Flatten PDF forms and annotations to make them non-editable and reduce file size for free.
Click or Drag & Drop PDF Files
Select PDF documents to flatten forms and annotations
Max file size: 100MBSupported: .pdf files
How to Flatten PDF Documents Online for Free
1.
Upload your PDF documents – Click the "Choose Files" button or drag and drop your PDF files into the FILPDF flatten tool.
Upload PDF files to flatten forms and annotations online free
2.
Configure flattening options – Choose whether to flatten only forms or all annotations based on your needs.
Configure flattening settings for PDF documents
3.
Flatten documents – Click the "Flatten PDFs" button to start converting interactive elements to static content.
Flatten PDF forms and annotations automatically
4.
Download flattened files – Once flattening is complete, download your finalized PDF files with non-editable content. If you processed multiple documents, you can also click Download All Files to save every flattened PDF at once.
Download PDF files with flattened forms and annotations
Flatten PDF Documents Online
Flatten PDF online for free with FILPDF to make your PDF forms non-editable, remove annotations, and lock all layers in one simple step. Our free PDF flattening tool ensures that form fields, comments, highlights, and signatures become permanent parts of the document, preventing unwanted changes. Whether you need to secure contracts, protect digital signatures, or prepare files for professional printing, FILPDF provides a fast and reliable solution—no Adobe Acrobat required.
With this online PDF flatten tool, you can quickly remove form fields, embed annotations, and convert interactive elements into a single flat page. Flattening your PDF not only keeps important information intact but also helps reduce file size and ensures that your document displays the same on any device. Use it to safeguard legal documents, invoices, and scanned forms or to share print-ready PDFs without worrying about editable fields or hidden layers.
FILPDF works directly in your browser, allowing you to flatten PDFs on Windows, Mac, iPhone, or Android without installing extra software. Simply upload your file, click to flatten, and download a secure, non-editable PDF in seconds. Whether you need to flatten a single page or a multi-page form, our free online service makes the process effortless, fast, and completely safe.
FAQ – Flatten PDF
What does it mean to flatten a PDF?
Flattening a PDF means merging all interactive elements—such as form fields, comments, and annotations—into a single, static layer. This process makes the file non-editable and ensures it displays consistently on any device.
How can I flatten a PDF online for free?
You can upload your document to a free online PDF flatten tool, click to process, and download the flattened version in seconds. No installation or paid software is required.
How do I flatten a PDF to make it non-editable?
Use an online flattening service to convert all layers and form fields into a fixed page. Once flattened, the text and annotations become permanent and cannot be modified.
Can flattening a PDF remove annotations or comments?
Yes. Flattening embeds annotations and comments into the document's content, effectively removing their editable properties while keeping their appearance intact.
Is it possible to flatten a PDF without Adobe Acrobat?
Absolutely. Many free browser-based tools, including FILPDF, allow you to flatten PDFs directly online without using Adobe Acrobat or other paid software.
Will flattening a PDF reduce file size?
Often yes. By merging layers and removing interactive elements, flattening can help reduce overall file size and make sharing or printing faster.
Does flattening a PDF protect digital signatures?
Flattening locks the visual appearance of a signature but may invalidate the digital certificate. Always check your requirements before flattening signed documents.
Is it safe to use an online PDF flattening tool?
Reputable services use secure connections and automatically delete uploaded files after processing. For sensitive data, choose trusted platforms and review their privacy policies.
