generate interfaces from sample JSON without leaving the short legacy route.
Open →JSON Formatter & Validator
Format, validate, and beautify JSON instantly. Paste minified JSON from any API and get clean, readable output. Free, no signup.
Open tool →Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 strings back to readable text. Instant, client-side, no data sent to any server.
Open tool →JWT Decoder
Decode JWT tokens and inspect header, payload, and signature. Paste any JWT and see the claims instantly. No data stored or transmitted.
Open tool →UUID Generator
Generate UUID v4 random identifiers instantly. Single or bulk generation, copy to clipboard in one click. RFC 4122 compliant.
Open tool →Regex Tester
Test and debug regular expressions with live match highlighting. Supports JavaScript regex syntax with flags. Instant feedback as you type.
Open tool →Cron Expression Generator
Build and validate cron expressions with a visual editor. See upcoming scheduled run times using standard five-field cron syntax.
Open tool →Hash Generator — SHA-256 & SHA-512
Generate SHA-1, SHA-256, and SHA-512 hashes from any text string. Instant, client-side, with zero data transmission.
Open tool →Color Converter — HEX, RGB, HSL
Convert color values between HEX, RGB, RGBA, and HSL formats instantly. Copy any format to clipboard for CSS use.
Open tool →Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports milliseconds and seconds. Shows UTC and local time.
Open tool →Text Diff Checker
Compare two blocks of text and see differences highlighted line by line. Useful for code review, document comparison, and finding changes.
Open tool →CSV to JSON Converter
Convert CSV data into structured JSON in your browser with configurable headers and clean formatted output.
Open tool →Excel to JSON Converter
Convert Excel spreadsheets into JSON locally in your browser and preview structured rows before copying the output.
Open tool →JSON Diff Checker
Compare two JSON documents and inspect additions, removals, and changed values in a structured side-by-side view.
Open tool →JSON Error Analyzer
Analyze invalid JSON and get detailed syntax explanations, line locations, and practical suggestions for common errors.
Open tool →JSON Escape Tool
Escape JSON strings for safe embedding in source code, configuration, logs, and API request payloads.
Open tool →JSON Flatten & Unflatten
Flatten nested JSON into dot notation or rebuild flat key paths into nested objects directly in your browser.
Open tool →JSON Minifier
Remove unnecessary whitespace from JSON to reduce size while validating that the input remains valid JSON.
Open tool →JSONPath Query Tool
Run JSONPath expressions against JSON data and inspect matched values using a browser-based query interface.
Open tool →JSON Repair Tool
Repair common JSON mistakes such as trailing commas, single quotes, comments, and incomplete structures.
Open tool →JSON Schema Validator
Validate JSON data against a JSON Schema and review detailed errors for fields, types, and constraints.
Open tool →JSON Schema Generator
Generate a draft JSON Schema from sample JSON data and customize the resulting field definitions.
Open tool →JSON Search Tool
Search keys and values across large JSON documents and jump directly to matching paths and content.
Open tool →JSON Size Analyzer
Measure JSON byte size, nesting depth, key counts, and structural complexity before sending or storing data.
Open tool →JSON Key Sorter
Sort JSON object keys alphabetically while preserving nested values and producing clean formatted output.
Open tool →JSON Stringify Tool
Convert JSON data into an escaped string suitable for JavaScript, APIs, environment variables, and logs.
Open tool →JSON to C# Converter
Generate typed C# classes from JSON with nested models and serialization-friendly property definitions.
Open tool →JSON to CSV Converter
Convert JSON arrays into CSV rows for spreadsheets, data imports, reporting, and downloadable tabular output.
Open tool →JSON to Excel Converter
Convert JSON arrays into an Excel workbook for analysis, sharing, and spreadsheet-based workflows.
Open tool →JSON to Go Struct
Generate Go structs with JSON tags from sample data, including nested objects, arrays, and inferred field types.
Open tool →JSON to Java Classes
Generate Java model classes from JSON with nested types and serialization-ready field declarations.
Open tool →JSON to Kotlin Data Classes
Generate Kotlin data classes from JSON with inferred nullable types, nested models, and serialization options.
Open tool →JSON to Markdown Table
Convert JSON arrays into readable Markdown tables for documentation, issues, reports, and README files.
Open tool →JSON to PHP Classes
Generate typed PHP classes from JSON with nested objects and modern property declarations.
Open tool →JSON to Python Dataclasses
Generate Python dataclasses with type hints from JSON, including nested objects and collection types.
Open tool →JSON to Rust Structs
Generate Rust structs from JSON with Serde derives, field attributes, nested types, and inferred collections.
Open tool →JSON to SQL Converter
Convert JSON records into SQL insert statements for database imports, fixtures, and development workflows.
Open tool →JSON to Swift Codable
Generate Swift Codable structs from JSON with nested models, coding keys, and inferred optional fields.
Open tool →JSON Table Viewer
Display JSON arrays as a readable table for quick inspection, sorting, and understanding tabular records.
Open tool →JSON to TypeScript
Generate TypeScript interfaces from JSON with nested types, arrays, optional fields, and reusable declarations.
Open tool →JSON to XML Converter
Convert JSON objects and arrays into readable XML with configurable root elements and formatted output.
Open tool →JSON to YAML Converter
Convert JSON into clean YAML for configuration files, deployment manifests, and developer documentation.
Open tool →JSON Token Counter
Estimate language-model token usage for JSON and compare counts for common model tokenization schemes.
Open tool →JSON Tree Viewer
Explore JSON in a collapsible tree with clear value types, nested paths, and expandable objects and arrays.
Open tool →JSON Unescape Tool
Decode escaped JSON strings into readable text and structured JSON while identifying invalid escape sequences.
Open tool →JSONC to JSON Converter
Remove comments and trailing commas from JSONC configuration files to produce standards-compliant JSON.
Open tool →SQL to JSON Converter
Convert SQL insert statements into structured JSON records for migrations, fixtures, and data inspection.
Open tool →XML to JSON Converter
Convert XML documents into formatted JSON with options for attributes, arrays, and nested elements.
Open tool →YAML to JSON Converter
Convert YAML configuration and data files into validated, formatted JSON directly in your browser.
Open tool →Regex for Email Validation
Test and copy practical regex patterns for email address validation, including common JavaScript validation use cases.
Open tool →Discord Timestamp Generator
Generate Discord markdown timestamp codes from any date and time. Instantly copy the code to use in Discord messages and posts.
Open tool →Bulk UUID Generator — Download as CSV
Generate hundreds of UUID v4 identifiers at once and download them as a CSV file for database seeds and test collections.
Open tool →QR Code Generator
Generate QR codes from text or URLs locally in your browser. Download PNG images instantly with no server upload.
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