Bescherelle: French Verb Conjugation
Here is your best friend / Voici votre meilleur ami!: http://bescherelle.com/conjugueur.php
Type in any verb and there you go!
There are also some good games to practise verbs on the site. I had such a love hate relationship with my bescherelle in school but the online version is nice. I also tried the Bescerelle app recently, it’s like next level grammer practice. (it’s all in french) I really like it but only the first few lessons are free, but still worthwhile.