Form Field Renamer
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What is Form Field Renamer?
Form Field Renamer changes the internal names of form fields in a PDF. You provide a mapping of current field names to new names, and the tool updates the PDF's /T entry for each matching field using pdf-lib's low-level PDFName API.
How to Use Form Field Renamer
- Upload your PDF form.
- Provide a rename map as a JSON object mapping old field names to new field names.
- Click Rename. The tool updates each matching field's internal name.
- Download the result as
renamed-fields.pdf.
Why Use Form Field Renamer?
Renaming form fields is useful when field names are auto-generated or cryptic (e.g., "field_001" → "Full Name"), when consolidating forms from different sources with conflicting names, or when preparing forms for systems that expect specific field name conventions.
Privacy & Security
Your files never leave your browser. The renaming happens entirely on your device. Nothing is uploaded to Racira's servers, no copies are stored in the cloud, and no file data is transmitted at any point.
Frequently Asked Questions
Will renaming break form functionality?
Renaming changes the field identifier but preserves the field's type, value, position, and appearance. Form functionality is unaffected — only the internal name changes. However, if external scripts or databases reference the old field names, those references will need updating.