Developer Tools
Essential developer utilities for code formatting, API testing, regex validation, and more.
.htaccess Generator
Create .htaccess rules for HTTPS, redirects, and IP blocking.
API Abuse Scenarios
Generate test cases for API rate limiting and logic flaws.
API Latency Simulator
Simulate API response delays for testing application behavior under latency.
API Mock Data Generator
Generate realistic mock data for API testing (users, products, etc.).
API Rate Limit Simulator
Simulate request bursts to visualize token bucket algorithms.
ASCII Table
Complete ASCII code reference table.
Base64 File Encoder
Encode files to Base64 format entirely in your browser.
Bcrypt Generator
Generate secure Bcrypt hashes with custom cost factors.
Code Complexity Estimator
Calculate cyclomatic complexity and other code quality metrics.
CORS Policy Tester
Analyze CORS headers to understand cross-origin risks.
Cron Expression Builder
Visual cron expression builder with human-readable descriptions.
Crontab Expression Explainer
Explain cron expressions in plain English. Visual field breakdown, preset examples, and next 8 scheduled run times calculator.
CSS Minifier
Minify CSS code for better performance.
CSS Triangle Generator
Generate CSS code for triangles.
Dependency Risk Scanner
Parse package.json to find risky patterns.
Diff Checker
Compare two text files and highlight differences line-by-line.
Environment Variable Diff
Compare two .env files safely in your browser to find missing keys.
Git Command Explorer
Find the right Git command for your task.
Grid Generator
Visual tool to generate CSS Grid layouts.
Htaccess Redirect Generator
Generate 301/302 redirects for .htaccess.
HTML Accessibility Checker
Check HTML for WCAG 2.1 accessibility issues and get remediation tips.
HTML Entity Decoder
Convert HTML entities back to characters.
HTML Entity Encoder
Encode special characters to HTML entities and decode them back. Prevent XSS and display issues in web pages.
HTML Minifier
Compress HTML code to reduce file size.
HTTP Status Code Checker
List and explanation of HTTP status codes.
HTTP Status Code Reference
Complete HTTP status code reference from 1xx to 5xx. Searchable with color-coded categories and detailed descriptions for each code.
HTTP Status Explainer
Understand what specific status codes mean security-wise.
Image to Base64 Converter
Convert images to Base64 encoding with drag-and-drop. Output as raw Base64, data URI, CSS background, HTML img tag, or Markdown.
Input Validation Regex
Generate regex and rules for input fields.
JSON Diff
Compare two JSON objects and highlight differences.
JSON Formatter
Format, validate, and beautify your JSON data.
JSON to CSV Converter
Convert JSON data to CSV/Excel format instantly. Supports nested objects and arrays with smart flattening.
JSON to PHP Array
Convert JSON objects into modern PHP array syntax [].
JSON to XML Converter
Convert JSON data to XML format with pretty printing, custom root element names, and sample data. Copy or paste your JSON instantly.
JSON to YAML
Convert JSON to YAML format.
JSON Validator
Check if your JSON code is valid and find errors.
Log Redaction Preview
Paste logs to see what sensitive data (PII, Credits) gets masked.
Log Sanitizer Tool
Remove PII, credentials, and sensitive data from log files before sharing.
Markdown Preview
Write Markdown and see the HTML result in real-time.
Markdown to HTML Converter
Convert Markdown to clean HTML with live preview. Supports GitHub Flavored Markdown, tables, and code blocks.
Mime Type List
Searchable list of MIME types and extensions.
OAuth Flow Visualizer
Visualize standard OAuth 2.0 flows.
OpenAPI Spec Validator
Validate OpenAPI 3.0 and Swagger 2.0 specifications for errors.
PHP Serializer
Convert JSON to PHP serialized strings and vice versa for debugging.
Port List
Searchable list of common TCP/UDP ports.
Regex Explainer
Translate complex regex patterns into plain English.
Regex Playground
Interactive regex tester with syntax highlighting, explanations, and match visualization.
Regex Tester
Test your JS regular expressions with real-time highlighting.
Secret Rotation Impact
Estimate downtime and steps for rotating secrets.
Secure Coding Checklist
Generate a checklist for specific languages (Java, JS, Python).
Secure Coding Checklist
Generate secure coding checklists for JavaScript, Python, Java, and PHP.
SQL Query Formatter
Format and beautify SQL queries for better readability.
Timezone Converter for APIs
Convert timestamps between timezones for API development and testing.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. See current timestamp and convert in both directions.
URL Encoder / Decoder
Encode or decode URL strings and query parameters. Handle special characters, Unicode, and percent-encoding.
URL Parser
Parse URLs into their components (protocol, host, path, params).
UUID Bulk Generator
Generate hundreds of UUIDs at once for testing and development.
UUID Generator
Generate Version 4 UUIDs (Universally Unique Identifiers) instantly.
VAPT Scope Builder
Generate professional VAPT scope text for proposals.
Webhook Payload Validator
Validate HMAC signatures for common webhooks (Stripe, GitHub).
XML Formatter
Format XML strings to make them readable.
XML to JSON Converter
Parse XML and convert it to clean JSON format.
YAML JSON Converter
Convert between YAML and JSON formats with validation.
YAML to JSON
Convert YAML to JSON format.
.htaccess Generator
Create .htaccess rules for HTTPS, redirects, and IP blocking.
