How to remove spaces from PDF form field names using a script?

[Anantha Prabu G]

Hi everyone,

I have a PDF with multiple form fields, some of which have spaces in their names (e.g., Text Field 1). I want to rename them to remove spaces (e.g., TextField1).

I tried using Acrobat Javascript:

for (var i = 0; i < this.numFields; i++) {
    var oldName = this.getNthFieldName(i);
    var newName = oldName.replace(/\s+/g, "");
    this.renameField(oldName, newName); // Throws TypeError
}
…but I get this error:

TypeError: this.renameField is not a function

[JR Boulay · Accepted solution]

"renameField" is not a function.

A field cannot be renamed directly. You must save its properties, delete the existing field, and recreate another one in the same place.
The disadvantage is that the field's actions, format, etc. are lost during this process.
You should use this script: https://vielhuber.de/en/blog/rename-pdf-form-fields-en-masse/

[Anantha Prabu G]

Thank you very much @JR Boulay