Is this a qualified (eIDAS) electronic signature?

No. You can embed a visual signature (image or text) in the PDF. A qualified signature requires a dedicated service provider.

Processing is entirely client-side, so there is no file upload.

Does the document quality degrade?

The signature and seal are embedded as images and the watermark is rendered across the entire page; the export uses gentle compression.

Can it be applied to multiple pages?

Yes. The watermark appears on every page; signatures and seals can be placed page by page.

PDF Toolkit – Watermark, Signature and Seal

Language

Phrase

Custom text

Font

Size (pt)

Color

Opacity

0.18

Angle (°)

-45°

0 / 0

Zoom 100%

PDF signature, watermark and seal – quick guide

Use this page to add a signature, watermark or seal to your document with purely client-side PDF editing. There is no upload – everything runs in your browser.

Steps:

Open PDF: click to upload or drag and drop the file.
Select mode: choose Watermark, Signature (Draw / Type / Image) or Seal.
Adjust settings:
- Watermark: language/phrase or custom text, font, size, color, opacity and angle – the watermark is centered on every page.
- Signature: draw on a canvas, type with a handwriting style font or upload an image; colour and size can be adjusted.
- Seal: specify 1–4 lines of text and choose a colour.
Position: drag the element to the desired point; use the corner handle to resize and the icon to rotate it. You can add multiple elements per page.
Save / Print: export to a new PDF or print directly.

Note: password-protected PDFs cannot be edited – remove the protection and reload the file.

When is it useful?

Quickly sign forms and declarations (drawn, typed or image signatures).
Add “CONFIDENTIAL / DRAFT” style PDF watermarks for consistent labelling.
Place a company seal (multi line text) on proposals and invoices.
Internal approval – add multiple signatures and watermarks in the same document.
Branding – consistently apply a logo or text watermark.

Frequently asked questions

Is this a qualified (eIDAS) electronic signature?: No. Here you can embed a visual signature (image or text) in the PDF. A qualified signature requires a dedicated service provider.
What about privacy?: All operations occur in your browser, and the file is never uploaded (no uploads).
Does the document quality degrade?: The signature and seal are embedded as images and the watermark is rendered across the whole page; the export uses gentle compression.
Can it be applied to multiple pages?: Yes. The watermark appears in the middle of every page; signatures and seals can be placed on a page by page basis.