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Flatten PDF Files Online

Use our free Flatten PDF tool to merge all layers into a single readable layer. This process converts fillable forms into standard content, locks annotations, and ensures your document looks the same on all devices.

Drag & Drop Your Files Here

Support for PDF, Word, Excel, PowerPoint, and Images. Secure processing up to 100MB.

PDF DOC DOCX RTF PPT PPTX JPEG JPG PNG JFIF BMP WEBP TIFF GIF HEIC HEIF XLS XLSX CSV TXT ODT MD DXF DWG XPS OXPS AI CBZ CBR DJVU DJV EPUB MOBI AZW AZW3 FB2 CHM PAGES WPS HWP XML EML
Make Forms Read-Only

Convert fillable PDF forms into standard, non-editable text. Prevent unwanted changes to your form data by flattening the document.

Merge PDF Layers

Combine multiple layers into a single layer. This solves printing issues where some elements might be hidden or not print correctly.

Lock Annotations

Make comments, highlights, and other annotations permanent parts of the page, ensuring they cannot be moved, edited, or deleted.

Secure Processing

Your documents are processed securely with valid encryption. We automatically delete all files from our servers after 2 hours.

Universal Compatibility

Flattened PDFs are easier to view on mobile devices and simple PDF readers, preventing display errors with complex layers or forms.

Batch Processing

Flatten multiple PDF files at once. Upload several documents and process them all in a single click to save time.

Frequently Asked Questions

Flattening a PDF merges all content layers into one. It converts interactive elements like forms and checklists into static text and images, making them non-editable.

No, flattening is a permanent process. Once flattened, the layers are merged and cannot be separated again. Always keep a backup of your original file.

Our tool uses high-quality rendering to ensure your text and images remain sharp and clear after flattening.

Yes, our Flatten PDF tool is completely free to use with no limits on the number of files you can process.