Web Share API Tester - Online Demo & Code
Test the Web Share API by sharing text, links, and files directly from the browser. Check compatibility and see example code.
UD5 Toolkit
Test the Web Share API by sharing text, links, and files directly from the browser. Check compatibility and see example code.
Test the Content Indexing API to add a page to the device's content feed. See how your PWA integrates with the OS.
Add web content to the device’s content index (like Google Discover). See the indexed items and delete them.
Check if the browser has captured the beforeinstallprompt event. Understand why your PWA is (or isn't) installable.
Test the Fullscreen API: request fullscreen on a colored div, detect changes, and copy the JavaScript boilerplate.
Inject dynamic messages into ARIA live regions and monitor how they trigger screen reader announcements. Debug a11y.
Measure your internet connection speed by downloading and uploading a small test file. Works from your browser.
Quickly estimate your internet connection speed by downloading a small test file. See class and recommendations.
Enter a URL and see a simulated preview of how the link will appear on major social platforms. Check tags.
Create a QR code that lets people connect to your Wi‑Fi without typing a password. Just scan and join. Secure local.
Record a short audio or video snippet and get a shareable link (stored locally in browser, no server). For quick feedback.
Test how your page loads under slow, 3G, or offline conditions by intercepting fetch and applying delays. No DevTools needed.
Paste your email body and subject, and get a spam score based on common trigger words and patterns. Improve your cold outreach.
Paste multiple HTML snippets (header, footer) and a main content, then combine them into a single preview. Static site helper.
Paste a Content‑Security‑Policy header and get a human‑readable breakdown. See potential risks and suggestions.
Enter a URL and see its favicon at all standard sizes. Check if it's properly defined. SEO basic check.
Paste a list of numbers to visually check uniformity, mean, and simple pattern analysis. Educational tool for statistics and RNG.
Compare font‑display values (block, swap, fallback, optional) on the fly. See how text renders during web font load. Choose the right strategy.
Paste or write a CSS gradient value and instantly see the rendered output. Debug and iterate on gradients quickly. Local preview.
Assign each receipt item to specific people, then split tax and tip proportionally. Fair group dining payments. All local.
Check current screen orientation and test the lock API. Useful for mobile web apps. Demo with code.
Extract plain text from a PDF file entirely in the browser using PDF.js. No file upload to server. Supports multi-page extraction and search.
Click moving targets as fast as possible. Score time and accuracy. Fun benchmark.
Enter a URL and fetch its Twitter card meta tags. See a live preview of how the tweet will appear. Debug social sharing.
Extract selectable text from a PDF using the browser's built‑in PDF rendering. Copy or download as TXT. No upload, fully private.
Watch for updates to aria‑live regions and log what a screen reader would announce. Debug live regions.
Generate a random, generic positive testimonial for product mockups. 'Great product! Changed my life.' Realistic filler.
Paste two texts, compute the diff, and render the result as a highlighted image. Easier to share changes visually.
Drop a PDF and extract the full text content. Processed locally using PDF.js. No upload. Fast and private.
Compare text‑rendering: auto, optimizeSpeed, optimizeLegibility, geometricPrecision. See kerning and ligature changes live.