24picture

Add Watermark

Q: Can I use my own logo or signature?

Yes. Switch to Image / Logo, upload a PNG (a transparent background works best), then move, rotate, scale and set its opacity. No transparent signature yet? Use our free Signature Maker, then upload the result.

Q: Can I watermark several images at once?

Yes. Upload multiple images and the same watermark is applied to all of them on download. If the images have different resolutions, we show a notice because the placement may shift slightly.

Add text watermarks to protect your images. Customize font, color, opacity, and position. Supports batch processing.

Drop your images here

or click to browse files

Supports JPG, PNG, WebP • Max 10MB per file

Text & Image Watermarks

Add a text watermark or upload your own logo / signature, then freely move, rotate, scale, and adjust opacity on the canvas.

100% Private

All processing happens locally. Your files never leave your device.

Batch Processing

Apply the same watermark to multiple images at once. We even warn you when their resolutions differ.

Frequently Asked Questions

Upload your image and a "24picture" text watermark appears automatically. Edit the text, font and color, then drag it to move, use the corner handle to scale, and the top handle to rotate.

Yes. Switch to "Image / Logo", upload a PNG (a transparent background works best), then move, rotate, scale and set its opacity. No transparent signature yet? Use our free Signature Maker, then upload the result here.

Every watermark has a transform frame. Drag inside it to move, drag a corner handle to scale, and drag the handle above it to rotate. You can also use the Size, Opacity and Rotation sliders.

Upload multiple images and the same watermark is applied to all of them on download. If the images have different resolutions, we show a notice because the placement may shift slightly.

No. Everything runs locally in your browser using the Canvas API. Your images and your watermark never leave your device.

May 15, 2026

Image Compression: Reduce File Size Without Losing Quality

After adding watermarks, compress your images for faster web delivery without visible quality loss.

May 15, 2026

Image Resizing Best Practices for Web & Social Media

Learn the optimal dimensions for every platform before adding your watermark.

May 14, 2026

PNG vs WebP: Why WebP is the Future of Web Images

Choose the right format for your watermarked images — PNG for transparency, WebP for smaller files.