Live Website Audit Checker - Online Quick SEO & Performance
Enter a URL and get a one‑page report of titles, description, headings, image alts, and broken links. All from browser.
UD5 Toolkit
Test your newsletter content against 50+ spam triggers. Get an instant spam score and practical fix suggestions before you hit send.
Enter your email content and run the check to see a detailed spam report.
Enter a URL and get a one‑page report of titles, description, headings, image alts, and broken links. All from browser.
Write in Markdown and get clean, inline‑styled HTML suitable for emails. Pre‑designed templates included. Local conversion.
Analyze text for keyword frequency and density. Highlights over-optimized terms. Perfect for content writers and SEO editors. Entirely browser-based.
Compute multiple readability scores (Flesch Reading Ease, Grade Level, ARI, SMOG). Paste any English text and see which grade level it's suitable for. Local.
Paste text to compute reading ease and grade level using Flesch-Kincaid, SMOG, and ARI. Improve your writing clarity. All in browser.
Preview the Gravatar image associated with any email address. Generate the correct Gravatar URL. Handy for avatar debugging.
Generate a random, generic positive testimonial for product mockups. 'Great product! Changed my life.' Realistic filler.
Create a DMARC policy record with percentage, reporting addresses, and alignment mode. Validate and copy the final DNS TXT.
Paste a list of numbers to visually check uniformity, mean, and simple pattern analysis. Educational tool for statistics and RNG.
Analyze text for subjective and emotionally charged words. Helps identify potential bias in writing. Purely heuristic, local operation.
Simulate a PWA receiving shared text, links, and images. Test the Web Share Target API without a server.
Enter a URL and fetch its text/background colors to perform a bulk contrast check. See warnings for WCAG violations.
Paste any article and get a list of the most relevant keywords using a simple TF‑IDF‑like model. Skip stop words. All local.
Paste HTML or Markdown to count total words, unique words, heading distribution, and reading time. Content audit helper.
Drop a PDF and count the total words, characters, and pages. Text extraction is done locally. Privacy‑friendly.
Paste text to accurately count sentences, average sentence length, and longest sentence. For editors and writers.
Test the Web Share API by sharing text, links, and files directly from the browser. Check compatibility and see example code.
Create a random, aspirational quarterly objective with unrealistic key results. For meeting icebreakers.
Detect browser support for font‑tech() and font‑format() values in @font‑face src. Check COLRv1, variable, etc.
Find out if a word is an isogram (no repeating letters). Different types: first-order, second-order. Word nerd fun.
Enter a URL and fetch its Twitter card meta tags. See a live preview of how the tweet will appear. Debug social sharing.
Paste a Content‑Security‑Policy header and get a human‑readable breakdown. See potential risks and suggestions.
Inject dynamic messages into ARIA live regions and monitor how they trigger screen reader announcements. Debug a11y.
Simulates 4d6 drop lowest many times and shows average stat array. Character creation helper.
Turn your text into a random mix of upper and lower case letters. Great for pranks or silly posts. All local.
Compute the selling price from cost and desired markup percentage, or find the markup from cost and price.
Can’t decide? Use a coin flip, yes/no randomizer, or a customizable wheel. Multiple fun methods to break analysis paralysis. Pure browser fun.
Based on desired annual income and billable days, calculate your minimum day rate. Don't undercharge.
Enter a URL and see a simulated preview of how the link will appear on major social platforms. Check tags.
Enter a recipe and scale the ingredient quantities up or down by servings. Supports fractions and mixed units. Cooking helper.