The Latest Trends in Web Development in 2021

Do you want to stay ahead of your competitors in web development?

Do you want to build a modern web app using the latest technologies and trends?

Or maybe you just want to keep abreast of trends on the web?

If any of the above is true, this article will be helpful. We gathered the most significant trends in web development that are in the public eye. To simplify the reading of the article, we divided trends into three categories:

  • Ongoing — these trends you can implement in web development right now. They work and there are high chances that you have already faced them somewhere on the Internet. If you want to stay ahead of your competitors, you shouldn’t ignore these trends.
  • Potential — these trends are about technologies that have been at a development stage in recent years. They have great potential but still are not used worldwide. It’s not a big deal if you can’t follow these trends right now. These trends can be forgotten in the future or give you a competitive advantage in the coming years and become ongoing trends.
  • Future — future trends include technologies that will affect all aspects of people’s lives. It is difficult to guess when exactly they become an integral part of the everyday life of millions of people — the process may take half a year or half a decade to happen. But that will definitely happen and change the web.

A shortlist of all web development trends in 2021:

Ongoing trends:

  1. Mobile-first internet
  2. Progressive web apps
  3. Motion UI — increase user engagement!
  4. JavaScript and React for web development continue their hegemony
  5. Single-page applications and server-side/static rendering
  6. Cloud computing mainstream
  7. Low code and no code technologies — the development become available to everyone


  1. AI chatbots and voice bots will improve customer services and partially replace human services
  2. Voice search and smart speaker devises market volume is increasing
  3. 5g technologies are appearing
  4. Micro Frontend
  5. Automation testing
  6. Cybersecurity continues its growth


  1. Blockchain technologies for ultra-security of data storage and payment processes
  2. Machine learning SaaS and big data artificial intelligence

Ongoing trends:

1. Mobile-first internet

Mobile internet plays a key role nowadays. And that trend is on its rise.

  • There were 5185,5 billion unique mobile subscribers according to GSMA in 2019. It refers to the number of subscriptions to a public mobile service that provides access to the PSTN using cellular technology.
  • Google uses a mobile version of the website for indexing and ranking.
  • 54,8 % of global website traffic was generated by mobile devices at the beginning of 2021. Mobile devices have covered more than 50% mark since 2017.
  • Some emerging digital companies with limited finance pay much more attention to mobile development for smartphones rather than beginning from desktop web development. That was vice versa several years ago.

2. Progressive web apps

A progressive web app (PWA) is a web app that brings a native app-like user experience across all platforms through a web browser. PWA gives a feel and functionality like any actual native app. Most websites can be turned into a progressive web app. PWA stands for an application that you can use on mobile devices without downloading a portable application.

Some examples of PWA:

  • AliExpress increases conversion rate for new users by 104% with new Progressive Web App.
  • BookMyShow increases conversion rate for users by 80% using a Progressive Web App.
  • A list of progressive web apps you can find here.

3. Motion UI — increase user engagement!

Motion UI implies an interactive and responsive interface that reacts to your actions both on desktop and mobile. The main goal of motion UI is to increase visitor engagement, so the session duration will last longer, and you have an opportunity to inform users about your services/product better.

Some facts about user engagement:

  • An average time per page across all industries is 62 seconds according to Digital Experience benchmark 2020 research
  • There is a rule of 15 seconds which says that you have only 15 seconds during a website session to get the user’s attention and drive a central idea of your website.

What motion UI means in detail:

  • Smooth micro-interactions
  • Seamless transitions
  • Nice-looking hovers for every significant interactive element
  • Animated charts
  • Parallax scrolling
  • Animated scrolling
  • Stylish cursor

4. JavaScript and React for web development continue their hegemony

JavaScript and React continue their dominance among all tools for web development.

Some facts about JavaScript and React:

  • JavaScript is the most popular technology among Programming, Scripting, and Markup Languages. It has maintained its stronghold for eight years in a row according to Stack Overflow Survey 2020.

  • React is the most loved web framework after ASP.NET Core with 68.9% of developers who are developing with the language and going to use it in the near future.

