sfaa-astronomy.org – Full Analysis

Joma

San Francisco Amateur Astronomers – Home

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Table of Contents
Basic information
Minor HTML issues found on homepage
Popular words
Pagespeed analysis
How can this website be improved?
Internal pages
Websites linked to

Basic information for sfaa-astronomy.org

Email: store (at) sfaa-astronomy (dot) org

Social media profiles:

    Using HTTPS: Yes 🙂

    HTML errors found on homepage

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    Bad value “” for attribute “id” on element “script”: An ID must not be the empty string.


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    Duplicate ID “”.


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    The “center” element is obsolete. Use CSS instead.


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    The “center” element is obsolete. Use CSS instead.


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    The “center” element is obsolete. Use CSS instead.


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    The “center” element is obsolete. Use CSS instead.


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    The “font” element is obsolete. Use CSS instead.


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    Stray start tag “script”.


    Popular words

    Word Frequency
    sfaa 18
    lectures 16
    events 9
    star 8
    join 7
    parties 6
    monthly 6
    lecture 5
    pm 5
    membership 4
    mount 4
    tam 4
    contact 4
    scott 4
    miller 4
    astronomy 4
    home 3
    donate 3
    benefits 3
    get 3

    Pagespeed analysis

    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

    Minify JavaScript: Minifying JavaScript files can reduce payload sizes and script parse time.
    Potential savings of 2 KiB

    Properly size images: Serve images that are appropriately-sized to save cellular data and improve load time.
    Potential savings of 388 KiB

    Reduce unused CSS: Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
    Potential savings of 287 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 1,990 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 414 KiB

    Minify CSS: Minifying CSS files can reduce network payload sizes.
    Potential savings of 3 KiB

    Enable text compression: Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.
    Potential savings of 85 KiB

    Reduce unused JavaScript: Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
    Potential savings of 592 KiB

    Avoid serving legacy JavaScript to modern browsers: Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren’t necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers. [Learn More](https://philipwalton.com/articles/deploying-es2015-code-in-production-today/)
    Potential savings of 0 KiB

    Internal pages [TOP 20]

    Website Page
    https://sfaa-astronomy.org/sfaa-bylaws
    https://sfaa-astronomy.org/calendar
    https://sfaa-astronomy.org/Blog/10577474
    https://sfaa-astronomy.org
    https://sfaa-astronomy.org/Sys/Login
    https://sfaa-astronomy.org/index.html
    https://sfaa-astronomy.org/star_parties/city
    https://sfaa-astronomy.org/Sys/ResetPasswordRequest
    https://sfaa-astronomy.org/live-streamed-lectures
    https://sfaa-astronomy.org/monthly-lectures
    https://sfaa-astronomy.org/lectures-mt-tam
    https://sfaa-astronomy.org/benefits-of-membership
    https://sfaa-astronomy.org/event-776860
    https://sfaa-astronomy.org/sfaa-star-parties
    https://sfaa-astronomy.org/star_parties
    https://sfaa-astronomy.org/participate-in-sfaa-activities
    https://sfaa-astronomy.org/for-schools
    https://sfaa-astronomy.org/join
    https://sfaa-astronomy.org/lectures-randall
    https://sfaa-astronomy.org/volunteer

    External homepage links [TOP 20]

    Website Page
    http://hubblesite.org/
    https://www.youtube.com/watch?v=0FXJUP6_O1w
    https://ase.tufts.edu/cosmos/index.asp
    https://spotthestation.nasa.gov/
    http://www.calacademy.org/events/benjamin-dean-astronomy-lectures
    http://wordpress.org
    http://www.joeswebtools.com/wordpress-plugins/moon-phases/
    http://www.chabotspace.org/observatories.htm
    https://skyandtelescope.org/observing/best-meteor-showers-in-2021/
    http://www.zazzle.com/sfaa_astronomy
    http://www.nasa.gov/
    https://darksky.org/
    https://www.youtube.com/channel/UChuBJGp_iJYZ11q_ayA-q3A/videos/