Overlay one PDF on top of another — perfect for adding letterheads, backgrounds, or templates to content PDFs. All processed in your browser.
The PDF overlay operation — placing one PDF visually on top of another — enables a specific and very useful workflow: applying a standard template or letterhead to variable content. A design agency might have a branded letterhead PDF (with logo, address, and footer) that they want to apply to client-facing content PDFs. A legal firm might have a standard stamp or watermark PDF that they apply to case documents. A teacher might have a background pattern PDF that they layer behind student worksheet content.
The ability to use a pdf overlay tool free online no upload makes this workflow accessible without expensive desktop software and without exposing your documents to third-party cloud services. iFixMyPDF's overlay tool lets you upload both PDFs — the background and the content — and combines them page by page in your browser.
Quick Tip: For best results, both PDFs should have the same page dimensions. If they have different sizes, the overlay will scale the top PDF to match the base PDF's page size.
The ability to combine two pdf files as layers browser-side uses PDF-lib's page embedding feature. The background PDF is loaded as the base document. Each page of the overlay PDF is embedded into the corresponding page of the background PDF, positioned at the origin (0,0) and scaled to match the page dimensions.
This add letterhead to pdf content free approach creates a combined visual layer on each page. The overlay is applied at 50% opacity by default, which allows content from both layers to be visible simultaneously. For a completely opaque overlay, the typical use case would be a content PDF layered on a background design — where the content PDF's text and graphics appear above the background's design elements.
When you overlay background pdf without account requirements, both documents stay entirely on your device throughout the process. The stamp background on pdf privately approach of iFixMyPDF means no document data, no letterhead designs, and no content is transmitted to any server. This is important for organizations with strict data handling policies who still need the flexibility to apply standard templates to variable documents.
PDF overlay is a professional document workflow tool that iFixMyPDF makes free, accessible, and private. Whether you are applying letterheads, background designs, or template stamps to content PDFs, the tool delivers a combined result in seconds — without any cloud processing or account requirements.