Maxlength Soft

Maximum length limitation of text fields limiting the field data column in database as well. It also means maximum length of field cannot be changed when data is already filled.

Maxlength Soft allows you to set maximum length of text fields without limiting column in databse. Generally speaking this module simply provides per instance setting and sets the maxlength attribute in widget.

-------- SIMILAR MODULES-----------------------------------------------------

For Drupal 8 and 9 websites, you can use the Maxlength module to
configure soft character limits on fields.