Free tool

AI image stamper

Add "AI Generated" stamps or watermarks to images for transparency and compliance with AI disclosure requirements.

How it works

Upload an image, customize your stamp or watermark style, then download the labeled image. Drag the stamp to reposition it. All processing happens locally in your browser - your images are never uploaded to any server.

Drag or click to add photo

JPG, PNG, WEBP, HEIC supported

Stamp text

Font & color

Color

Size & opacity

Size

15%

Opacity

30%

Rotation

-15°

Why label AI-generated images?

Regulatory compliance

Laws like California's AI Transparency Act (SB 942) and the EU AI Act require disclosure when content is AI-generated. Proper labeling helps you stay compliant.

Build trust

Transparency about AI usage builds trust with your audience. Clear labeling shows you're committed to ethical AI practices.

Combat misinformation

Labeled AI images help prevent the spread of misinformation by making it clear when content is synthetically generated.

Privacy first

This tool runs entirely in your browser. Your images are never uploaded to any server, ensuring complete privacy.

Frequently asked questions

What regulations require AI image labeling?

Several major regulations now require disclosure of AI-generated content. The EU AI Act (Article 50) requires AI-generated content to be marked in machine-readable format. California's AI Transparency Act (SB 942) mandates embedded latent disclosures in AI-generated images. South Korea's AI Basic Act (Article 31) requires labeling content that's difficult to distinguish from reality. China's Deep Synthesis Provisions require identifiable markers on synthesized content.

What's the difference between a stamp and a watermark?

A stamp is a single label placed at a specific position on the image that you can drag to reposition. A watermark creates a repeating diagonal pattern across the entire image, making it harder to crop out. Both serve the purpose of disclosure, but watermarks provide more persistent labeling.

Is my image uploaded to a server?

No. All image processing happens entirely in your browser using HTML5 Canvas. Your images never leave your device and are never uploaded to any server. This ensures complete privacy and security for your content.

What image formats are supported?

The tool supports JPG, PNG, WEBP, and HEIC image formats. The stamped image is always downloaded as a PNG file to preserve quality and transparency.

What opacity should I use for the stamp?

The default opacity is set to 30%, which provides a visible but non-intrusive label. For regulatory compliance, the label should be clearly visible to viewers. You can adjust the opacity based on your specific needs—higher opacity for more prominent disclosure, lower for subtle watermarking.

Can I use custom text for the stamp?

Yes. While we provide preset options like "AI GENERATED", "AI MODIFIED", "AI ASSISTED", and "SYNTHETIC", you can also enter any custom text you need. This is useful for specific disclosure requirements or branding purposes.

Does this tool meet all regulatory requirements?

This tool helps you add visible labels to AI-generated images, which is one method of disclosure accepted by various regulations. However, some regulations (like the EU AI Act) also accept machine-readable metadata like C2PA Content Credentials. We recommend consulting the specific requirements of the regulations that apply to your use case and jurisdiction.

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