API Abuse Scenarios
Generate test cases for API rate limiting and logic flaws.
API Latency Simulator
Simulate API response delays for testing application behavior under latency.
API Mock Data Generator
Generate realistic mock data for API testing (users, products, etc.).
API Rate Limit Simulator
Simulate request bursts to visualize token bucket algorithms.
ASCII Table
Complete ASCII code reference table.
Base64 File Encoder
Encode files to Base64 format entirely in your browser.
Bcrypt Generator
Generate secure Bcrypt hashes with custom cost factors.
Code Complexity Estimator
Calculate cyclomatic complexity and other code quality metrics.
CORS Policy Tester
Analyze CORS headers to understand cross-origin risks.
Cron Expression Builder
Visual cron expression builder with human-readable descriptions.
Crontab Expression Explainer
Explain cron expressions in plain English. Visual field breakdown, preset examples, and next 8 scheduled run times calculator.
CSS Minifier
Minify CSS code for better performance.
CSS Triangle Generator
Generate CSS code for triangles.
Dependency Risk Scanner
Parse package.json to find risky patterns.
Diff Checker
Compare two text files and highlight differences line-by-line.
Environment Variable Diff
Compare two .env files safely in your browser to find missing keys.
Git Command Explorer
Find the right Git command for your task.
Grid Generator
Visual tool to generate CSS Grid layouts.
Htaccess Redirect Generator
Generate 301/302 redirects for .htaccess.
HTML Accessibility Checker
Check HTML for WCAG 2.1 accessibility issues and get remediation tips.
HTML Entity Decoder
Convert HTML entities back to characters.
HTML Entity Encoder
Encode special characters to HTML entities and decode them back. Prevent XSS and display issues in web pages.
HTML Minifier
Compress HTML code to reduce file size.
HTTP Status Code Checker
List and explanation of HTTP status codes.
HTTP Status Code Reference
Complete HTTP status code reference from 1xx to 5xx. Searchable with color-coded categories and detailed descriptions for each code.
HTTP Status Explainer
Understand what specific status codes mean security-wise.
Image to Base64 Converter
Convert images to Base64 encoding with drag-and-drop. Output as raw Base64, data URI, CSS background, HTML img tag, or Markdown.
Input Validation Regex
Generate regex and rules for input fields.
JSON Diff
Compare two JSON objects and highlight differences.
JSON Formatter
Format, validate, and beautify your JSON data.
JSON to CSV Converter
Convert JSON data to CSV/Excel format instantly. Supports nested objects and arrays with smart flattening.
JSON to PHP Array
Convert JSON objects into modern PHP array syntax [].
JSON to XML Converter
Convert JSON data to XML format with pretty printing, custom root element names, and sample data. Copy or paste your JSON instantly.
JSON to YAML
Convert JSON to YAML format.
JSON Validator
Check if your JSON code is valid and find errors.
Log Redaction Preview
Paste logs to see what sensitive data (PII, Credits) gets masked.
Log Sanitizer Tool
Remove PII, credentials, and sensitive data from log files before sharing.
Markdown Preview
Write Markdown and see the HTML result in real-time.
Markdown to HTML Converter
Convert Markdown to clean HTML with live preview. Supports GitHub Flavored Markdown, tables, and code blocks.
Mime Type List
Searchable list of MIME types and extensions.
OAuth Flow Visualizer
Visualize standard OAuth 2.0 flows.
OpenAPI Spec Validator
Validate OpenAPI 3.0 and Swagger 2.0 specifications for errors.
PHP Serializer
Convert JSON to PHP serialized strings and vice versa for debugging.
Port List
Searchable list of common TCP/UDP ports.
Regex Explainer
Translate complex regex patterns into plain English.
Regex Playground
Interactive regex tester with syntax highlighting, explanations, and match visualization.
Regex Tester
Test your JS regular expressions with real-time highlighting.
Secret Rotation Impact
Estimate downtime and steps for rotating secrets.
Secure Coding Checklist
Generate a checklist for specific languages (Java, JS, Python).
Secure Coding Checklist
Generate secure coding checklists for JavaScript, Python, Java, and PHP.
SQL Query Formatter
Format and beautify SQL queries for better readability.
Timezone Converter for APIs
Convert timestamps between timezones for API development and testing.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. See current timestamp and convert in both directions.
URL Encoder / Decoder
Encode or decode URL strings and query parameters. Handle special characters, Unicode, and percent-encoding.
URL Parser
Parse URLs into their components (protocol, host, path, params).
UUID Bulk Generator
Generate hundreds of UUIDs at once for testing and development.
UUID Generator
Generate Version 4 UUIDs (Universally Unique Identifiers) instantly.
VAPT Scope Builder
Generate professional VAPT scope text for proposals.
Webhook Payload Validator
Validate HMAC signatures for common webhooks (Stripe, GitHub).
XML Formatter
Format XML strings to make them readable.
XML to JSON Converter
Parse XML and convert it to clean JSON format.
YAML JSON Converter
Convert between YAML and JSON formats with validation.
YAML to JSON
Convert YAML to JSON format.
No tools found
Try a different search term
Other Categories
View AllAbout Developer Tools
Our developer tools are designed with developers, designers, and digital professionals in mind. Each tool is built to be fast, secure, and easy to use, with a focus on privacy and client-side processing whenever possible. All tools are completely free to use with no registration required.