Docu StopSee what it does
Protect images with a custom text watermark
Add text watermarks to protect your images
If you share images online, a watermark is the cheapest insurance against unauthorized use. Our image watermark tool stamps custom text onto any JPG, PNG, GIF, or WebP file, with control over the text, opacity, and position. Photographers mark previews with their name or brand, designers label work-in-progress, and businesses stamp client previews — all in seconds.
The watermark is applied directly to the image pixels, so it cannot be removed later, which is exactly what makes it a deterrent. Keep a backup of the original if you may need an unmarked version. The tool is free, requires no account, and your image is deleted automatically after processing.
How to watermark an image
- Upload your image
- Enter the watermark text
- Adjust opacity and position to taste
- Click Process to apply the watermark
- Download your watermarked image
Tips for best results
- Use a subtle opacity (0.2-0.4) so the watermark marks without ruining the image.
- Corner placement suits previews; a diagonal or centered mark deters cropping.
- Keep the original file stored safely — the watermark is permanent.
- Photographers often combine a corner watermark with a low-res preview.
When should you watermark an image?
Watermarking protects work that will be seen before it is sold or published. Photographers and designers share previews with clients knowing the mark is permanent; agencies stamp mockups with "SAMPLE" or the client name; sellers brand product photos used in listings; social creators prevent screenshots from circulating uncredited. A clear watermark makes copying a bad deal.
What to know before you start
Watermarks are baked into the pixels and cannot be undone, so always retain the original. You control text, opacity, and position per image; the web tool processes one image at a time. Files are encrypted in transit and deleted after processing — free on first use.
Frequently asked questions
Can I watermark multiple images at once?
The web tool processes one image at a time. Adjust opacity (0-1) to control how visible the watermark is from subtle to bold.
Is the watermark removable?
No — once applied, the watermark is baked into the image pixels. Keep a backup of the original if you might need an unmarked version.
Can photographers use this to protect their work?
Yes — photographers commonly use text watermarks to deter unauthorized use when sharing previews online.
Is this tool free?
Yes, all Docu Stop web tools are completely free to use with no hidden charges or credit card required.
Are my files private and secure?
Absolutely. Files are processed over encrypted connections and automatically deleted from our servers after processing. We never access, store, or share your documents.
What is the file size limit?
Uploads are limited to approximately 4.5 MB per request due to server constraints. For larger files, download the Docu Stop mobile app which supports documents of any size.