What are some alternatives?
When comparing Browserless and Percy, you can also consider the following products
BrowserStack - Test your website for cross browser compatibility on real browsers. Instant access to multiple desktop and mobile browsers. Get Free Trial.
LambdaTest - Free cross browser compatibility testing tool online to test on 2000+ desktop and mobile browsers. Get online virtual access to machines running real browsers and real operating systems on cloud.
Jason - Infinitely hackable mobile client
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Nightwatch.js - Write efficient and straightforward end-to-end tests in Node.js which run against a Selenium/WebDriver server.
DocRaptor - Forget tedious coding or server management: Our simple API that makes it easy to convert HTML to PDF, XLS and Excel files.