All about web and software development

The web developer blog

Francesca, Ricarda, 04/02/2025

Top 10 Mistakes to Avoid When Building a Digital Product

MVP development

UX/UI design

product vision

agile process

user engagement

product development

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Irena, 07/14/2024

Why flatMap() is easier than filter() in TypeScript apps

Typescript 5.5

Array Methods

flatMap

filter

map

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Martin, 09/20/2018

How to avoid unnecessary repaints

Web Development

CSS Animation

Rendering

Browsers

Devtools

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Leonhard, 10/22/2024

Strategies to Quickly Explore a New Codebase

Web App Development

Consulting

Audit

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By Category

Lea, 04/04/2025

A Beginner's Guide to Reusability in Vue

Vue

JavaScript

Reusability

DRY Principle

Components

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Francesca, Ricarda, 04/02/2025

Top 10 Mistakes to Avoid When Building a Digital Product

MVP development

UX/UI design

product vision

agile process

user engagement

product development

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Judith, 03/31/2025

Turning Assumptions into Learnings: The Right Way to Use MVPs

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Three pupas, a new green chrysalis coloration, one that’s about ready to emerge, and a butterfly that’s already come out

Antony, 01/30/2025

The Evolution of Data Mutations Using Forms in React

Forms

React

Mutations

Web App Development

Remix

Actions

Optimistic UI

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Benedikt, 01/13/2025

Resisting the Urge to Refactor Legacy Code

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Dark, moody background of blueberry muffins on a cooling rack with a tablet displaying the Konsens app design layered over the image.

Klara, 12/05/2024

Accessibility – An Essential Ingredient in the Batter or the "Icing" on the Cake?

Web Accessibility

Post Mortem

Konsens

Digital Inclusion

Web Development

Digitale Barrierefreiheit

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Leonhard, 10/22/2024

Strategies to Quickly Explore a New Codebase

Web App Development

Consulting

Audit

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A castle-like building behind a half-open gate

Leonhard, 07/15/2024

User Input Considered Harmful

TypeScript

Web App Development

Best Practices

Full-Stack

Validation

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Irena, 07/14/2024

Why flatMap() is easier than filter() in TypeScript apps

Typescript 5.5

Array Methods

flatMap

filter

map

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Moritz, 01/29/2024

Heading for Greatness — A React Developer's Guide to HTML Headings

HTML Headings

Best Practices

Uberschrift

Accessibility

SEO

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illustration showing a hand that gives money to different projects like education, computer science and sustainability

Stephan, 12/18/2023

A small contribution towards a better world

Company Culture

Donations

Charity

Corporate Culture

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The word "disability" distributed over tiles and visualised by hand signs and illustrations surrounding the letters.

Klara, 11/22/2023

Peerigon goes purple

#PurpleLightUp

#InclusionMatters

company culture

diversity

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hallway of wood in rainbow colors with sunlight shining in between the planks

Irena, 05/23/2023

Supporting the queer Community in Augsburg: Diversity Day 2023

Donations

Diversity

CSD Augsburg

Queer Community

Company Culture

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View on a desk from above: two women sit on a desk next to each other with their phones and coffee cups besides their laptops. The scene prominently shows a journal with the text "Empowered (wo)men empower women." A sticker on one laptop says "Still loving Feminism".

Klara, 03/08/2023

International Women's Day – Embrace Equity

Diversity

Women in Tech

Inclusion

Company Culture

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Moritz, 03/03/2023

Unit Testing Licenses: Monitoring the legality of your node_modules with Jest

open source licenses

unit testing

node_modules

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Judith, 01/02/2023

Costs to develop an app – part 2: Cost factors that matter

App Development Costs

Influence Factors

Hourly Rate

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A manager for education in the care sector is looking at a spreadsheet

Celestine, 11/10/2022

Success story: Quesap PraxisApp

Case Studies

UX/UI

Care Management

Planning App

Vue

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illustration of expensive pitfalls in app development

Moritz, Judith, 08/16/2022

Costs to develop an app – part 3: Five pitfalls to avoid

App Development Costs

Pitfalls

Saving Costs

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Judith, 07/25/2022

Costs to develop an app – part 1: Project cost examples

App Development Costs

Inside Story

Cost Examples

Case Studies

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A collection of logos from Smashing Magazine, OnePageLove, Syntax.FM, Bytes, and Josh Comeau

Tanner, 04/29/2022

Our 20 favorite web development resources to follow

webdev

newsletters

blogs

resources

learning

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illustration of Peerigon annual donation initiative

Yvonne, 01/13/2022

Giving back – our annual donation initiative

Company Culture

Donations

Corporate Culture

Charity

CSR

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Irena, Celestine, Leonhard, 05/18/2021

Towards fairness: calculating the Peerigon Gender Pay Gap

Diversity

Salary

Company Culture

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A child and their mom voting in the French presidential election. Photo by Arnaud Jaegers.

