When this tool is useful
Adding a visible note, label, logo, cover mark, or simple shape when the original page artwork should remain underneath.
How local processing works
The selected overlays are drawn at explicit page coordinates and sizes, the page count is retained, and the saved PDF is reopened to verify the new marks. This adds new page content; it does not edit, delete, reflow, or identify original PDF text.
How to use it
- Prepare a safe working copy: Keep every source unchanged and review the supported input, controls, and limits before processing. Adding a visible note, label, logo, cover mark, or simple shape when the original page artwork should remain underneath.
- Process locally: Run the documented operation in this browser and stop if an unsupported structure is reported. The selected overlays are drawn at explicit page coordinates and sizes, the page count is retained, and the saved PDF is reopened to verify the new marks. This adds new page content; it does not edit, delete, reflow, or identify original PDF text.
- Download and verify: Reopen the output in the destination viewer, inspect every overlay at high zoom, confirm page count and placement, and verify that no overlay hides source content unintentionally.
Important limitations
It is not an original-text editor, OCR editor, redaction tool, layer editor, or layout engine. Built-in font coverage is limited, signed PDFs are refused, and links, forms, tags, annotations, and advanced page behavior still need separate checks.
Verify the downloaded result
Reopen the output in the destination viewer, inspect every overlay at high zoom, confirm page count and placement, and verify that no overlay hides source content unintentionally.
Private by design
Your files stay in this browser. The tool does not upload the source or output to our servers.
Questions and answers
When is this tool useful?
Adding a visible note, label, logo, cover mark, or simple shape when the original page artwork should remain underneath.
What does the browser actually do?
The selected overlays are drawn at explicit page coordinates and sizes, the page count is retained, and the saved PDF is reopened to verify the new marks. This adds new page content; it does not edit, delete, reflow, or identify original PDF text.
Which limits must I understand?
It is not an original-text editor, OCR editor, redaction tool, layer editor, or layout engine. Built-in font coverage is limited, signed PDFs are refused, and links, forms, tags, annotations, and advanced page behavior still need separate checks.
How should I verify the result?
Reopen the output in the destination viewer, inspect every overlay at high zoom, confirm page count and placement, and verify that no overlay hides source content unintentionally.