There are more than 10 other web frameworks for web development. Among them are Laravel, Angular, Vue, Ruby on Rails.

5. Single page applications and serve-side/static rendering

Single-page apps (SPA) is a JavaScript-based web application or website that dynamically renders the content on a single web page, instead of loading an entirely new page in a web browser. SPA makes the web more dynamic and fastens the transitions between content while users interact with the app. Furthermore, it gives almost instant feedback to users on their actions.

SPAs have one problem — they are not friendly to Search Engine Optimization (SEO) because pages load dynamically via JavaScript while Googlebot indexes pages by rendering HTML/CSS data. The solution is server-side rendering that makes it possible for an application or website to render the webpage on the server instead of rendering it in the browser. Thanks to that, all the page content is available to Googlebot and other search engine crawlers. The most popular framework to give SPA server-side rendering is Next.js. A similar framework that is used for static site generation (there are differences between static and server-side rendering, but the effect for SEO is the same) is Gatsby.

Some facts about SPA:

  • React, the most loved web technology after ASP.NET Core according to Stack Overflow Survey 2020, is mostly used for building Single Page Applications.
  • Examples of SPA: Twitter, Gmail, Google Drive, Google Maps, Airbnb, Netflix, Pinterest.

6. Cloud computing mainstream

The COVID-19 pandemic led to an increase in demand for cloud solutions. Cloud computing is the on-demand availability of computer system resources like servers, storage, databases, networking, etc.

Examples of cloud solutions: Amazon Web Server (AWS), Google Cloud Platform , Microsoft Azure, IBM Cloud .

‍Some facts about Cloud computing mainstream:

  • Cloud computing offers some severe benefits: there is no need to host, maintain, upgrade, or worry about the data security of servers for your software applications. This model is cost-effective and very scalable.

7. Low code and no code technologies — development become available to everyone

Low-code and no-code paradigm means that anyone with minimum to no coding skills can create new software which can help speed up their businesses and overall digital transformation initiatives. That opportunity turned into life thanks to the growth of the number of user-friendly apps that allow building web apps without writing a single line of code.

Some examples:

A few words about the potential and future trends in web development:

Potential trends:

8. AI chatbots and voice bots will improve customer services and partially replace human services

Some facts:

  • Global Chatbot Market Anticipated to Reach $9.4 Billion by 2024 according to market Businessinsider.
  • There are over 300 000 bots on Facebook according to BentureBeat .
  • Over 50% of customers expect a business to be open 24/7 according to oracle research.

9. Voice search and smart speaker devises market volume is increasing

Some facts:

10. 5g technology is appearing

Some facts:

  • 5g technologies promise to deliver that technology can deliver data rates of 10 to 100 times faster than current 4G networks according to CES
  • According to Boston Consulting Group, 5g could contribute $1.4 trillion to $1.7 trillion to U.S. GDP and create 3.8 million to 4.6 million jobs in the next decade

11. Micro Frontend

Some facts:

  • IKEA, DAZN, Upwork, Spotify SoundCloud have used micro frontend for their website development.
  • More info about micrifrontend you can find here

12. Automation testing

Some facts:

  • Only 5% of companies used automation testing by 100% in 2016. 66% used mixed automation and manual testing

13. Cyber security continues its growth

Some facts:

  • 69% of respondents in the 2021 Global DevSecOps Survey noted that developers should be able to write secure code, but 68% believe that fewer than 50% of developers can’t spot vulnerable parts of code that security teams find later on
  • In Q1 2020, there was a whopping 542% increase in DDoS activity compared to Q4 2019
  • The cybersecurity market is likely to generate over $300 billion by 2024 data before the covid pandemic.

Future trends:

14.Blockchain technologies for ultra-security of data storage and payment processes

How that will change the web?

  • Main benefits: ultra-secure data storage and payment processing.

15. Machine learning SaaS and big data artificial intelligence

  • the global artificial intelligence software market is forecast to reach around 126 billion U.S. dollars by 2025

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