Free Developer Tools Tools
High productivity utilities, regex debuggers, schedule builders and developer aids. Professional tools with instant processing, clean outputs, and 100% free access.
AES-256 Encryption & Decryption Studio
Free online AES-256 encryption and decryption tool. Secure messages with military-grade client-side AES-GCM and PBKDF2.
Apache .htaccess to Nginx Converter
Convert Apache .htaccess rewrite rules, 301 redirects, and index directives into clean Nginx configuration try_files and location blocks instantly.
Base58 (Bitcoin & IPFS) Encoder & Decoder
Free online Base58 encoder and decoder. Convert text to Bitcoin and IPFS Base58 format without ambiguous 0/O/I/l characters.
Bcrypt Hash Generator & Verifier
Generate secure Bcrypt password hashes with custom cost factors (rounds 4-16) and verify existing passwords against Bcrypt hashes in real-time.
Binary Calculator & Bitwise Logic Engine
Free online binary calculator. Add, subtract, multiply, and divide binary numbers with step-by-step decimal, hexadecimal, and octal conversions plus bitwise gates.
Code Syntax Highlighter & Exporter
Free online syntax highlighter. Colorize code in VS Code Dark, Monokai, or Light themes with line numbers. Copy standalone embed HTML for blogs.
Content Security Policy (CSP) Builder
Generate strict, secure Content-Security-Policy (CSP) HTTP response headers to protect your website against XSS (Cross-Site Scripting) and clickjacking.
Cron Job Schedule Generator
Generate and validate cron schedules effortlessly. Visual crontab editor, plain-English schedule description, next 5 execution dates, and syntax reference.
CSS Formatter & Stylesheet Beautifier
Free online CSS formatter. Indent, format, and organize CSS code with customizable braces styling, 2-space, 4-space, or tab indentations.
CSV to TSV Tab-Delimited Converter
Free online CSV to TSV converter. Transform comma-separated values into tab-separated values instantly with quotation escaping.
CVE Vulnerability & Exploit Search
Search Common Vulnerabilities and Exposures (CVE) records, CVSS severity scores, affected software versions, and official mitigation advisories from NVD and MITRE.
Fake Identity & Persona Generator
Generate realistic fake identities for developers and QA engineers. Complete with name, address, phone, credit card format, bio, and 1-click JSON export.
High-Speed HMAC Hash Generator
Free online HMAC generator. Create cryptographic HMAC-SHA256 and HMAC-SHA512 signatures with custom secret keys.
HTML Entity Decoder
Free online HTML entity decoder. Decode <, >, &, ", and numeric character references back into plain text and original symbols.
HTML Entity Encoder
Free online HTML entity encoder. Convert <, >, &, ", and special characters into <, >, &, ", or numeric entities instantly.
HTML Formatter & Beautifier
Free online HTML formatter. Clean, indent, and beautify minified HTML markup with 2-space, 4-space, or tab indentations and 1-click copy.
HTML Minifier & Code Compressor
Free online HTML minifier. Compress HTML file sizes by removing comments, extra spacing, and blank lines for improved Google Core Web Vitals.
HTML to Markdown Converter
Convert HTML code and webpage articles into clean GitHub-Flavored Markdown (GFM). Preserves headings, tables, links, code blocks, and lists.
Interactive Markdown Table Generator
Free visual Markdown table generator. Create GitHub Flavored Markdown (GFM) tables with custom alignments, rows, and columns.
Interactive Regex Tester
Interactive regex tester with live match highlights, capture groups breakdown, regex flag controls (g, i, m, s), and ready-to-use pattern presets.
IP Subnet & CIDR Calculator
Calculate IPv4 subnet masks, network addresses, broadcast addresses, wildcard masks, usable host IP ranges, and total assignable hosts from any CIDR prefix (/8 to /32).
JavaScript Formatter & Code Beautifier
Free online JavaScript formatter. Beautify and indent minified JS, TypeScript, and JSON code with customizable bracket styles and indentation.
JSON to CSV Spreadsheet Converter
Free online JSON to CSV converter. Flatten JSON arrays and objects into tabular CSV format for Excel, Google Sheets, or data analysis.
JSON to YAML Converter
Convert JSON data into clean YAML syntax in real-time. 100% in-browser transformation with indentation control and instant copy/download.
JSON Web Token (JWT) Decoder & Debugger
Decode and inspect JSON Web Tokens (JWT) in real-time. View header algorithms, payload claims, expiration timestamps, and signature details.
List Item Randomizer, Shuffler & Draw Picker
Free online list randomizer and shuffler. Shuffle list items using Fisher-Yates randomization, pick lucky draw winners, or sort items A-Z.
Nginx to Apache .htaccess Converter
Convert Nginx location blocks, rewrite rules, and return 301 redirects into standard Apache .htaccess directives and mod_rewrite syntax.
Punycode & IDN International Domain Converter
Free online Punycode converter. Convert international domain names to DNS-compatible ASCII xn-- strings and back instantly.
Security.txt RFC 9116 Generator
Create a standardized security.txt vulnerability disclosure file conforming to RFC 9116. Define security contacts, PGP encryption keys, policies, and acknowledgments.
SQL Query Beautifier & Formatter
Beautify, format, and indent complex SQL queries online. Supports MySQL, PostgreSQL, SQLite, BigQuery, and standard SQL with custom indentation.
TSV to CSV Comma-Separated Converter
Free online TSV to CSV converter. Convert tab-separated values to RFC 4180 compliant comma-separated CSV with 1-click download.
UUID v4 & Secret Key Generator
Generate cryptographically random UUID v4 / GUIDs online in bulk (up to 100). Customizable uppercase, lowercase, hyphens, and braces.
WebRTC & Browser Privacy Leak Tester
Test if your browser exposes your real public or local IP address via WebRTC STUN requests even while connected to a VPN or proxy.
YAML to JSON Converter
Convert YAML configurations into formatted or minified JSON. Fast, private client-side YAML parsing with syntax error highlighting.
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