Puppeteer vs Selenium vs Playwright, a speed comparison
Which one executes faster? Puppeteer, Playwright, WebDriverIO or Selenium? We ran our own benchmark to find out.…
How we improved the Lighthouse score of our landing page to 96.
We recently optimized the hell out of our Lighthouse score, and one of our landing pages went from a low 70s score to a cool 96 and above score.…
Scaling Puppeteer & Playwright on Checkly with Terraform
Managing large numbers of checks by hand quickly becomes cumbersome. Luckily, Checkly's REST API allows us to automate most of the repetitive steps. Building on that API, the Checkly Terraform Provider takes automation one step further, enabling users to specify their active monitoring setup as code. In this article, we…
Heads up: we are making a change to assertions for API checks
Update: this has been released as per 13:00 CET on 11 November. We delayed it a week due to some rescheduling of other items on our roadmap. This post is to give you a heads up of a change we will release on Tuesday November 3rd that could impact…
We now support 🎭 Playwright!
We are really excited to announce that you can now use Playwright in your browser checks. If you didn't know yet, Playwright is Microsoft's headless browser library. It's very similar to Puppeteer. In fact, it was built by the original creators of Puppeteer and has mostly the same features and…
Writing theheadless.dev
After weeks of writing, researching and hopefully enough proofreading, we just launched a living collection of practical guides on leveraging headless browser tools (starting with Puppeteer and Playwright) for testing, monitoring, scraping, performance measuring and more. We called it theheadless.dev. This article is about the different approaches we tried…
Improving the SSL certificate expiration alerts
We just updated our SSL certificate expiration alerting. This update gives you more control over where and when you want to receive these alerts. Before today, certificate alerts were set as part of "Alert Settings" tab, either globally or using specific settings for checks & check groups. This wasn't all…
Changelog: Opsgenie, Dashboard improvements, Terraform and more
Here is an overview of the features & fixes we released over the last ~2 months: Opsgenie integrationCheckly can now create and resolve alerts in your Opsgenie team with our dedicated integration. Opsgenie integration👉 Read more on how to integrate Checkly with your Opsgenie team in our docs Dashboard improvementsYou…
How we monitor Checkly (updated)
Update 29-06-2020 Last week we released the first version of our OpsGenie integration, making it easier for ourselves and our users to leverage Checkly together with the popular alerting and incident management platform. Here is how it looks like: Our plan is to put additional work into our integration to…
Post mortem: checks with async IIFE reporting success incorrectly
Between 05.06.2020-12.06.2020, checks using the async IIFE syntax had runs marked as passed when, in reality, they were not correctly executed. Impact We detected 18 active checks which were affected. Root Causes Changes related to additional security measures for Browser checks changed the default behavior of…