You can use the Broken Link Checker plugin to find broken links that are stored in Advanced Custom Fields.
You need to add the list of Custom Fields that you want Broken Link Checker to scan by registering them under:
WordPress Dashboard → Link Checker → Local [old] → Settings → Look For Links In → ACF fields.
But there’s a trick, instead of using the field name (i.e. articles_pdf_url) you need to use the field key (i.e. field_659cb163927a4).
To find the keys of the fields, follow these instructions:
- Navigate to WordPress Dashboard → ACF → Tools.
- Click Toggle All in the Export box.
- Click Generate PHP.
- Use the Search feature of your browser to find the field name of the field you want to retrieve the key for:
5. Add that key in the ACF fields option in Broken Link Checker.
