Text Tools

ArrayKit's Text tools cover the everyday string work developers, writers and testers do dozens of times a day. The Word and Character Counter gives live counts of words, characters, sentences, lines, UTF-8 bytes and an approximate token estimate as you type. The Case Converter switches identifiers between camelCase, snake_case, kebab-case and PascalCase, while the Slug Generator turns any title into a clean, URL-safe slug with batch mode. Need placeholder copy for a layout? The Lorem Ipsum Generator produces paragraphs, sentences or words on demand, and the Mock Data Generator spins up fake JSON with names, emails, UUIDs, dates and prices for seeding databases and stubbing APIs. Everything runs in your browser: your text is processed locally on your device and nothing is uploaded. Open a tool, paste or configure, and get clean output in seconds.

• Case Converter — Convert text between camelCase, snake_case, kebab-case, PascalCase and more.
• Lorem Ipsum Generator — Generate placeholder lorem ipsum paragraphs, sentences or words.
• Mock Data Generator — Generate fake JSON data — names, emails, UUIDs, dates and more.
• Word & Character Counter — Count words, characters, sentences, lines, bytes and approximate tokens, live.
• Slug Generator — Turn a title into a clean, URL-safe slug, with batch mode.
• LinkedIn Text Formatter — Add bold, italic, underline and more to LinkedIn posts using Unicode you can paste anywhere.
• AI Text Cleaner — Detect and remove invisible characters and typography artifacts left by AI models and copy-paste.
• Remove Duplicate Lines — Remove duplicate lines from a list, with case, trim, keep-first-or-last and sort options.
• Fake VAT Number Generator — Generate format-valid, check-digit-correct fake VAT numbers for testing invoices and checkout forms.
• Sort Text Lines — Sort lines alphabetically, numerically, by length or randomly, with reverse, case and dedupe options.
• Find and Replace Text — Find and replace text with plain or regex search, case sensitivity, whole-word and global options.
• NATO Phonetic Alphabet — Convert text to the NATO phonetic alphabet (Alfa, Bravo, Charlie) and spell it back.
• Delimiter Converter — Convert a list of lines to a comma, tab or custom delimited list and back, with quoting.
• Fancy Text Generator — Turn plain text into bold, italic, script and other Unicode font styles you can copy.
• Remove Line Breaks — Remove or replace line breaks and join paragraphs, with options to keep blank lines.
• Title Case Converter — Capitalize titles correctly with AP, Chicago, APA and MLA style rules, in your browser.
• Readability Score Checker — Score text with Flesch-Kincaid, Gunning Fog, SMOG and more, with word and syllable stats.
• Number to Words Converter — Convert numbers and currency amounts into written words, with cardinal and ordinal forms.
• AI Text Summarizer — Summarize long text into a short summary — the AI model runs in your browser, nothing is uploaded.
• AI Sentiment Analyzer — Detect the tone of text as positive or negative with a confidence score — runs in your browser.
• AI Entity & PII Extractor — Extract names, organizations, locations, emails, phone numbers and IPs from text — runs in your browser.
• Local AI Chat — Chat with an AI assistant that runs entirely in your browser on your own device. Your conversation is never uploaded.
• Reverse Text — Reverse text by character, word or line, with Unicode-safe grapheme handling.
• Character Frequency Counter — Count how often each character or word appears in text, sorted by frequency.
• Upside Down Text Generator — Flip text upside down using Unicode look-alikes you can paste anywhere.

Frequently asked questions

What can I do with ArrayKit's Text tools?

You can count words, characters, sentences, lines, bytes and approximate tokens live; convert text between camelCase, snake_case, kebab-case and PascalCase; slugify titles into clean URL-safe slugs; generate placeholder lorem ipsum; and build fake JSON test data with names, emails, UUIDs, dates and prices.

Which text tool should I use to count words and characters?

Use the Word & Character Counter. Paste or type your text and it shows live word, character, sentence, line and UTF-8 byte counts plus an approximate token estimate and reading time, with an optional top-words frequency list.

Can these Text tools reformat identifiers and URLs?

Yes. The Case Converter rewrites identifiers between camelCase, snake_case, kebab-case, PascalCase and more, and the Slug Generator turns titles into clean URL slugs with a hyphen or underscore separator, accent stripping and optional stop-word removal, including a batch mode.

Are these Text tools safe to use with sensitive content?

Yes. Every Text tool runs entirely in your browser. Your input is processed locally on your device and nothing is uploaded to a server, so even sensitive drafts, prompts and identifiers never leave your machine.

Do the Text tools work offline?

Once the page has loaded, the tools run on your device in your browser, so word counting, case conversion, slug generation, lorem ipsum and mock-data creation keep working even if your connection drops.

Can I generate placeholder and test data with these tools?

Yes. The Lorem Ipsum Generator produces filler paragraphs, sentences or words for mockups, and the Mock Data Generator creates fake JSON records — names, emails, UUIDs, dates and prices — for seeding databases, populating prototypes and stubbing API responses.