AWS alternatives

https://vercel.com/ - cloud platform and AWS alternative planetscale.com - serverless platform and AWS alternative. Has free tier. clerk.com - authentication service and Auth0 alternative. Has free tier. axiom.ai - browser automation

Email regex

^ : Start of the string. [a-zA-Z0-9._%+-]+ : Match one or more alphanumeric characters, dots, underscores, percent signs, plus signs, or hyphens. @ : Match the at symbol (@). [a-zA-Z0-9.-]+ : Match one or more alphanumeric characters, dots, or hyphens. \. : Match a dot. [a-zA-Z]{2,} : Match two or more alphabetical characters. $ : ... Read more

Website Speed Test (Loading Performance)

PageSpeed Insights by Google Mobile-Friendly test by Google Website Performance test by Sucuri.net Website speed test by Pingdom Website speed test by GTmetrix Website speed test by Webpagetest.org HTML validator - no need to fix all errors, but this service can help to find and fix possible issues

Fitts's law

Fitts’ Law can be described as “The time required to move to a target is a function of the target size and distance to the target.” We can apply this to web design by looking at the hit area of our objects. Meaning the larger we can make the clickable area of key links and ... Read more

Free images

pixabay.com - free images; License: public domain. pexels.com - free images; License: Creative Commons Zero. stocksnap.io - free images; License: Creative Commons Zero. negativespace.co - free images; License: Creative Commons Zero. lifeofpix.com - free images; License: No Restrictions. unsplash.com - free images; License: No Restrictions. foodiesfeed.com - free food images; License: No Restrictions. cupcake.nilssonlee.se - ... Read more

Do not add social widgets to your website

Social widgets create visual noise and distract user's attention from content Social widgets slow down the page load and consumes some user’s internet bandwidth Social widgets is used by small amount of users and there is no need to show them for everyone; Users can share the page on social network by copying url-address and ... Read more

Introductory programming language

The best introductory programming language is Python. Python is easy to start, readable and extremely powerful language. It is widely used in web, data analysis and science. Stack Overflow Trends on programming languages Visualize Python code execution with PythonTutor

Difference between Promises vs Observables

Observable can provide a stream of data, also can filter the results and you can unsubscribe. It is not possible to do with Promises. Observable can return a value synchronously or asynchronously. Promise is always asynchronous Difference between Promises vs Observables