Standalone JavaScript function that removes JavaScript and HTML restrictions that block pasting, editing, or autofilling text fields (like email or password inputs) on a web page.

README.md

restore-paste.js — Bookmarklet

Standalone JavaScript that removes JavaScript/HTML restrictions blocking paste, edit, or autofill on input and textarea fields (e.g. password fields that block pasting).

This version is packaged as a bookmarklet — a bookmark you click to instantly run the script on whatever page you're viewing. No extension required.

Install (one-time, Firefox)

1. Show the bookmarks toolbar: Ctrl+Shift+B (or right-click any toolbar → Bookmarks Toolbar).
2. Right-click the toolbar → New Bookmark…
3. Name: Restore Paste
4. Location: paste the code below exactly as-is.
5. Click Save.

javascript:(function(){document.querySelectorAll('input, textarea').forEach(function(el){el.removeAttribute('onpaste');el.onpaste=null;el.removeAttribute('readonly');el.removeAttribute('disabled');el.addEventListener('paste',function(e){e.stopImmediatePropagation();},true);});console.log('All paste restrictions removed!');})();

Note: Paste this into the bookmark's Location field in the dialog above — not directly into the address bar. Firefox strips javascript: URLs typed/pasted straight into the URL bar as an anti-pastejacking safeguard, but the bookmark dialog is unaffected.

Use

Navigate to any page with a stubborn paste-blocked field, then click Restore Paste in your bookmarks toolbar. Check the console for confirmation: All paste restrictions removed!

Source

Unminified version, for reference:

(function() {
    document.querySelectorAll('input, textarea').forEach(el => {
        el.removeAttribute('onpaste');
        el.onpaste = null;
        el.removeAttribute('readonly');
        el.removeAttribute('disabled');
        el.addEventListener('paste', function(e) {
            e.stopImmediatePropagation();
        }, true);
    });
    console.log('All paste restrictions removed!');
})();

bookmarklet.js

javascript:(function(){document.querySelectorAll('input, textarea').forEach(function(el){el.removeAttribute('onpaste');el.onpaste=null;el.removeAttribute('readonly');el.removeAttribute('disabled');el.addEventListener('paste',function(e){e.stopImmediatePropagation();},true);});console.log('All paste restrictions removed!');})();

restore-paste.js

(function() {
    document.querySelectorAll('input, textarea').forEach(el => {
        el.removeAttribute('onpaste');
        el.onpaste = null;
        el.removeAttribute('readonly');
        el.removeAttribute('disabled');
        el.addEventListener('paste', function(e) {
            e.stopImmediatePropagation();
        }, true);
    });
    console.log('All paste restrictions removed!');
})();