Visualgo.net Site Title
visualising data structures and algorithms through animation - VisuAlgo
Visualgo.net Meta Description
VisuAlgo was conceptualised in 2011 by Dr Steven Halim as a tool to help his students better understand data structures and algorithms, by allowing them to learn the basics on their own and at their own pace. Together with his students from the National University of Singapore, a series of visualizations were developed and consolidated, from simple sorting algorithms to complex graph data structures. Though specifically designed for the use of NUS students taking various data structure and algorithm classes (CS1010/equivalent, CS2040/equivalent, CS3230, CS3233, and CS4234), as advocators of online learning, we hope that curious minds around the world will find these visualizations useful as well.
Visualgo.net Test Results
visualgo.net Mobile Usability: 62/100
Quick overview:
Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
7
renders only 5 pixels tall (13 CSS pixels) .
...
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Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="http://www.com…u.sg/~stevenha">7</a>
is close to 1 other tap targets .
...
Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
Configure a viewport for this page.
visualgo.net Mobile Speed: 57/100
Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Optimize CSS Delivery of the following:
https://visualgo.net/fonts/silkscreen/stylesheet.css
...
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Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://www.google-analytics.com/analytics.js (2 hours)
...
Reduce server response time
In our test, your server responded in 0.93 seconds.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
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Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://visualgo.net/
...
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Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 30.5KiB (38% reduction).
Compressing https://visualgo.net/img/png/mvc.png could save 10.1KiB (36% reduction).
...
Minify HTML
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Minify HTML for the following resources to reduce their size by 1.6KiB (11% reduction).
Minifying https://visualgo.net/en could save 1.6KiB (11% reduction) after compression.
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