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Isaachemistry.org Code Review
Summary Score is a calculated score for isaachemistry.org code structure and quality, including the level of HTML code optimization, CSS and JavaScript compression.
Gzip compression is not enabled
CSS code is minified Consider minifying your HTML code- https://isaacphysics.org/partials/header.html -> 7.4KiB -> 58%
- https://isaacphysics.org/partials/footer.html -> 2KiB -> 24%
- https://isaacphysics.org/chemistry -> 1.9KiB -> 21%
- https://isaacphysics.org/partials/login.html -> 743B -> 25%
- https://isaacphysics.org/partials/states/generic_page.html -> 582B -> 43%
- https://isaacphysics.org/partials/mobile_pre_header.html -> 466B -> 32%
- https://isaacphysics.org/partials/cookie-message.html -> 227B -> 20%
There are files that block page rendering- https://isaacphysics.org/js/lib/katex/katex.min.js
- https://isaacphysics.org/js/lib/nprogress.js
- https://cdn.isaacphysics.org/vendor/mathjax/2.7.4/MathJax.js?delayStartupUntil=configured
- https://isaacphysics.org/isaac.js
- https://fonts.googleapis.com/css?family=Exo:400,300,700
- https://isaacphysics.org/js/lib/katex/katex.min.css
- https://isaacphysics.org/isaac.css
Leverage browser caching for the following URLs:- https://isaacphysics.org/api/v2.7.1/api/pages/chemistry_landing_page -> 60 minutes
- https://www.google-analytics.com/analytics.js -> 2 hours
- https://isaacphysics.org/api/v2.7.1/api/images/content/general_pages/figures/chem_board.PNG -> 24 hours
- https://isaacphysics.org/api/v2.7.1/api/images/content/general_pages/figures/chem_book_img.jpg -> 24 hours
Speed and usability scores by Google PageSpeed Insights.
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• Speed Score
This is a resulting grade of the analyzed isaachemistry.org web page structure. Analysis tries to identify slow elements on the page such as uncompressed images and not minified JavaScript code.
• Usability Score
This number is generated on the basis of isaachemistry.org content analysis. Do all UI elements fit the mobile viewport? Are all links and buttons located not too close to each other? The algorithm tries to answer these questions and give an estimated score.
• For more explanation and detailed report please visit https://developers.google.com/speed/pagespeed/insights/
Gzip is not enabled CSS is minified HTML could be minified- https://isaacphysics.org/partials/header.html -> 7.4KiB -> 58%
- https://isaacphysics.org/partials/footer.html -> 2KiB -> 24%
- https://isaacphysics.org/chemistry -> 1.9KiB -> 21%
- https://isaacphysics.org/partials/login.html -> 743B -> 25%
- https://isaacphysics.org/partials/states/generic_page.html -> 582B -> 43%
- https://isaacphysics.org/partials/mobile_pre_header.html -> 466B -> 32%
- https://isaacphysics.org/partials/cookie-message.html -> 227B -> 20%
Consider compressing these images- https://isaacphysics.org/assets/books/chemistry_16.jpg could be reduced in size by 93KiB (72%)
- https://isaacphysics.org/api/v2.7.1/api/images/content/general_pages/figures/chem_book_img.jpg could be reduced in size by 87.3KiB (72%)
- https://isaacphysics.org/assets/books/physics_skills_14.jpg could be reduced in size by 44.4KiB (43%)
- https://isaacphysics.org/assets/books/pre_uni_maths.jpg could be reduced in size by 37KiB (46%)
- https://isaacphysics.org/api/v2.7.1/api/images/content/general_pages/figures/chem_board.PNG could be reduced in size by 32.1KiB (15%)
- https://isaacphysics.org/assets/books/phys_book_gcse.jpg could be reduced in size by 8.9KiB (22%)
There are files that block page rendering- https://isaacphysics.org/js/lib/katex/katex.min.js
- https://isaacphysics.org/js/lib/nprogress.js
- https://cdn.isaacphysics.org/vendor/mathjax/2.7.4/MathJax.js?delayStartupUntil=configured
- https://isaacphysics.org/isaac.js
- https://fonts.googleapis.com/css?family=Exo:400,300,700
- https://isaacphysics.org/js/lib/katex/katex.min.css
- https://isaacphysics.org/isaac.css
Some elements on the page are too close to each other. This may cause confusion while browsing. The size of all elements on the page fits the mobile viewport.
Isaachemistry.org Main Page Meta
| HTML Tag | Content | Informative? |
|---|---|---|
| Title: | Not set | Empty |
| Description: | Not set | Empty |
| H2: | Isaac Physics | Is it informative enough? |
Do you own isaachemistry.org?
We've noticed that you have issues with some content elements on the main page:
• Title is an important tag of the page. However, its absence may harm CTR of isaachemistry.org in search engines.
• You should add a description to the main page of isaachemistry.org if you want your potential visitors to see it in Google or other search engines.
• Take a look at the headings; there might be too little information. Headings are important for usability and search engine optimization.
We've noticed that you have issues with some content elements on the main page:
• Title is an important tag of the page. However, its absence may harm CTR of isaachemistry.org in search engines.
• You should add a description to the main page of isaachemistry.org if you want your potential visitors to see it in Google or other search engines.
• Take a look at the headings; there might be too little information. Headings are important for usability and search engine optimization.
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Server Connection Speed
Isaachemistry.org main page was reached and loaded in 1.59 seconds. (Timing result excludes loading JavaScript, images and styles).
This is a good result. Try the services listed at the bottom of the page to search for available improvements
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