I have received some certificates from code-learning sites like Sololearn, Codecademy and may eventually get some from W3Schools as well, but is there anything to them?
The code-learning sites tell us that we can upload them to our LinkedIn, but do such certificates hold any type of esteem in a professional setting in your experience? Are they worth uploading to LinkedIn?
Would you say certificates from code-learning websites are worth anything?
They can be part of the story you tell about yourself, but depending on the reputation of the source, they could be a negative signal (which is silly because you're not learning in just one place).
Try to put yourself in the shoes of an evaluator who is going to put a lot of kneejerk bias into the process. MIT is worth more than Codecademy, but by how much and should you put both?