All the tools
webmasters need – free

My IP

Displays your current IP address, ISP, and location information.

48×

BIP39 Passphrase Generator

Generate BIP39 mnemonics from cryptographically secure randomness and derive seeds. Supports English and German. Validate existing mnemonics.

41×

User Agent Parser

Detect and analyze browser, engine, operating system, CPU architecture, and device type from any user agent string.

38×

Bcrypt

Securely hash and verify passwords and strings using bcrypt (Blowfish-based). Configurable cost factor for optimal security.

34×

Hash Text

Convert any text into cryptographic hashes (MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA3-256, RIPEMD-160) with selectable encoding.

33×

My IP

Displays your current IP address, ISP, and location information.

44× (10 days)

BIP39 Passphrase Generator

Generate BIP39 mnemonics from cryptographically secure randomness and derive seeds. Supports English and German. Validate existing mnemonics.

41× (10 days)

User Agent Parser

Detect and analyze browser, engine, operating system, CPU architecture, and device type from any user agent string.

38× (10 days)

JSON Minifier

Compress and minify JSON strings by removing unnecessary whitespace and line breaks — with size comparison and savings display.

33× (10 days)

Math Calculator

Evaluate mathematical expressions with functions such as sqrt, sin, cos, log, abs, and more — including history and a full function reference.

32× (10 days)

Device Info

Displays information about your current device — screen size, pixel density, user agent, browser features, and more.

IBAN Validator

Validate and analyze IBAN numbers — with checksum validation (MOD 97), country identification, BBAN breakdown, QR-IBAN detection, and various output formats.

JSON Diff

Compare two JSON objects and see the differences at a glance — with color-coded highlighting and a path overview.

JWT Parser

Decode and analyze JSON Web Tokens (JWT) — displays header, payload, and signature in a clear layout.

Redirect Checker

Trace HTTP redirects and display the complete redirect chain with status codes.

SEO Check

Analyze meta tags, headings, canonical tags, OG tags, robots.txt, and structural SEO factors.

Phone Number Analyzer

Analyze and format international phone numbers — with country detection, type (mobile/landline), E.164, RFC 3966, and additional output formats.

Text Diff

Compare two texts and instantly see what was added, removed, or changed — with line-by-line and word-by-word highlighting.

Text Statistics

Analyze a text — characters, words, sentences, paragraphs, bytes, reading time, most frequent words, and more.

URL Parser

Break a URL down into its individual components — protocol, host, path, query parameters, fragment, and more.

User Agent Analyzer

Analyze and decode user agent strings: browser, OS, device type, and more.

User Agent Parser

Detect and analyze browser, engine, operating system, CPU architecture, and device type from any user agent string.

Website Status

Check whether a website is reachable and display the HTTP status code, response time, and server headers.

Base64 File Converter

Convert strings, files, or images to their Base64 representation and decode Base64 back into files.

Base64 Encoder / Decoder

Easily encode and decode strings to and from their Base64 representation. Supports Standard, Base64url, and MIME format.

CSS Minifier

Minify CSS code by removing whitespace and comments and optimizing the output.

Case Converter

Convert text into various case styles such as camelCase, snake_case, PascalCase, kebab-case, and many more.

Date & Time Converter

Convert dates and times into various formats: ISO 8601, RFC 3339, Unix timestamp, Mongo ObjectID, Excel, and more.

Email Normalizer

Normalize email addresses for comparison and deduplication — removes sub-addressing, Gmail dots, domain aliases, and detects duplicates.

Color Converter

Convert colors between HEX, RGB, HSL, HWB, LCH, CMYK, and CSS names with an integrated color picker.

Integer Base Converter

Convert numbers between different bases: Binary, Octal, Decimal, Hexadecimal, Base32, Base36, Base58, Base64.

HTML Minifier

Minify HTML code by removing unnecessary whitespace, comments, and line breaks.

HTML Entities

Encode or decode HTML entities — replace special characters such as <, >, &, and " with their HTML equivalents and vice versa.

JS Minifier

Minify JavaScript code by removing comments and whitespace to reduce file size.

JSON Minifier

Compress and minify JSON strings by removing unnecessary whitespace and line breaks — with size comparison and savings display.

