Redirect old url to new url automatically

[Eros eros]

Hi, we would like to change the URLs of all the articles but naturally we will encounter many 404s. How can we do a general redirect of old URLs to new URLs?

[Nickz]

Nothing in IT is automatic. There is no magic in IT. You need to initiate any action. 
1st what is naturally for you?

You could make the 404 a sitemap. Nicely designed, you might archive that searcher keep searching. 

[Eros eros]

You're right, I expressed myself badly but I didn't understand your advice. I'll give you an example: if I change from www.miosito.com/id-article.html to www.miosito.com/products/article how can I redirect to the second if I type the first one?

[Knowband Plugins]

Hi,

If your URLs follow a specific pattern, you can modify the .htaccess file using RewriteRule for bulk redirects.

Alternatively, if the redirects are dynamic or unique, you can override classes/Dispatcher.php to handle them programmatically.

Regards.