Image Watermark — Add Text Watermarks in Your Browser
Add customizable text watermarks to images using the HTML5 Canvas API. Configure text, color, opacity, and position — all locally, no uploads.
Upload Image
Watermark Controls
Frequently Asked Questions
- No. All watermarking happens entirely in your browser using the Canvas API. Your image never leaves your device.
- PNG, JPG, and WebP images are supported. Drag and drop an image or click the drop zone to browse.
- Yes. Choose from Center, Top Left, Top Right, Bottom Left, or Bottom Right.
- Yes. Once the page is loaded, the tool works offline because all logic runs client-side.
Add Text Watermarks in Your Browser is a privacy-first developer tool that overlays customizable text on images directly in the browser. Built on the HTML5 Canvas API, every edit runs locally on your device, so your images are never uploaded to a remote server and no external processing is involved. You control the watermark text, color, opacity, font family, size, and position, then download the result as a PNG. It is a fast, secure way to brand photos, assert ownership, and prepare images for publishing without exposing your files to third parties or installing desktop software.
Use Cases
Photographers and designers add subtle watermarks to portfolio images before sharing them online. Content creators stamp social media graphics with a brand name or handle to deter unauthorized reposting. Developers apply consistent labels to mockups and screenshots during a build pipeline. Agencies send client previews marked DRAFT or CONFIDENTIAL, while educators label lesson slides and handouts. Anyone who publishes visual work can claim attribution and protect intellectual property with visible text overlays, all without installing desktop software or sending files to an external service.
- Brand portfolio and social media images with a name or logo text
- Mark client previews as DRAFT, CONFIDENTIAL, or SAMPLE
- Protect creative work with visible attribution before publishing
- Label internal mockups, screenshots, and design assets consistently
- Add captions, credits, or disclaimers to educational materials
- Watermark images client-side to keep sensitive files off external servers
How-To
Open the Image Watermark tool, upload an image from your device, and configure the overlay in the controls panel. Type your watermark text, select a color and opacity, choose the font family and size, and pick a position. Preview the result on the canvas, then download the watermarked image as a PNG when you are satisfied.
- Open the Image Watermark tool in your browser.
- Upload an image using the file input or drag-and-drop area.
- Enter your watermark text in the text field.
- Choose a color, set opacity, and select font family and size.
- Select a position for the watermark overlay.
- Review the live preview on the canvas.
- Download the final image as a watermarked PNG.
Because processing happens entirely in the browser, there is no upload step, no account required, and no limit on file sensitivity. Try the Image Watermark tool to add text overlays quickly, privately, and without installing any software on your device.