PDFCrowd might be a bit more popular than JavaScript.com. We know about 1 link to it since March 2021 and only 1 link to JavaScript.com. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The best resource I know of is Javascript.com for learning Javascript for the first time. It's made by Pluralsight which is a site that contains courses. - Source: dev.to / almost 3 years ago
To follow on with this, I've used https://pdfcrowd.com/ too. Source: about 4 years ago
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