Image Watermark Tool Online Free — Add Text or Logo Watermark
Protect your photos by adding a customizable text or logo watermark directly in your browser. Choose from 9 positions, adjust opacity and font size, enable tiling, and download as PNG or JPG — no upload, no signup, completely private.
How to Add a Watermark to an Image
- 01
Upload your image
Drag and drop or click to select a JPG, PNG, WebP, or other image file. A preview appears immediately.
- 02
Customize your watermark
Switch between text and logo modes. Set position, opacity, font size, color, and rotation. Changes preview in real time.
- 03
Download
Choose PNG or JPG output format and quality, then click Download to save the watermarked image locally.
Frequently Asked Questions
What is an image watermark?
A watermark is a text label or semi-transparent logo overlaid on an image to identify the creator, protect copyright, or prevent unauthorized use. Photographers, designers, and content creators commonly watermark images before sharing them online.
Does this tool upload my photos to a server?
No. All watermarking is done entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to any server. Processing is instant and completely private.
What image formats are supported?
You can upload JPG, PNG, WebP, GIF, and most common image formats. The download is available in PNG (lossless, with transparency) or JPG (smaller file size). PNG is recommended when preserving transparency.
Can I tile the watermark across the whole image?
Yes. Enable the "Tile watermark" option to repeat the text watermark at a diagonal angle across the entire image. This is commonly used for document watermarking or to prevent cropping out a single watermark.
What does the opacity setting do?
Opacity controls how transparent the watermark appears — 0% is fully invisible, 100% is fully opaque. A common setting for subtle copyright notices is 20–40%. Higher opacity (60–80%) is more visible but less aesthetically pleasing.
Can I add a logo as a watermark?
Yes. Switch to the "Logo" tab, upload a logo image (PNG with transparent background works best), choose one of 9 positions, adjust the logo size as a percentage of the image width, and set the opacity. The original logo is composited onto your photo without any quality loss.