Flatten PDF online for free. Flatten the layers, forms, and annotations in your pdf in seconds — fast, secure, and with no software to install.
Yes. You can flatten the layers, forms, and annotations in your PDF right here online for free — no account, email, or credit card required. Sign up only if you want higher limits, larger files, or API access.
Yes. Uploads travel over an encrypted HTTPS connection, are processed on our servers, and are automatically deleted within a few hours. We never share or sell your documents.
No. PDF4 works entirely in your web browser, so there is nothing to download or install. It runs on Windows, macOS, Linux, Android, and iOS.