Your files never leave your device. All processing happens in your browser.
Open the Img Stop Bulk Watermark tool, add your photos, type your watermark text or upload your logo, choose position, size and opacity (or Tile), then click Watermark all. The watermark is scaled to each photo and you download all images as a ZIP.
About the Bulk Watermark
The Img Stop Bulk Watermark tool protects a whole batch of photos with the same text or logo. The watermark size is relative to each image, so it looks the same on small and large, portrait and landscape photos.
Place it in a corner, the center, or tile it across the whole picture at an angle for stronger protection. Preview the result on any photo with the before/after slider before you start. Your photos and logo never leave your device.
Key features
- Text or logoType a copyright line or upload a transparent PNG logo.
- Scales to every photoSize is a percentage, so every image gets a matching watermark.
- 9 positions or tileCorners, edges, center, or a repeating diagonal pattern.
- Opacity & marginFrom subtle to strong, with an adjustable distance from the edge.
- Fonts and colorsChoose the font and color for text watermarks.
- PrivateYour photos and logo are processed on your device.
How to use the Bulk Watermark
- Add photos Drop the photos or folder you want to watermark.
- Create the watermark Type text or upload your logo, and pick font and color.
- Place it Choose position, size, opacity and margin – or Tile.
- Watermark and download Click Watermark all and download the ZIP.
Bulk Watermark at a glance
| Price | Free, no sign up, no watermark |
|---|---|
| Number of images | No fixed limit – hundreds at once |
| Input formats | JPG, PNG, WebP, HEIC |
| Output | JPG, PNG, WebP or AVIF |
| Download | One ZIP, single files, or straight into a folder |
| Processing | In your browser – files are not uploaded |
When to use it
- Protect a photography portfolio before posting it online.
- Add your shop logo to all product photos.
- Brand real-estate or car listing photos with your agency name.
- Mark documents and IDs as "Copy" before sending them.
- Add a website address to a batch of social media images.
Tips for the best result
- Use a PNG logo with a transparent background for the cleanest look.
- An opacity of 40–60% protects the photo without hiding it.
- Tile mode is the hardest to crop or remove.
- Keep a margin of 2–4% so the watermark is not cut off when photos are shown cropped.
Frequently asked questions
Can I add my logo to many photos at once?
Yes. Choose Logo image, upload your logo, set the position and size, and click Watermark all. The logo is added to every photo in the batch.
Will the watermark be the same size on all photos?
It is the same relative size. The size slider is a percentage of each photo, so the watermark looks consistent on small and large images.
How do I make a watermark hard to remove?
Choose Tile. The text or logo is repeated diagonally across the whole photo, which is much harder to crop or edit out.
Is it free?
Yes, the bulk watermark tool is free and adds no watermark of its own.
Are my photos uploaded?
No. Watermarks are added in your browser.
Learn more
- web.dev: Image performance – why smaller images make pages faster
Last updated October 30, 2026 by the Img Stop team.