Local · Private · Free

Bulk Watermark

Stamp a text or logo watermark across a whole batch of images at once. Everything runs on your machine, nothing is uploaded. No account, no limits.

Drop images here
or click to browse, JPG, PNG, WebP, GIF

Files never leave your browser

Preview updates live · drag the position grid

Watermark text

Color

Font size, 6% of width

Opacity, 55%

Rotation, 0°

Tile / repeat across the whole image

Logo image

Drop or click to add a logo
PNG with transparency works best

Scale, 25% of width

Opacity, 80%

Position

Edge margin, 4% Distance from the edges (ignored when tiling).

Watermark a whole folder, privately

Most batch watermark sites upload every photo to a server first. Digital Heroes draws the watermark with your device's own Canvas, instant, completely private, works offline. Text & logo watermarking, per-image download, and one-click ZIP export of the entire batch are all completely free.

About Bulk Watermark

Bulk Watermark is a free, private image tool that runs entirely in your web browser. Stamp a text label or a logo image across an entire batch of photos at once. Because everything happens locally on your device, your files are never uploaded to a server, no sign-up or installation is required, and it keeps working offline. Like every free tool by Digital Heroes, Bulk Watermark has no usage limits.

What you can do

Batch text watermarking: stamp any text string across dozens of images in one pass.

Logo watermarking: overlay your PNG logo (with transparency) at a chosen size and position.

Control opacity and rotation: fine-tune visibility and angle for a professional look.

Tile mode: repeat the watermark across the whole image for maximum protection.

Instant ZIP download: export all watermarked images as a single archive with one click.

Fully private: no upload, no server, no account. Your images never leave your device.

How to use Bulk Watermark

Open Bulk Watermark in your browser. No signup or install needed.

Drop your images into the upload zone (JPG, PNG, WebP, GIF). They never leave your device.

Choose Text or Logo mode, then set your text, color, size, opacity, rotation, and position.

Watch the live previews update in the thumbnail grid as you adjust each setting.

Download individual images or click "Download all (.zip)" to export the entire batch at once.

Frequently asked questions

Is Bulk Watermark free?

Yes, Bulk Watermark is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Bulk Watermark runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. This tool is a Progressive Web App, once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Bulk Watermark do?

Bulk Watermark lets you stamp a text label or logo image across a whole batch of photos at once. You control the position, size, opacity, rotation, and can tile the watermark across the entire image for full protection. Export each image individually or grab them all in a single ZIP.