Dynamic Duniya
Dynamic Duniya

PDF Watermarking

Stamp text (font size, opacity, rotation, corner/center placement) or a JPEG/PNG image across every page using pdf-lib locally. Encrypted PDFs are not supported. Download a watermarked copy — your file never leaves the browser.

pdfwatermark

Category: File Conversion & Handling

Watermarks are applied locally in your browser. Password-protected PDFs cannot be opened here.

PDF to watermark

Position

Watermarking without uploading

Load a normal (unencrypted) PDF, choose text or image mode, tune opacity and placement, then apply. pdf-lib draws the watermark on each page in memory and you download a new file. This is ideal for drafts, internal review copies, or light branding — not a substitute for cryptographic signing or legal redaction.

Layout notes

Text watermarks use a standard bold Helvetica font at the size you set and can be rotated. Image watermarks accept JPEG or PNG and scale relative to page width. Complex PDFs with unusual page sizes still receive the stamp based on the same corner or center presets.

Frequently Asked Questions

Why does my encrypted PDF fail?

The tool does not ask for a password. Decrypt the file with a trusted local tool first, then watermark the unlocked PDF.

Will watermarks appear under existing content?

Watermarks are drawn as additional content on the page order managed by pdf-lib; very dense vector art might visually overlap depending on how the PDF was built. Always preview the download.

Tips

Quick guidance for using our tools safely and effectively.

Privacy

Files are processed on the server for conversion only and are not used for training or shared with third parties.

Best results

Use the formats suggested in each tool. Large media files may take longer — keep the tab open until processing finishes.

Need something else?

Browse related tools below or explore other categories from the main Dev Tools hub.

Related tools

More utilities in the same category.

PDF to JPG / PNG

New

Export PDF pages as JPEG or PNG images in your browser (Mozilla pdf.js + canvas). Pick render scale, optional page list, and JPEG quality. Multi-page exports download as a ZIP. Max ~35 MB file size and up to 1000 pages (browser memory is the practical limit — use page ranges for huge jobs) — nothing is uploaded.

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JPG / PNG to PDF

New

Stack JPEG or PNG files into one PDF with pdf-lib: reorder the list, choose A4 or Letter, set margins, and fit each image to the page — all client-side, no server upload. Up to 12 images per run.

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PDF to DOCX

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Upload a PDF (up to 50 MB) and convert to a downloadable .docx via Dynamic Duniya’s file API — best for text-heavy PDFs; multi-column layouts and images may not transfer cleanly. Progress while uploading; open the result in Word or Google Docs and review formatting.

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DOCX to PDF

New

Upload Word .docx or legacy .doc (up to 50 MB) and download a PDF via the server file API. Output fidelity depends on LibreOffice on the server — review complex layouts. Progress while uploading; suggested download name converted.pdf.

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Merge / Split PDF

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Merge: first-page previews in a horizontal strip — drag cards to set merge order. Split: optional “Load page previews” then drag thumbnails (four per row, scrollable) to reorder pages before splitting by ranges or every N pages; ranges use preview slot numbers when previews are loaded. Zip when multiple parts. Client-side pdf.js + pdf-lib — max ~35 MB per file, 150 pages, 12 PDFs for merge.

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PDF to Excel

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Upload a PDF (up to 50 MB) and extract tables into an .xlsx via the server file API. Toggle “Each page becomes a separate sheet”; pass separate_sheets to the backend. Best for PDFs with clear tables — scanned pages should use the Document OCR tool first. Download extracted.xlsx and review cell layout.

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