Watermark Image
Add a text watermark to an image. Upload an image, customize the text, opacity, and position, and download the result.
Click to upload an image
Your file is processed entirely in your browser
Recommended Settings
Pro Tips
- •A semi-transparent watermark (40-60% opacity) is usually visible enough to deter reuse without overwhelming the image
- •The watermark text is drawn with a subtle dark outline so it stays legible on both light and dark backgrounds
- •This adds a simple text watermark - it doesn't prevent someone from cropping or editing it out with enough effort
- •The whole file is processed locally in your browser - nothing is uploaded anywhere
Most Popular
Most users add their name or website at 50% opacity in the bottom-right corner
When to Use This Tool
Mark a photo with a visible watermark before sharing it publicly online.
Add your name, logo text, or website to images shared on social media.
Overlay text like "DRAFT" or "CONFIDENTIAL" onto an image for internal review.
Credit the original creator directly on an image before it's shared further.
How It Works
Read the uploaded image and decode it using the browser's native image support
Draw the image onto a new canvas at its original size
Render the watermark text on top at the selected position, opacity, and a size proportional to the image
Encode the canvas as PNG, ready to preview and download
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Browser native Canvas API for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
Is this watermark removable?
A text overlay like this can potentially be cropped, covered, or edited out with enough effort in image editing software. For stronger protection, consider a more prominent, harder-to-remove watermark placement.
Can I add a logo image instead of text?
This tool currently supports text watermarks only. For a logo-based watermark, you'd need an image editor that supports layering a second image on top.
Is my image uploaded to a server?
No. The entire process runs locally in your browser using the Canvas API. Your image never leaves your device.
What format is the output?
The result is downloaded as a PNG file, which preserves any transparency in the original image.
Why does the text size change between images?
The watermark font size scales proportionally to the image's width, so it stays visually consistent whether you're watermarking a small thumbnail or a large photo.