Free Flatten PDF Online

Why do you need to Flatten a PDF?

Flattening a PDF is an essential step for preparing official, legal, and confidential documents before sharing them. Here is why you should flatten your PDF files:

• Lock Fillable Forms: Merges all input fields into static background elements so no one can alter your responses or change checkboxes.
• Secure Signatures & Annotations: Stamps electronic signatures, highlights, and annotations directly onto the page so they cannot be removed or edited.
• Prevent Text Copying: Renders pages as high-resolution images, disabling direct text highlighting and copying.
• 100% Offline Processing: All processing is done locally inside your browser, keeping your sensitive documents completely private.