Text, encoding and data utilities

Encode text to Base64 or decode Base64 back to text, with UTF-8 handling and a URL-safe base64url option.

Converters

Percent-encode or decode text and URLs with encodeURIComponent or encodeURI, and see a table of every character that changed.

Converters

Encode text to HTML entities (reserved characters, all special characters or all non-ASCII) or decode entities, with a searchable entity table.

Converters

Break text into characters and show each one's code point, UTF-8 bytes, UTF-16 units, HTML entity, JS escape and a broad category.

Converters

Convert identifiers and text between camelCase, PascalCase, snake_case, kebab-case, Title Case and other formats, with case detection.

Converters

Convert a title into a URL-safe slug with accent transliteration, hyphen or underscore separators, stop-word removal and a maximum length.

Converters

Count words, characters with and without spaces, sentences, paragraphs and lines, with reading and speaking time and the 10 most frequent words.

Developer utilities

Generate lorem ipsum placeholder text as paragraphs, sentences or words, from classic Latin, hipster or plain English word lists.

Generators

Test JavaScript regular expressions with live match highlighting, capture groups, replace preview and plain-English pattern explanations.

Developer utilities

Test JavaScript regular expressions with live match highlighting, numbered and named groups, a token-by-token explanation and replace mode.

Developer utilities

Test glob patterns against file paths with *, **, ?, bracket classes, {a,b} braces and negated patterns, plus a pattern-by-path match matrix.

Developer utilities

Convert Unix timestamps in seconds or milliseconds to ISO 8601, UTC, local and IANA timezone dates, or turn a date back into a timestamp.

Converters

Convert between hex, binary, decimal, and octal with bit visualization and bitwise operations

Converters

Convert between bytes and PB in decimal (KB, MB, GB, TB) and binary (KiB, MiB, GiB, TiB) units, with bit counts and transfer times at common speeds.

Converters

Generate random UUID v4 or time-ordered UUID v7 values, up to 100 at a time, in standard, no-dash or uppercase format.

Generators

Generate UUIDv7, ULID and NanoID identifiers in bulk with crypto.getRandomValues, and decode the timestamp inside a UUIDv7 or ULID.

Generators

Generate up to 1,000 rows of fake test data from a custom schema of typed fields, as JSON, CSV or PostgreSQL and MySQL INSERTs.

Generators

Preview Markdown as rendered HTML while you type, with tables, fenced code blocks, strikethrough and images, and copy the HTML.

Formatters

Edit a table in a spreadsheet-style grid and copy it as a Markdown table, with column alignment, padded output and CSV or Markdown import.

Generators

Convert Markdown to HTML with GFM tables and strikethrough, a live preview and a full HTML page download. Also available as a REST API.

Converters

Generate a nested Markdown table of contents from your headings with GitHub- or GitLab-style anchor links, skipping headings in code fences.

Generators

Render Mermaid flowchart code as a diagram with live preview, subgraphs, light or dark theme, and SVG or PNG export.

Developer utilities

Format and minify SQL queries with 2-space, 4-space or tab indentation and uppercase, lowercase or capitalized keywords.

Formatters

Format, beautify, and validate XML with syntax highlighting, tree view toggle, and minification

Formatters

Format or minify HTML with adjustable indentation, preview the rendered page, and flag unclosed tags, duplicate IDs and missing alt text.

Formatters

Parse logs with auto-detection of JSON Lines, Python logging, syslog and nginx access formats, then filter by level and search.

Formatters

Decode binary protobuf payloads with optional .proto schemas. Inspect field tags, wire types, and nested messages.

Developer utilities

Convert PNG, JPG, GIF, WebP, and SVG images to Base64 encoding with data URI, CSS, and HTML formats

Converters

Generate QR codes for URLs, text, WiFi, email, phone numbers and vCards with custom colors and error correction, as SVG or PNG.

Generators

Turn up to 20 characters of text into ASCII art banners in 10 FIGlet-style fonts for README files, terminal output and code comments.

Generators