Not much nonsense, check whether the journal is indexed by SCI, its division, and the number of impact factors. My most commonly used website is Letpub search:
click on the link.
Although the update may not be particularly timely, most of them are Exactly, enough for queries.
To check whether a journal is indexed by EI, most of the scenarios that need this are to check whether a certain Chinese journal is indexed by EI. There is really a ready-made method: go to the official website of EI and click on the link, pretty boy Find and click to download all EI indexed
journal forms , the table on the third page is the following list of Chinese periodicals. Those who are too lazy to look for it can directly click on the link and click me to download.compendex source list
The website is missing, let me know in the comments, and I will update it, pretty boy!