JSON to CSV

Convert JSON arrays to CSV — with automatic column detection, nested object flattening, delimiter selection, and a tabular preview.

JSON ↔ YAML

Convert JSON to YAML and YAML to JSON — live, bidirectional, and with syntax validation.

JSON ↔ TOML

Convert JSON to TOML and TOML to JSON — live, bidirectional, and with syntax validation.

JSON ↔ XML

Convert JSON to XML and XML to JSON — live, bidirectional, and with syntax validation.

List Converter

Process line-based lists: trim, sort, deduplicate, add prefixes and suffixes, change delimiters, and much more.

Markdown → HTML

Convert Markdown to HTML — live, with rendered preview and PDF print function.

NATO Alphabet

Convert text into the NATO phonetic alphabet — ideal for error-free verbal transmission of letters, numbers, and characters.

Numeronym Generator

Generate numeronyms like 'i18n' or 'k8s' — the first and last letters are kept, and the count of characters in between replaces the middle letters.

QR Code Generator

Create QR codes for URLs or any text — with customizable colors, size, and error correction level. Download directly as PNG.

Roman Numerals Converter

Convert Roman numerals to decimal numbers and decimal numbers to Roman numerals with a detailed breakdown.

Slugify

Convert any string into URL-safe, filename-safe, and ID-safe slugs — with umlaut transliteration and configurable options.

TOML ↔ JSON

Convert TOML to JSON and JSON to TOML — live, bidirectional, and with syntax validation.

TOML ↔ YAML

Convert TOML to YAML and YAML to TOML — live, bidirectional, and with syntax validation.

Temperature Converter

Convert temperatures between Kelvin, Celsius, Fahrenheit, Rankine, Delisle, Newton, Réaumur, and Rømer.

Text ↔ ASCII Binary

Convert text to its binary ASCII representation and decode binary code back into readable text.

Text ↔ Unicode

Convert text to Unicode code points and back. Supports U+XXXX notation, JavaScript escapes, HTML entities, and more.

URL Encoder / Decoder

Encode text into URL format (percent-encoding) and decode it back — live and bidirectional.

WiFi QR Code

Create QR codes for Wi-Fi networks — simply scan and connect instantly. With color selection and PNG download.

XML ↔ JSON

Convert XML to JSON and JSON to XML — live, bidirectional, and with syntax validation.

YAML ↔ JSON

Convert YAML to JSON and JSON to YAML — live, bidirectional, and with syntax validation.

YAML ↔ TOML

Convert YAML to TOML and TOML to YAML — live and bidirectional with full syntax validation.

DNS Lookup

Query DNS records: A, AAAA, MX, NS, TXT, CNAME, SOA, and more.

IPv4 Address Converter

Convert IPv4 addresses between dotted decimal, binary, hex, octal, and integer representations, as well as various IPv6 formats.

IPv4 Range Expander

Calculate the minimal set of CIDR blocks for an IPv4 address range — from start IP to end IP, with block size, host count, and a copyable CIDR list.

IPv4 Subnet Calculator

Calculate all details for an IPv4 CIDR block: network address, subnet mask, broadcast address, usable hosts, binary representation, and subnet splitting.

IPv6 ULA Generator

Generate unique local IPv6 addresses (ULA) per RFC 4193 — with random Global ID, subnet selection, and a full prefix overview.

MAC Address Generator

Generate random MAC addresses with a custom prefix, selectable delimiter, and uppercase or lowercase formatting.

MAC Address Lookup

Identify the manufacturer and device information from a MAC address — with OUI lookup, address properties, and EUI-64 representation.

My IP

Displays your current IP address, ISP, and location information.

Reverse IP Lookup

Find all domains hosted on an IP address using reverse DNS and hosting data.

BIP39 Passphrase Generator

Generate BIP39 mnemonics from cryptographically secure randomness and derive seeds. Supports English and German. Validate existing mnemonics.

Basic Auth Generator

Generate a Base64-encoded Basic Auth header from a username and password — including decoding and usage examples.

Bcrypt

Securely hash and verify passwords and strings using bcrypt (Blowfish-based). Configurable cost factor for optimal security.

HMAC Generator

Compute a hash-based message authentication code (HMAC) using a secret key and your preferred hash function.

