Network tools (port number lookup with 25+ services, user-agent parser, query string parser), formatters (SSE event formatter, rate limit header parser, pricing tier builder), crypto/security (TOTP generator with SHA-1, SSH key generator RSA/ECDSA/Ed25519), and time tools (timestamp to date, time zone converter with 14 zones, world clock).
HTTP headers (analyzer, generator for JSON/REST/GraphQL, cache header generator, status code checker), CORS & rate limit (CORS header generator, policy tester, rate limit header parser), env/config (.env parser, variable template generator, AMQP exchange config), and dev config (ESLint configs for React/Node/TypeScript/Next.js, HTTP retry policy builder with exponential/linear/circuit-breaker).
JWT tools (decode, encode/sign HS256, validate expiry/signature), OAuth tools (client setup, PKCE generator/verifier, scope builder, state/token validator), crypto tools (bcrypt PBKDF2, AES-128-CBC encrypt/decrypt, cookie parser/security analyzer, CSP nonce generator/policy builder), SSL scanner, and SAML assertion decoder. (SHA/MD5 hash has its own dedicated page.)
Timers (countdown, event countdown, stopwatch with laps), date math (add/subtract days, difference calculator, week number), converters (date↔timestamp), and time math (add/subtract hours/minutes, duration between times). (Time converter has its own dedicated page.)
Generates RSA (2048/4096) or ECDSA (Curve25519) PGP key pairs with customizable user IDs, expiration dates, and passphrase protection.
Color tools (blindness simulator, palette/shades/tints generator, contrast ratio checker), CSS & media tools (media query generator, CSS to SCSS converter, HTML table to CSV, CSV to HTML table), and generators (conventional commit, Markdown table, Nginx config, IP allowlist). (HTML/CSS/JS minifiers have their own dedicated page.)
Network & Utility Toolkit lets you network tools (port number lookup with 25+ services, user-agent parser, query string parser), formatters (SSE event formatter, rate limit header parser, pricing tier builder), crypto/security (TOTP generator with SHA-1, SSH key generator RSA/ECDSA/Ed25519), and time tools (timestamp to date, time zone converter with 14 zones, world clock).. Everything runs inside your browser — nothing is uploaded to a server. It works on any device with a modern web browser.
Network tools (port number lookup with 25+ services, user-agent parser, query string parser), formatters (SSE event formatter, rate limit header parser, pricing tier builder), crypto/security (TOTP generator with SHA-1, SSH key generator RSA/ECDSA/Ed25519), and time tools (timestamp to date, time zone converter with 14 zones, world clock). It's ideal for developers, designers, and anyone who needs to network tools (port number lookup with 25+ services, user-agent parser, query string parser), formatters (sse event formatter, rate limit header parser, pricing tier builder), crypto/security (totp generator with sha-1, ssh key generator rsa/ecdsa/ed25519), and time tools (timestamp to date, time zone converter with 14 zones, world clock) without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Paste or type your content directly into the provided editor area.
Yes. After the initial page load, Network & Utility Toolkit runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.