Branding your PDFs with a logo watermark protects documents and reinforces company identity. Here is how to add a logo watermark for free.
Use a PNG file with a transparent background for best results. A transparent-background PNG blends cleanly into any document.
Tip: Most company logos are available as PNG from the brand's media kit. The background should be transparent — shown as a checkerboard pattern in image editors.
Go to pdfeditor.onl/watermark-pdf. Upload your PDF and switch to Image watermark mode. Upload your logo PNG.
Set opacity (20–40% is typical), size as a percentage of page width, and position. Center placement is most common.
Click Apply to All Pages. Download the watermarked PDF — your logo appears on every page.
Yes. Apply to All Pages stamps the logo on every page simultaneously.
For a subtle brand mark: 15–25%. For a more prominent presence: 30–50%.
Yes — completely free at pdfeditor.onl/watermark-pdf.