Text analysis

Check whether a word or sentence reads the same forwards and backwards.

Convert text to binary digits and back, in bytes or nibbles.

Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case and more.

Count characters, words or bigrams and rank them by frequency.

Replace literal text or a regular expression, with optional capture groups.

Convert HTML to Markdown: headings, lists, links, code blocks, quotes and tables.

Rank the significant words of a text with a TF-IDF score and a stop-word list.

Normalize Markdown: heading spacing, list markers, blank lines and hard breaks.

Check the structure and style of a Markdown document, with line numbers.

Render Markdown (GFM) to clean HTML.

Strip the Markdown syntax and keep the prose, the links and the tables.

Flesch, Flesch-Kincaid, Gunning fog, SMOG, ARI, Coleman-Liau and Dale-Chall.

Parse a regular expression and describe every node, group and flag.

Test a regular expression with flags, inspect matches and capture groups, and preview a replacement.

Rotate the Latin alphabet by any shift, with optional digits and case.

Escape or unescape JSON, XML, HTML, CSV, SQL and regex strings.

Validate, convert, shift, rescale and merge SRT and WebVTT files.

Trim, collapse or strip whitespace from every line, or expand tabs.

Sort lines alphabetically, by length, naturally or randomly, with deduplication.

Count words, characters, lines, sentences and paragraphs, with a reading time.

Inspect code points, UTF-8 bytes, UTF-16 units and normalisation forms.