All tools

41 utilities in one place. This list is generated from the site's own pages, so a tool cannot exist here and be missing from it.

Language

🌐

Translator

Translate between Chinese, English, German, French and Spanish, plus Catalan, Basque, Galician, Irish and Esperanto. Runs on an open-source model we host ourselves, with no third-party translation API.

Text & Writing

Case Converter

Convert text between eight letter cases instantly: uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case and kebab-case.

🔤

Character Counter

Count characters with and without spaces, letters, digits and punctuation, plus a letter frequency table for any text.

🧹

Duplicate Line Remover

Strip duplicate lines from lists and exports, with case and whitespace options, sorting, and a live before/after count.

📄

Lorem Ipsum Placeholder Generator

Generate lorem ipsum placeholder text by paragraph, sentence, word or list count, with an option to start with the classic opening.

⚖️

Text Diff

Compare two blocks of text line by line with a real longest-common-subsequence diff. Added and removed lines highlighted.

📝

Word Counter

Count words, characters, sentences and paragraphs as you type, with an estimated reading time. Runs entirely in your browser.

📊

Word Frequency Counter

Paste any text and get a ranked word frequency list with counts and share of text, optional stop-word removal and case folding. Runs entirely in your browser.

Developer

⇄

Base64 Encoder & Decoder

Encode plain text to Base64 or decode Base64 back to text, including URL-safe variants. Runs entirely in your browser.

🗓️

Cron Expression Generator

Build a standard 5-field cron expression from plain choices - every hour, daily at a time, weekly, monthly - with the schedule spelled out in words underneath.

📋

CSV to JSON Converter

Convert CSV to JSON in your browser, with quoted-field support, custom delimiters and automatic number conversion.

HTML Entity Encoder

Escape HTML special characters into entities before they go into markup, or decode a run of entities back into readable text. Live, both directions, in your browser.

</>

HTML Formatter

Indent and line-break minified HTML so nested tags are readable, with void elements and comments handled so the structure still matches the source.

{ }

JSON Formatter & Validator

Format messy JSON with clean indentation, minify it back, or find the exact position of a syntax error. Runs locally in your browser.

📑

JSON to CSV

Convert a JSON array of objects into CSV with a header row built from every key, correct quoting for commas and newlines, and a choice of delimiter.

🔏

JWT Decoder

Paste a JSON Web Token to decode its header and payload, with expiry and issued-at times rendered as readable timestamps and a clear note on what decoding does not prove.

🖋️

Markdown to HTML

Convert Markdown to HTML you can paste into a CMS, with headings, lists, links, inline code and block quotes handled and every angle bracket escaped first.

Regex Tester

Test a regular expression against sample text in your browser, with flag toggles, a live match list and every capture group broken out per match.

URL Encoder & Decoder

Percent-encode or decode URLs and query-string values, with the option to encode an entire URL or only a parameter value.

🆔

UUID / GUID Generator

Generate RFC 4122 version 4 UUIDs in bulk, ready to copy as plain text, JSON, SQL or CSV.

Security

🔑

Strong Password Generator

Generate strong random passwords using the browser's cryptographic random source. Choose length and character sets; nothing leaves your device.

🛡️

Password Strength Checker

Score a password on length and character variety, see the estimated entropy and offline crack time, and get per-rule feedback. Nothing is transmitted or stored.

🎲

Random Number Generator

Generate random integers in any range using your browser's cryptographic RNG, one at a time or in a batch, with or without repeats. No server involved.

SHA-1 and SHA-256 Hash Generator

Compute SHA-256 or SHA-1 hashes of any text using the browser's Web Crypto API, with a quick check for known weak inputs.

Web & SEO

📅

Days Between Dates

Count the exact number of days between two dates with the week breakdown, the inclusive count and the weekday each end falls on. Leap years are handled.

🏷️

Meta Tag Generator

Generate title, description and Open Graph meta tags with live length checks against search result truncation limits.

🐌

URL Slug Generator

Turn any title into a clean, lowercase, hyphenated URL slug with accent folding and optional stop-word trimming.

🔗

UTM Link Builder

Build UTM-tagged campaign URLs with source, medium and campaign parameters, with naming rules that keep analytics reports clean.

Converters

🖼️

Base64 Image Encoder

Turn an image file into a Base64 data URL you can paste straight into HTML or CSS, or decode a data URL back into a viewable image. Runs in your browser.

💧

Color Picker From Image

Upload an image and click anywhere on it to read the exact pixel colour as HEX and RGB, with a running palette of every colour you pick.

🎨

HEX to RGB Converter

Convert HEX color codes to RGB and HSL and back again, with shorthand #rgb support, invalid-value warnings and a live swatch you can compare against your palette.

₀₁

Number Base Converter

Convert a number between binary, octal, decimal and hexadecimal at once, with live validation and bit-width context for the value you typed.

Ⅻ

Roman Numeral Converter

Convert a number into Roman numerals or read Roman numerals as a number, with validation that explains exactly what it rejected. Range 1 to 3,999.

🕐

Unix Timestamp Converter

Convert a Unix epoch timestamp into a readable UTC and local date, or turn any date and time back into epoch seconds and milliseconds - live as you type.

Calculators

🧮