Document & Text

Minify or beautify JavaScript, TypeScript, CSS, HTML, JSON, XML and SQL with a real lexer per language, so a comment inside a string is not deleted and a line break the code depends on is kept, with the byte saving measured

Syntax highlighting from a real lexer per language, so a URL inside a string is not read as a comment, with 22 languages, 7 themes, and HTML, PNG and copy-as-markup export

Haiku in nine themes, with every line counted after it is built from CMU Pronouncing Dictionary syllable counts rather than a spelling rule, and a seed in the link so a poem can be shared

HTML to Markdown and back, built on a real HTML tree and a CommonMark parser rather than regular expressions, with GitHub tables, a live preview, and a report of everything Markdown could not carry

Format, validate and minify JSON, JSON with comments and JSON5, without changing a single value: every number is written back as the document spelled it. Errors carry a line, a column and the offending line. JSONPath queries, tree view, schema checks and diff

Generate a JSON Schema from a document and see whether it actually validates that document, with every number written back exactly as the file spelled it and formats checked against the calendar and the clock rather than by pattern

Placeholder text in 8 styles, in exactly the word count you asked for, from a seed carried in the shared link so the same configuration reproduces the same words

Markdown editor with a live preview from a real CommonMark 0.31.2 parser, scored 580 of 652 against the specification, plus GitHub tables, task lists and strikethrough, a document outline, and .md and .html export

Build or paste a Markdown table and see it read back cell by cell, with column widths measured in display columns so CJK text, emoji and accents line up, and pipes escaped in the right order

134 printable paper templates - dot grid, graph, isometric, hex, Cornell notes, handwriting guides, planners, calendars, manuscript paper, tablature, game boards and more. True vector PDF, SVG or PNG at any paper size.

Test regex patterns with real offsets, every capture group with its own position, all eight flags including v and y, an explanation that reads the pattern rather than guessing, and a runaway pattern stopped instead of freezing the page

Format SQL from a real tokenizer, so a keyword inside a string literal stays a value, with five dialects whose string and identifier rules differ, comments kept, and the output checked by running it in sqlite

Convert text between 17 cases with every rule stated: punctuation is a separator, acronyms survive, accents survive a URL slug, and Title Case follows a style you name (Chicago, AP or APA) rather than an unattributed word list

Compare texts with side-by-side and unified diff views, line-by-line or character-level comparison, change statistics, and export to patch file

Real AES-256-GCM encryption with a passphrase, plus twelve classical ciphers and encodings that are not encryption, each stating its keyspace and what breaks it

Six readability formulas, each computed from its own publication and shown with the definition, over counts whose rules are stated: characters as a reader sees them, and sentences that know an abbreviation from the end of one

Count words, characters, sentences and paragraphs with every rule stated: characters as a reader sees them rather than as UTF-16 code units, sentences that know Dr. from the end of one, and six readability formulas each shown with the paper it comes from

Format and validate XML without changing the document: CDATA, xml:space="preserve" and mixed content all survive, with errors carrying a line, a caret and a next step, plus XPath queries, a tree view and JSON conversion that names what JSON cannot carry

Test XPath 1.0 against XML with all four result types, not just node-sets, and the namespaces your document declares bound for you including the default one

Format YAML without rewriting it: comments, anchors, quoting, block scalars, multi-document streams and the exact spelling of every number all survive, with YAML 1.1 and 1.2 both offered because the same file means different things under each