Paweł Kowalski

Performance, JavaScript, Serverless, and Testing enthusiast.

Earth, Milky Way Joined on Dec 25, 2017 https://pavelloz.com

Work

Senior Performance Engineer at platformOS

platformOS

Performance optimization, JavaScript

E2E Testing, Serverless, JAMStack

Web performance consulting, AWS Bill reduction

33 posts published

581 comments written

16 tags followed

Pinned

Paweł Kowalski for platformOS

Jun 9 '20

Speeding Up Tesla.com - Part 2: Main CSS Splitting

#webperf #css #javascript #webpack

6 min read

Paweł Kowalski for platformOS

Oct 14 '21

Background images in TailwindCSS - the clean and easy way

#tailwindcss #css #beginners

1 min read

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Paweł Kowalski for platformOS

Sep 28 '21

We Are Switching From TestCafe to CodeceptJS – Here’s Why

#javascript #testing

2 min read

Paweł Kowalski for platformOS

Apr 7 '21

How We sped Up Our Webpack (TailwindCSS) 7 times!

#performance #webpack #javascript

2 min read

Paweł Kowalski for platformOS

Mar 22 '21

How We Sped Up Our Webpack (TailwindCSS) Build By 74%

#performance #webpack #tailwindcss

3 min read

Paweł Kowalski for platformOS

Dec 29 '20

How to catch Front-end performance regressions?

#webperf #beginners

2 min read

Paweł Kowalski for platformOS

Dec 20 '20

How platformOS uses mixpanel while keeping users privacy?

#beginners #analytics #privacy #performance

5 min read

Paweł Kowalski for platformOS

Dec 4 '20

platformOS Documentation Site Webpack Setup

#webperf #webpack #platformos

6 min read

Paweł Kowalski for platformOS

Nov 26 '20

How to Test Slack Notifications

#testing

4 min read

Paweł Kowalski for platformOS

Nov 17 '20

Using WebP in Your Existing Webpage

#webperf #design

4 min read

Paweł Kowalski for platformOS

Nov 12 '20

Should You Always Care about Your Website Size?

#webperf #webdev #beginners

4 min read

Paweł Kowalski for platformOS

Nov 11 '20

Image Maps with SVG — Back to the Future

#html #css

2 min read

Paweł Kowalski for platformOS

Oct 15 '20

Our documentation site is using Webpack 5 already

#webpack #javascript

2 min read

Paweł Kowalski for platformOS

Aug 3 '20

Scrolling to the Top in CSS

#css #webdev

2 min read

Paweł Kowalski for platformOS

Jul 16 '20

We Couldn't Go Faster Using Quicklinks (or instant.page)

#webdev #webperf #javascript

5 min read

Paweł Kowalski for platformOS

Jul 3 '20

2 Console Commands You Might Forget About

#javascript #beginners

2 min read

Paweł Kowalski for platformOS

Jun 29 '20

3 Performance Tips for Your Next Project

#webperf #javascript #css

4 min read

Paweł Kowalski for platformOS

Jun 25 '20

Hide webpage elements, natively

#css #a11y

2 min read

Paweł Kowalski for platformOS

Jun 24 '20

3 Tips on Preserving Website Speed

#webperf #webpack #javascript #css

6 min read

Paweł Kowalski

Jun 23 '20

How to get rid off hero banners on DEV.to

#meta #privacy

3 min read

Paweł Kowalski for platformOS

Jun 22 '20

The Ten Commandments of Web Performance

#webperf #javascript #css #webpack

1 min read

Paweł Kowalski for platformOS

Jun 15 '20

Developing GraphQL Queries Using GraphiQL

#graphql #platformos #graphiql #beginners

5 min read

Paweł Kowalski for platformOS

Jun 1 '20

Speeding Up Tesla.com - Part 1: Images and JS Minification

#webperf #javascript #css

5 min read

Paweł Kowalski for platformOS

Apr 25 '20

Monitoring Website Performance Using Lighthouse-CI

#webperf #docker #javascript

3 min read

Paweł Kowalski for platformOS

Apr 24 '20

Optimizing Images For The Web

#beginners #node

8 min read

Paweł Kowalski for platformOS

Apr 23 '20

Implementing Social Media Cards for Your Website

#html #beginners #seo

4 min read

Paweł Kowalski for platformOS

Apr 22 '20

Simple node debug logging

#node #beginners #javascript

2 min read

Paweł Kowalski for platformOS

Mar 30 '20

Embedding Youtube Videos in a Performant Way

#beginners #webperf #javascript

2 min read

Paweł Kowalski for platformOS

Mar 27 '20

Recording Your Terminal to SVG

#beginners #shell #opensource

4 min read

Paweł Kowalski for platformOS

Mar 26 '20

Optimizing SVG Exported from Figma

#figma #webperf #webdev #beginners

8 min read

Paweł Kowalski for platformOS

Mar 25 '20

Optimizing Font Files for the Modern Web

#beginners #webperf

5 min read

Paweł Kowalski

Dec 22 '19

Filtering collection properties the easy way

#javascript #beginners

1 min read

Paweł Kowalski

Dec 1 '19

Refactor a function to be more functional

#javascript #functional #beginners

3 min read

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