Improving performance by prefetching product pages from Etsy Search

Rarely are there opportunities for big, bold, game-changing improvements in web performance. The Speculation Rules API (SRA) is...

David Weinzimmer

2025/10/29

Adopting Jetpack Compose for Etsy’s Android App

One of our Guiding Principles at Etsy is that we “commit to our craft.” This means that we have a culture of learning, in...

John Kalmi

2025/01/28

Macramé: Untangling the Knot on the Etsy Android Listing Screen

Easily the most important and complex screen in the Buy on Etsy Android app is the listing screen, where all key information about...

John Kalmi

2024/03/18

Improving the iOS Listing Screen with Generics

We launched Etsy’s iOS app way back in 2011, so we have a long and fruitful history in the App Store. The listing screen, where...

Hector García Peña

2022/05/05

One Activity to Rule Them All

Reducing crashes and increasing engagement with Etsy’s Android app through architecture Over the past couple of years, the Etsy...

John Kalmi

2022/04/26

Mutation Testing: A Tale of Two Suites

In January of 2020 Etsy engineering embarked upon a highly anticipated initiative. For years our frontend engineers had been using...

Nathan Thompson

2020/08/17

The journey to fast production asset builds with Webpack

Etsy has switched from using a RequireJS-based JavaScript build system to using Webpack. This has been a crucial cornerstone in...

Jonathan Lai

2020/02/03

An Introduction to Structured Data at Etsy

Etsy has an uncontrolled inventory; unlike many marketplaces, we offer an unlimited array of one-of-a-kind items, rather than...

Yael Kaufman

2019/07/31

boundary-layer : Declarative Airflow Workflows

When Etsy decided last year to migrate our operations to Google Cloud Platform (GCP), one of our primary motivations was to enable...

Kevin McHale

2018/11/14

Sealed classes opened my mind

How we use Kotlin to tame state at Etsy. Listings, tags, attributes, materials, variations, production partners, shipping profiles,...

Patrick Cousins

2018/04/12

Optimizing Meta Descriptions, H1s and Title Tags: Lessons from Multivariate SEO Testing at Etsy

We recently ran a successful split-testing title tag experiment to improve our search engine optimization (SEO), the results and...

Daniel Marks

2017/01/25

Building a Better Mobile Crash Analytics Platform

Crashcan (think trashcan, but for crashes) is Etsy's internal application for mobile crash analytics. We use an external partner...

Russ Taylor

2016/11/04