# BigWatermark

> BigWatermark is a free online tool that adds text or logo watermarks to many PDFs and images (JPG, PNG, WebP) at once. Upload files or a ZIP, preview live and download everything as a ZIP. PDFs and images are processed locally in the browser and never uploaded; Word documents are converted to PDF on the server and deleted immediately after conversion.

## Key facts
- Price: Free — no sign-up, no subscription, no branding added to your files
- Input formats: PDF, JPG/JPEG, PNG, WebP, DOCX/DOC (converted to PDF) and ZIP archives
- Output: Watermarked PDFs and images in their original format, individually or as one ZIP
- Watermark types: Text (font, size, color, spacing) or image/logo (PNG, JPG, WebP, SVG)
- Layout options: Opacity, rotation, 9 positions, custom X/Y, tiled grid or staggered pattern
- PDF page targeting: All, current, first, last, odd, even or custom ranges such as 1-3, 8
- Where files are processed: PDFs and images in your browser; Word files on our server, deleted right after conversion
- Batch size: No fixed limit; files are processed one by one, so it depends on your device memory

## Tools
- [BigWatermark – Bulk Watermark PDFs & Images Online Free](https://bigwatermark.com/): Add text or logo watermarks to hundreds of PDFs, JPG, PNG and WebP images at once. Upload files or a ZIP, preview live, download all as a ZIP. Free and private.
- [Add Watermark to PDF Online Free – Batch PDFs](https://bigwatermark.com/pdf-watermark): Watermark PDF files online for free. Stamp CONFIDENTIAL, DRAFT or your logo on every page, choose pages, tile patterns and batch-process PDFs in your browser.
- [Watermark Photos in Bulk – JPG, PNG, WebP](https://bigwatermark.com/image-watermark): Batch watermark photos online. Add your logo or © text to JPG, PNG and WebP images at full resolution, preview live, then download them all as a ZIP. Free and private.
- [Bulk Watermark a ZIP of PDFs & Images Online](https://bigwatermark.com/bulk-watermark-zip): Upload a ZIP archive and watermark every PDF and image inside it in one pass. BigWatermark unpacks, stamps and re-zips your files in your browser. No sign-up.

## Guides
- [How to Watermark Multiple PDFs at Once (Free Guide)](https://bigwatermark.com/blog/how-to-watermark-multiple-pdfs): Step-by-step guide to batch watermarking PDFs: add the same text or logo to every page of many PDF files at once, choose pages, and download them all as a ZIP.
- [How to Batch Watermark Photos Without Losing Quality](https://bigwatermark.com/blog/batch-watermark-photos): Learn how to watermark hundreds of JPG, PNG and WebP photos at once while keeping full resolution and sharpness, plus tips on logo files, placement and file formats.
- [Text vs. Logo Watermark: Which Should You Use?](https://bigwatermark.com/blog/text-vs-logo-watermark): Compare text and logo watermarks: when each works best for documents, photos and branding, wording ideas, logo file tips, and how to combine both.
- [Best Watermark Opacity, Size & Placement Settings](https://bigwatermark.com/blog/best-watermark-settings): A practical cheat sheet for watermark opacity, size, rotation, color, placement and tiling — with recommended settings for documents, photos and previews.
- [How to Protect Confidential PDFs Before Sharing](https://bigwatermark.com/blog/protect-confidential-pdfs): A practical checklist for sharing sensitive PDFs: remove hidden data, add a visible watermark, personalize copies, apply passwords and share through safer channels.
- [Do Watermarks Really Stop Image Theft? Honest Answer](https://bigwatermark.com/blog/do-watermarks-prevent-image-theft): What watermarks can and cannot do against image theft, how to make them harder to remove, and the other protections you should combine them with.

## Help and company
- [Watermark FAQ – Privacy, Formats & Settings](https://bigwatermark.com/faq): Answers to common questions about BigWatermark: file privacy, supported formats, ZIP handling, logo watermarks, page targeting, non-Latin text and troubleshooting.
- [Watermarking Guides & Tips](https://bigwatermark.com/blog): Practical guides to watermarking PDFs and photos: batch workflows, best opacity and placement settings, protecting confidential files and preventing image theft.
- [About BigWatermark – Free Bulk Watermarking Tool](https://bigwatermark.com/about): Learn why BigWatermark was built, how it watermarks PDFs and images privately in your browser, the open-source technology behind it and our editorial standards.
- [Contact BigWatermark – Support, Feedback & Business](https://bigwatermark.com/contact): Get in touch with the BigWatermark team for support, bug reports, feedback, privacy requests, copyright notices or business inquiries.

## Policies
- [Privacy Policy](https://bigwatermark.com/privacy-policy): How BigWatermark handles your data: PDFs and images never leave your browser, Word files are deleted after conversion, plus details on cookies, ads and your rights.
- [Terms and Conditions](https://bigwatermark.com/terms-and-conditions): The terms that govern your use of BigWatermark, including acceptable use, your rights to your files, disclaimers and limitation of liability.
- [Disclaimer](https://bigwatermark.com/disclaimer): Important limits of the BigWatermark tool and website content: no legal advice, no guarantee of protection, external links and advertising disclosure.
- [Cookie Policy](https://bigwatermark.com/cookie-policy): Which cookies and similar technologies BigWatermark and its advertising partners use, why, and how to manage or opt out of them.
- [DMCA & Copyright Policy](https://bigwatermark.com/dmca): How to report copyright infringement on the BigWatermark website, what a valid DMCA notice must include and how counter-notifications work.

## Optional
- [Full text of the site for LLMs](https://bigwatermark.com/llms-full.txt): Complete FAQ, tool documentation and guides in plain text.