How to change the permanent link in blogger
In this short tutorial I show you how to change the permanent link of a published publication to reduce its length or to make it more meaningful
This can be done by sending the publication back to the draft, editing the publication and republishing it.
Modification of the permanent link
Choose the publication you want to modify. Click the Restore Draft button as shown below.
On the right side, under Item settings, click on permanent link.
Click on the Personalized permanent link button, enter the new permanent link and click OK as shown below
Click the Publish button at the top to publish the publication.
2-Configuration of redirection
Now if you visit the previous post link (http://www.monsite.com/2017/08/ancienne-publication.html)
The previous permalink will display a 404 error page you can resolve using redirection.
You must create a redirect
From http://www.monsite.com/2017/08/ancienne-publication.html
For http://www.monsite.com/2017/08/nouvelle-publication.html .html