UD5 Toolkit
Coleman-Liau Index Calculator – Readability Grade Level
Analyze your text using the Coleman-Liau Index to determine the U.S. school grade level needed to understand it. Paste or type text for instant readability feedback.
Writing & Editing Tools
20+ toolsAutomated Readability Index (ARI) – Online Readability Check
Compute the Automated Readability Index to gauge the difficulty of your text. Outputs a grade level required to understand the content. Great for educators and writers.
Speaking Time Estimator – Words to Minutes Converter
Convert your word count into an estimated speaking time based on average words per minute. Adjust the pace for slow, normal, or fast speakers to plan presentations perfectly.
Online Text Diff Checker – Compare Two Versions Side by Side
Paste two text blocks to see a line‑by‑line diff with added lines in green and removed lines in red. Ideal for code reviews and editing.
Random NPC Personality Emulator – Voice, Quirk & Motivation
Instantly flesh out any NPC with a name, voice, mannerism, and secret motivation. Keep your tabletop roleplaying game characters memorable.
Choose‑Your‑Own‑Adventure Tree Builder – Visual Story Map
Draw a branching story tree by adding nodes and connecting them. Export as a JSON or play through the interactive narrative.
Character Name Meaning & Etymology Lookup
Type a potential character name and discover its linguistic origin, historical meaning, and common associations. Add depth to your fictional cast.
Verb Tense Consistency Highlighter – Past vs Present
Paste a paragraph and the tool highlights verbs in past, present, and future tense. Quickly spot accidental shifts that confuse readers.
Haiku Syllable Counter & Drafting Board
Type a haiku line by line and let the tool count syllables per line. Alerts you if a line doesn’t fit the 5‑7‑5 structure, helping you craft perfect haikus.
Active ↔ Passive Voice Converter – Rewrite Sentences
Convert a sentence from active voice to passive voice and vice versa. Helps you understand and practice the grammatical structure for clearer writing.
Fantasy Town Name Generator – For Novels & RPGs
Create evocative fantasy town and village names. Choose a style (medieval, elvish, dwarven, or nomad) to fit your world‑building needs for stories or games.
Email Subject Line Tester – Preview & Length Check
Type your email subject line and see how it will appear on mobile and desktop inboxes. Checks character limits and flags spammy words for better open rates.
Contextual Spell Checker – Commonly Confused Words
Paste your text to highlight commonly confused words (their/there, affect/effect) with usage explanations. A second set of eyes for editing important emails.
Lyric Rhyme Assistant – Find Near & Perfect Rhymes for Songwriters
Type a word and see its perfect, near, and slant rhymes with syllable counts. Also highlights the stressed vowel to help match vocal melody.
Superpower Randomizer – Unique Abilities & Limitations
Generate a completely random superpower with a creative description and a built‑in limitation or weakness. A spark for comic book writers and game character creation.
Constructed Language Word Generator – Make Alien Words
Generate random, pronounceable words based on custom phoneme rules. Perfect for creating a lexicon for your fictional constructed language or alien race.
Markdown to Plain Text Converter – Strip Formatting
Paste Markdown and receive clean, readable plain text with formatting removed. Useful for repurposing blog content for email or plain‑text editors.
URL Slug Generator – Clean & SEO‑Friendly Permalinks
Convert any title or sentence into a clean URL slug. Lowercases, replaces spaces with hyphens, and strips unsafe characters for use in web addresses.
Sentence Stretcher – Online Add Details for Length
Type a simple sentence and get guided prompts to add who, what, where, when, why. Build richer sentences.
Random Technical Title - Online Dev.to Style Headline
Generate a plausible technical blog post title. Useful for practice writing or placeholder content. All local.