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
Check if a website is really down or if the problem is on your end. Multi-region testing from different global checkpoints.
ipconfig /flushdns on Windows or sudo dscacheutil -flushcache on Mac), or using a VPN to test.
Enter a URL and get a one‑page report of titles, description, headings, image alts, and broken links. All from browser.
Measure your internet connection speed by downloading and uploading a small test file. Works from your browser.
Enter a URL and see its favicon at all standard sizes. Check if it's properly defined. SEO basic check.
Check if the current page can be loaded offline by examining the service worker cache. Developer tool for PWAs.
Request permission and detect when the user is idle (away from keyboard). See screen lock state. For native‑like apps.
Quickly estimate your internet connection speed by downloading a small test file. See class and recommendations.
Shows a counter of how many seconds you have been idle. Tracks mouse and keyboard activity without recording.
Check if the browser has captured the beforeinstallprompt event. Understand why your PWA is (or isn't) installable.
Analyze text for keyword frequency and density. Highlights over-optimized terms. Perfect for content writers and SEO editors. Entirely browser-based.
Enter a URL and extract the font stacks and web font URLs used on that page. Quick typography research.
Enter a URL and fetch its text/background colors to perform a bulk contrast check. See warnings for WCAG violations.
Detect browser support for font‑tech() and font‑format() values in @font‑face src. Check COLRv1, variable, etc.
Click on leaf symptoms (yellow, brown tips, spots) to diagnose common houseplant issues and solutions.
A beautiful full‑screen binary clock showing hours, minutes, seconds in glowing bits. Dark mode perfect for desks.
Add web content to the device’s content index (like Google Discover). See the indexed items and delete them.
Preview the Gravatar image associated with any email address. Generate the correct Gravatar URL. Handy for avatar debugging.
Log neck, chest, waist, hip, and limb measurements over time. See changes on a chart. All data stored locally.
Paste a Content‑Security‑Policy header and get a human‑readable breakdown. See potential risks and suggestions.
Watch for updates to aria‑live regions and log what a screen reader would announce. Debug live regions.
Estimate hiking time using Naismith's rule (distance + elevation gain). Adjust for terrain and fitness. Plan your outdoor adventure.
Based on desired annual income and billable days, calculate your minimum day rate. Don't undercharge.
Enter hole saw diameter and material to find the recommended RPM and feed pressure. Prevent burning and kickback.
Enter a reference port's high tide and see estimated tides for the next 3 days using rule of twelfths. Educational.
Test how your page loads under slow, 3G, or offline conditions by intercepting fetch and applying delays. No DevTools needed.
Simulates 4d6 drop lowest many times and shows average stat array. Character creation helper.
Calculate the new average cost of a stock after buying more shares at a different price. Invest smarter. All local.
Inject dynamic messages into ARIA live regions and monitor how they trigger screen reader announcements. Debug a11y.
Visual chart and questionnaire to estimate pet obesity risk. Combines weight, breed, and palpation guide.
Record measurements for each window and generate a cutting list for plywood or track inventory of metal shutters. Print and store.
If your device has a barometer, read the pressure and see trend analysis for short-term weather prediction. Fully local sensor access.