Why use Stamp PDF?
Stamps differ from watermarks: they often behave like foreground seals—approved, received on a date, or signed-off—for a specific page range. PDFBaba supports text or image stamps with pdfcpu appearance strings for advanced users. There is no signup wall, and files are deleted after about one hour. If you need tiled confidential backgrounds across every page, Watermark PDF is usually the better semantic fit.
Supported files & limits
One PDF; foreground text or image stamps. The default upload limit is 100MB per file; administrators can raise or lower this via server configuration. Different from tiled watermarks—better for one-off approvals.
Privacy & data retention
PDFBaba is built for quick tasks: your uploads and generated downloads are kept only long enough to process your request and are automatically deleted after about one hour. We do not require signup for these tools, and we do not use your documents to train AI models. For full details on cookies, analytics, and legal terms, read our Privacy Policy.
Features
How to use
- 1
Upload your source file.
- 2
Click apply stamp to process the document.
- 3
Download the output file.
Related tools
Frequently Asked Questions
Is Stamp PDF free to use?
Yes. This tool is available for free with no account required for basic usage.
Are files secure when using Stamp PDF?
Uploaded files are processed temporarily and automatically removed after one hour.
How do I get the best result with Stamp PDF?
Use clean source files and review output after processing, especially for complex stamp pdf workflows.
Do I need an account or signup?
No. PDFBaba does not require signup for these tools. Upload, process, and download without creating an account.
Is there a watermark on the output?
Output from this tool is not watermarked by PDFBaba. You get a clean file suitable for work and sharing.
What is the maximum file upload size?
The default limit is 100MB per file on the server. Your host or administrator can change this via environment configuration. If a file fails to upload, try compressing or splitting it first.
Can I use this tool on my phone or tablet?
Yes. PDFBaba works in modern mobile browsers. Very large files or complex previews may be smoother on a desktop with a stable connection.
Is there a daily usage limit?
To keep the service fast for everyone, rate limits may apply per IP. Typical personal use is rarely affected. If you hit a limit, wait briefly and try again.
What if my PDF is password-protected?
For Stamp PDF, use an unlocked PDF when possible. If the file asks for a password in a reader, unlock it with our Unlock PDF tool first, then run Stamp PDF on the decrypted file.