Developer tools
Small, focused utilities for things you do constantly — decode a token, format some JSON, test a pattern. Client-side tools run entirely in your browser; nothing you paste in is sent anywhere unless a tool explicitly says otherwise.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE all at once.
CSS & JS Minifier / Beautifier
Minify CSS and JavaScript to shrink file size, or beautify minified code back into readable, indented form — processed entirely in your browser.
Image Compressor & Resizer
Shrink an image's file size and dimensions right in your browser — choose JPEG, WebP, or PNG output and a quality level, with no upload to any server.
Lorem Ipsum Generator
Generate placeholder text by paragraphs, sentences, or words — the classic Lorem Ipsum passage, assembled to the length you need.
QR Code Generator
Turn any text or URL into a scannable QR code instantly, with adjustable size and error-correction level. Generated entirely in your browser.
Date Difference Calculator
Find the exact time between two dates — in years, months, and days, plus total days and weeks — with one-click 'today' shortcuts for either field.
Markdown Previewer
Write Markdown on one side and see the rendered HTML update live on the other — no account, no file upload, rendered entirely in your browser.
Text Diff Checker
Compare two blocks of text line by line and see exactly what was added, removed, or left unchanged — computed entirely in your browser.
Word & Character Counter
Count words, characters, sentences, and paragraphs in real time, with reading and speaking time estimates. Nothing you type leaves your browser.
Content Readability Analyzer
Check Flesch Reading Ease and Flesch-Kincaid Grade Level for any text, along with word count, sentence count, and average sentence length.
Content Sentiment & Entity Analyzer
Check the overall sentiment of a piece of text and see which named entities — people, organizations, places, products — it actually talks about, powered by Google Cloud's Natural Language API.
Hreflang Tag Generator
Build a correct, complete set of hreflang <link> tags for a page's language and region variants, including the reciprocal x-default entry.
Meta Robots Tag Generator
Build a correct <meta name="robots"> tag — noindex, nofollow, noarchive, nosnippet, and the rest — without hand-writing directive syntax from memory.
Robots.txt Generator & Tester
Build a robots.txt file with per-crawler rules, or paste an existing one and test whether a specific user-agent is allowed to fetch a specific path.
Schema Markup (JSON-LD) Generator & Validator
Build valid JSON-LD structured data for Article, FAQPage, HowTo, Product, and BreadcrumbList schema, or paste existing markup and check it against each type's required fields.
SERP Snippet Preview
See exactly how a page's title and meta description will render in Google search results, with real pixel-width truncation instead of a rough character count.
AI Crawler Access Checker
Check whether a domain's robots.txt allows or blocks the major named AI crawlers — GPTBot, ClaudeBot, Google-Extended, PerplexityBot, and more.
AI-Overview Readiness Checker
Scan a page for the structural signals commonly associated with AI answer-engine citation — heading structure, structured data, direct-answer content — as an informational checklist, not a prediction or a score.
llms.txt Generator & Validator
Build a spec-compliant llms.txt file — the emerging convention for telling AI systems what's on a site — or validate an existing one's structure.
OG / Meta Tag Preview Tool
See how a page will look when shared on social media — fetches its Open Graph and Twitter Card tags and renders a live preview.