Add a watermark
Add your own text or logo watermark to a PDF or photo and download it. Position, opacity, size — everything is customisable.
Click or drag a file here
Click or drag a photo here
Click or drag photos here — one or multiple
Click or drag photos here — one or multiple
Click or drag a photo here
Click or drag a photo here
Click or drag a photo here
Click or drag a photo here
Click or drag a photo here
Click or drag photos here — choose multiple
Click or drag photo(s) or a PDF here — one or many
Advanced — add a title / caption
Click or drag a PDF here
Click or drag a PDF here
Click or drag photos here — choose multiple
Click or drag PDFs here — choose multiple files
Click or drag a PDF here
Click or drag a PDF here
Click or drag a PDF here
Click or drag a PDF here
Step 1 — create your signature
Step 2 — place it on your PDF
Click or drag a PDF here
Click or drag a PDF here
Metadata found in this PDF
After cleaning
Click or drag a photo here
Your files are never uploaded
Every tool on Seal — watermarking, compressing, converting, cropping, all the PDF tools — runs entirely inside your own browser using JavaScript (canvas, pdf-lib, pdf.js). The photo or PDF you choose is never sent to any server. Close the tab, and everything is gone.
What we store
Only two small preferences are saved in your browser's localStorage — your theme choice (day/night) and language choice (English/Hindi). Both stay on your own device and are never sent anywhere.
Google Sign-In
The Google sign-in button in the sidebar is entirely optional and only shows your name/photo — it isn't required to use any tool. Sign-in is handled by Google's own service (accounts.google.com); we never see your password or account data.
Third-party libraries
When the page loads, a few open-source libraries (pdf-lib, pdf.js, JSZip, QRCode.js) are fetched from a public CDN (cdnjs.cloudflare.com), and Google's sign-in script from accounts.google.com. Those requests only fetch library code — your files or their contents are never sent to them.
Tracking or ads
This site does not include any analytics, tracking scripts, or ads.