Flatten PDF

Free online tool to flatten pdf instantly in your browser.

Flatten PDF

Make interactive PDF forms and annotations uneditable by flattening them into the document.

Drop your PDF here

or click to browse from your computer

What happens when I flatten a PDF?
  • All form fields (text boxes, checkboxes) become permanent text/graphics.
  • Drop-down menus are locked to their current selection.
  • Annotations and sticky notes are baked into the page.

Free Online PDF Flattener — Make Forms Uneditable

If you've just filled out a PDF form, signed a contract, or added annotations to a document, the last thing you want is for someone else to easily change your answers. Flatten PDF permanently locks all interactive elements into the base layer of the document.

Why You Need to Flatten PDFs

  • Prevent Edits: A standard PDF form allows anyone who opens it to change the text in the form fields. Flattening converts these fields into standard, uneditable text.
  • Compatibility: Not all PDF viewers support interactive forms. Mobile users or people using basic viewers might see blank spaces instead of your answers. Flattening ensures the document looks exactly the same on every device.
  • Printing Issues: Sometimes printers fail to print the content inside form fields or annotations. Flattening fixes this by turning everything into a standard page graphic.

Fast and Secure Local Processing

Because our tool utilizes modern web technologies, the flattening process happens instantly in your browser memory. Your sensitive contracts and personal forms are never uploaded to our servers.