CodeASystem PDF tools
Flatten PDF forms into permanent pages.
Lock all interactive form fields, checkboxes, and text inputs permanently into standard page contents without sending your PDF to a server.
Flatten PDF Forms
Make fillable form fields, checkboxes, and text inputs permanent and uneditable on all pages.
Processing happens entirely inside your browser. No files are uploaded to any server.
How it works
Permanent form locking. Zero uploads.
Upload any PDF containing interactive form fields. The tool uses WebAssembly and client-side JavaScript to bake form values directly into the document structure, ensuring compatibility across all PDF viewers and preventing further edits.