slddrw to pdf services is a great way to convert your SolidWorks drawings into PDF format. This service is available from many online providers, and is a quick and easy way to get your drawings into a format that can be viewed by anyone with a PDF reader.
There are many online services that can convert slddrw files to pdfs, such as Zamzar and FileZigzag.
Overall, there are a variety of slddrw to pdf services available online and offline. Deciding which one is best for you will depend on your specific needs and preferences. If you need a high-quality conversion with no watermarks or limits, you may need to pay for a premium service. However, if you just need a basic conversion for occasional use, there are free options available that may be sufficient.