Upload the target picture
Select the photo or graphic that requires copyright attribution or brand labeling.
Image tools
Image Watermarker
Source image
Local processingWatermarked preview
Press Ctrl or Command and Enter to run the tool.
About this tool
About this tool
Image Watermarker overlays custom text onto photographs with configurable position, opacity, and typography. It composites the watermark locally using browser canvas rendering.
Stamp copyright notices, brand names, or attribution text onto pictures before sharing or publishing. Customize watermark placement, transparency, color, and size while processing images securely on your computer.
Built for daily work
- Add copyright notices to photography portfolios before client proofing.
- Stamp confidential notices onto internal review diagrams and screenshots.
- Brand social media share graphics with your website domain name.
- Protect e-commerce product photos from unauthorized copying.
How to use this tool
How to use this tool
Enter watermark text
Type your copyright notice, company name, or watermark text into the text box.
Configure position and opacity
Select a corner or center position, adjust transparency percentage, and pick text color and font size.
Download the watermarked photo
Verify the watermark placement in the live preview and download the finished image file.
Key features
Key features
Customizable text overlay
Add any copyright notice, URL, or name directly onto your images.
Flexible corner and center placement
Position watermarks in the bottom-right, top-left, center, or other corners automatically.
Adjustable opacity transparency
Set transparency between subtle background stamps and bold visible attribution.
Font size and color choices
Match watermark typography to light or dark image backgrounds using white, black, or accent colors.
100 percent local processing
Watermarks are composited on local browser canvas without sending sensitive photographs to any server.
Practical use cases
Practical use cases
- Add copyright notices to photography portfolios before client proofing.
- Stamp confidential notices onto internal review diagrams and screenshots.
- Brand social media share graphics with your website domain name.
- Protect e-commerce product photos from unauthorized copying.
- Add attribution labels to real estate or listing pictures.
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
Input formatsJPG, PNG, WebP, AVIF, GIF
Output formatsJPG, PNG, WebP
ProcessingLocal browser Canvas text compositing
Task controlsWatermark text, position, opacity slider, font size, color
Maximum local file25 MB per image file
Workspace featuresReal-time canvas overlay, multi-corner placement, instant local download
Limitations and important notes
Limitations and important notes
- Watermarked text becomes permanent in exported raster files and cannot be edited later.
- Animated GIF files receive the watermark on a single static frame.
- Always keep original un-watermarked high-resolution photos as primary archives.
- Watermarking provides deterrent protection and visual attribution but does not embed invisible digital rights metadata.
Frequently asked questions
Frequently asked questions
Once an image is watermarked and downloaded, the watermark text is permanently merged into the image pixels.
An opacity level between 35% and 60% is recommended so the notice is clear without obscuring the underlying photograph.
No. Watermark rendering uses HTML5 Canvas text APIs on your local computer.
Use white text for dark photo areas and black text for light backgrounds so the attribution remains legible.
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