Swatch Match Finder - Online Find Images Matching a Palette
Pick a color palette and the tool shows sample images that match it. Great for moodboard and brand inspiration. Static dataset.
UD5 Toolkit
Scan your website or HTML to detect missing & broken images instantly
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<img> tags, srcset attributes, <picture> elements, and lazy-load attributes like data-src). (2) Detect — each image URL is tested by attempting to load it; if the server returns an error or the image fails to render, it's flagged as broken. (3) Report — results are displayed with previews, status codes, and response times. You can export broken URLs for fixing. The tool runs entirely in your browser — no data is uploaded to any server.
data-src, data-lazy-src, data-original, data-srcset, and data-lazy-srcset. These are used by popular lazy-load libraries and frameworks (like LazyLoad.js, WordPress lazy load plugins, and native loading="lazy" with fallback). The "Check lazy-load attrs" option is enabled by default. This ensures you catch broken images even when they use deferred loading techniques — giving you a complete picture of your page's image health.
Referer header matches their domain; our tool's direct requests may be blocked while your browser (sending the correct referer) loads them fine. CORS restrictions — the server may reject cross-origin image checks. CDN geo-restrictions — images may be served only to specific regions. Rate limiting — aggressive scanning may trigger temporary blocks. If this occurs, try reducing concurrency in the advanced options, or verify flagged images manually. For the most accurate check on your own website, use the HTML Paste method after viewing your page source.
srcset + <picture>) with fallback URLs.
Pick a color palette and the tool shows sample images that match it. Great for moodboard and brand inspiration. Static dataset.
Enter a URL and see its favicon at all standard sizes. Check if it's properly defined. SEO basic check.
Load an image and see the exact events fired (load, error, abort). Monitor progress. Dev helper.
See how your browser renders emojis from different Unicode versions. Detect gaps in your system's emoji font support.
Drop files onto a zone and see a preview with name, size, and type. Copy the JavaScript pattern for your site.
Enter an emoji or browse to see which Unicode version introduced it and whether older OS versions might fail.
Paste your email subject and body. The tool highlights common spam trigger words and gives a risk score. Improve inbox placement.
Select a heading font and get recommended body font pairings. Live preview with sample text. Copy the CSS import links.
See how to implement file upload progress using both fetch and XHR. Real‑time bar and code snippets for your project.
Paste HTML code and extract all comments or remove them completely. See a list of comments found. Clean your markup.
Convert between emoji characters and their shortcode representations (e.g., :tada: to 🎉). Supports Slack and GitHub styles.
View every standard emoji in a searchable grid. Hover to see a larger preview. Click to copy. Updated with Unicode 16.
Transform regular text into the mocking SpongeBob‑style alternating case. Copy and paste for hilarious effect.
Paste a list of words or lines and convert all to UPPERCASE or lowercase at once. Also supports title case.
Start a fetch request and cancel it with AbortController. See how to implement request cancellation. Interactive.
Convert running shoe sizes between US (men/women), UK, EU, and centimeters. Also includes brand-specific fit notes (general guide).
Quiz yourself on element symbols, names, and atomic numbers. Multiple modes: element to symbol, symbol to element. Score tracking. Great for chemistry students.
Generate a printable pace band for ultra distances with mile/km splits and cumulative time. Adjust for terrain.
Check if the browser has captured the beforeinstallprompt event. Understand why your PWA is (or isn't) installable.
Enter an API URL and quickly check its HTTP status code and response time. See response headers and body. Browser fetch.
Type any character and see how it renders in different font stacks. Detect missing glyphs and fallback behavior.
Enter a palette of colors and see a grid showing whether each foreground/background pair passes AA or AAA contrast. Must for designers.
Enter a URL and get a one‑page report of titles, description, headings, image alts, and broken links. All from browser.
Look at HTTP headers and JavaScript objects to guess which browser extensions might be installed. For awareness.
Enter a package name and version range to see all satisfying versions from the registry. Understand ^ and ~.
Define minimum length, uppercase, digits, special chars, and check if a password meets your custom policy. Instant feedback.
Check if an IBAN has the correct length and structure for its country. Early validation, no bank connection.
Drop an image that might have wrong extension and see its real format (JPEG, PNG, WebP) based on header bytes.
Tell if your password has appeared in data breaches without sending the full password. Uses hash prefix locally.
Enter any integer and quickly find the next prime number after it. Perfect for hashing and puzzles.