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|Table of Contents|
|Minor HTML issues found on homepage|
|How can this website be improved?|
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Basic information for dahlemcenter.org
About: The Dahlem Conservancy is a non-profit organization that manages and funds the John and Mary Dahlem Environmental Education Center. We bridge…
Email: contact (at) dahlemcenter (dot) org
Social media profiles:
Using HTTPS: Yes 🙂
HTML errors found on homepage
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CSS: Parse Error.
CSS: “font-weight”: Parse Error.
CSS: “letter-spacing”: Parse Error.
CSS: “font-smoothing”: Property “font-smoothing” doesn’t exist.
CSS: “speak”: “none” is not a “speak” value.
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CSS: “background-color”: “40%” is not a “radial-gradient” value.
CSS: Parse Error.
CSS: “border-radius”: Too many values or values are not recognized.
CSS: “moz-border-radius”: Property “moz-border-radius” doesn’t exist.
OVERALL SITE SPEED: AVERAGE (details below)
CUMULATIVE LAYOUT SHIFT SCORE: AVERAGE. Have you ever been reading an article online when something suddenly changes on the page? Without warning, the text moves, and you’ve lost your place. Or even worse: you’re about to tap a link or a button, but in the instant before your finger lands, BOOM – the link moves, and you end up clicking something else! This is a measure of how often this is happening on your website.
FIRST CONTENTFUL PAINT MS SCORE: AVERAGE. This measures the time taken for the first thing on your website to load when a visitor goes there.
FIRST INPUT DELAY MS SCORE: AVERAGE. How long it takes for your website to react if the user interacts with it in some way, such as clicking a link or button.
LARGEST CONTENTFUL PAINT MS SCORE: AVERAGE. Measures how long the main part of the website takes to load.
Opportunities for improvement
Efficiently encode images: Optimized images load faster and consume less cellular data.
Potential savings of 6 KiB
Defer offscreen images: Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.
Potential savings of 2 KiB
Potential savings of 14 KiB
Eliminate render-blocking resources: Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Potential savings of 200 ms
Avoid multiple page redirects: Redirects introduce additional delays before the page can be loaded.
Potential savings of 230 ms
Serve images in next-gen formats: Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Potential savings of 93 KiB
Potential savings of 692 KiB
Remove unused CSS: Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity.
Potential savings of 228 KiB
Properly size images: Serve images that are appropriately-sized to save cellular data and improve load time.
Potential savings of 95 KiB