Hash Text

Convert any text into cryptographic hashes (MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA3-256, RIPEMD-160) with selectable encoding.

OTP Generator

Generate and validate time-based one-time passwords (TOTP) for two-factor authentication — RFC 6238 compliant, fully in-browser.

Password Generator

Generate cryptographically secure passwords with configurable length and character set.

Password Strength Analyzer

Assess your password's strength with this client-side password strength analyzer and crack time estimator.

RSA Key Pair Generator

Generate new random RSA private and public key PEM certificates directly in the browser — cryptographically secure via the Web Crypto API.

SRI Hash Generator

Generate Subresource Integrity (SRI) hashes for external scripts and stylesheets.

SSL Certificate Checker

Analyze SSL/TLS certificates: validity period, issuer, encryption details, and more.

String Obfuscator

Obfuscate strings such as secrets, IBANs, or tokens — configurable with visible leading/trailing characters and a custom masking character.

Text Encryption

Encrypt and decrypt plaintext using AES, TripleDES, Rabbit, or RC4 — with selectable mode and output format.

Token Generator

Generate cryptographically secure tokens with a selectable character set and configurable length (1–512 characters).

Benchmark Builder

Compare the execution speed of multiple JavaScript snippets — with ops/s, time per iteration, and relative performance evaluation.

Chmod Calculator

Interactively calculate Unix file permissions — with octal value, symbolic notation, special bits (SUID/SGID/Sticky), and a ready-to-use chmod command.

Chronometer

Stopwatch with lap time recording — measure the duration of operations, capture lap times, and export results.

Crontab Generator

Create and validate crontab expressions — with visual fields, common templates, a human-readable schedule description, and upcoming execution times.

ETA Calculator

Calculate the estimated remaining time and completion timestamp of a task — useful for downloads, data processing, or other steadily progressing operations.

Emoji Picker

Browse and copy emojis with a single click — including Unicode code point, HTML entity, CSS, and JavaScript representation for every emoji.

HTML Editor

Online WYSIWYG editor with instant HTML source view — format text visually and get the finished HTML code right away.

HTTP Status Codes

All HTTP status codes at a glance — with name, meaning, and category. Searchable and filterable.

JSON Formatter

Format and prettify JSON strings into a readable layout — with syntax highlighting, line numbers, key sorting, and statistics.

Keycode Info

Display the JavaScript keyCode, code, location, and modifier keys for any pressed key.

Lorem Ipsum Generator

Generate placeholder text with configurable paragraph, sentence, and word counts — optionally with the classic opening and HTML output.

MIME Types

Convert MIME types to file extensions and vice versa — with a complete reference table covering over 100 file formats.

Math Calculator

Evaluate mathematical expressions with functions such as sqrt, sin, cos, log, abs, and more — including history and a full function reference.

Open Graph Generator

Generate Open Graph and social media meta tags for your website — compatible with Facebook, Twitter/X, LinkedIn, and more.

Percentage Calculator

Calculate percentage values, rates, percentage changes, and base values — five calculation modes presented clearly at a glance.

Regex Cheatsheet

Overview of all JavaScript regex syntax elements: character classes, anchors, quantifiers, groups, flags, methods, and common patterns.

Regex Tester

Test regular expressions in real time — with match highlighting, group display, replace function, and example patterns.

SQL Formatter

Format and prettify SQL queries with syntax highlighting, line numbers, and support for Standard SQL, MySQL, PostgreSQL, T-SQL, and SQLite.

SVG Placeholder Generator

Create SVG placeholder images for your applications — with customizable size, colors, text, and style. Download as SVG or copy as a data URI.

ULID Generator

Generate Universally Unique Lexicographically Sortable Identifiers (ULIDs) — 128-bit IDs in Crockford Base32, lexicographically sortable, with timestamp decoding.

UUID Generator

Generate Universally Unique Identifiers (UUIDs) of versions v1, v4, and v7 with configurable format and batch generation (up to 100 UUIDs).

XML Formatter

Format and prettify XML documents with syntax highlighting, line numbers, indentation, and structure statistics.

YAML Formatter

Format and prettify YAML documents with syntax highlighting, line numbers, indentation correction, and structure statistics.