Tanner, 04/20/2021

Exploring various voting systems with Konsens

voting systems

ranked choice

positional vote

simple plurality

konsens

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Moritz, 02/12/2021

A guide to CSS units — pt. 4: angles, time, dpi and values without units

CSS units

CSS angles

CSS time

unitless

dpi

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Moritz, 02/05/2021

A guide to CSS units — pt. 3: percents, viewports, magic and best practices

CSS units

viewport units

percent

magic numbers

best practices

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Moritz, 01/29/2021

A guide to CSS units — pt. 2: font relative units

CSS units

relative units

font realtive

rem

web typography

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a carrot with a measuring tape wrapped around

Moritz, 01/21/2021

A guide to CSS units — pt. 1: look at these absolute units!

CSS units

pixels

metric system

ppi

dpi

absolute units

relative units

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Jannik, 12/01/2020

Using Framework Agnostic Web Components in your React Application

web components

custom elements

shadow dom

micro frontends

react

vue

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Judith, 09/28/2020

How a battle over a trip to Europapark forced us to build a voting app

Voting App

Instant Runoff Voting

Group Decision Making

Vue.js

MongoDB

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Lisa, 04/22/2020

Lessons learnt about working from home before it was mandatory

Remote Working

Home Office

Work From Home

Company Culture

Teamwork

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piece of paper with two pencils and some handwritten lines of code

Moritz, 03/04/2020

Scripts need love too!

npm scripts

Tooling

Linting

Code Quality Tools

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drawing of a human head from behind with scribbled text above, saying raytracing, rust, automata interpreter and compile

Jannik, 02/14/2020

Learning Rust by learning something new

Coding

Rust

Programming

Rustlang

Learning

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retro computer animation of two people in front of browser windows

Moritz, 11/12/2019

It started with a button (now we’re here)

Web Accessibilty A11y

Web Development

UI Design

History of Technology

Usability

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illustration of a rocket starting into space

Leonhard, Irena, 05/28/2019

Peerigon is about the people

Diversity

Manifesto

Corporate Culture

Team Spirit

Inclusion

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two people riding a bike, holding hands making promises

Jessica, 04/09/2019

Async adventures or: How I learned to stop worrying and love promises

Async/Await

JavaScript

Promises

Callbacks

Call Stack

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screen showing javascript code with function scope and context

Jessica, 04/08/2019

The difference between function scope and context in JavaScript

JavaScript

Basics

Apprenticeship

Web Development

Tutorial

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two books about css modules and a smartphone on top

Jessica, 03/01/2019

A short story about CSS modules

CSS Modules

Basics

Apprenticeship

JavaScript

Tutorial

Web Development

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Cartoon of a girl having too many asynchronous tasks on her mind

Judith, 02/09/2019

Ten minutes on asynchronous callbacks in JavaScript

JavaScript

Asynchronous

Callbacks

Call Stack

Tutorial

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Simon, 02/01/2019

How to debug a Node.js server written in TypeScript running in Docker

JavaScript

TypeScript

Docker

Nodejs

Debugging

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picture of a laptop screen where you can see an app preview and code

Leonhard, 12/18/2018

Mobility app: Why and how we built jetztein.de in 24 hours

Mobility

Hackathon

Augsburg

Prototyping

City Planning

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Cartoon of a JavaScript mascot with a hat showing the keyword this and five different use cases

Judith, 11/23/2018

JavaScript’s this keyword explained

JavaScript

This

Tutorial

Apprenticeship

Cartoon

Learning to code

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JavaScript cartoon: saying hello to JavaScript

Judith, 11/09/2018

My first lesson: The joy of JavaScript

Women in Tech

Learning to code

Cartoon

JavaScript

Apprenticeship

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Martin, 09/20/2018

How to avoid unnecessary repaints

Web Development

CSS Animation

Rendering

Browsers

Devtools

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sheets of paper on a wooden surface showing images of unit tests and integration tests

Tanner, 08/30/2018

Unit Tests or Integration Tests? The Answer May Lie in the Middle

JavaScript

Tutorial

API

Nock

Tdd

Jest

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