How do I add a logo or text watermark to my photos?

Upload your photo, type watermark text or upload a PNG logo, set opacity, position (corners, center, or tiled repeating), and download your protected image.

Can I tile a repeating watermark across the entire photo?

Yes. Enable 'Tiled Repeating' mode to protect your entire image against unauthorized scraping and screenshotting.

NexLove Media

Image Watermark Tool — Add Logo & Text Watermarks

TL;DR: Image Watermark Tool — Add Logo & Text Watermarks is a 100% free browser-based media utility. Protect your photos with customizable text or brand logo watermarks, 9-point anchor grid, rotation, and tiled patterns.

Select Photo to Watermark

Add custom text, brand logos, or repeating security tiles

1. Watermark Content

Watermark Text

Font Family

Font Size (36px)

Text Color

Outline Stroke

Stroke Width: 2px

2. Placement & Styling

9-Point Anchor Grid

Full Security Tile Pattern (Anti-Theft)

Opacity: 60%

Rotation: 0°

Edge Margin: 30px

Blend Mode

Live Watermarked Preview

0 × 0 px

Export Format:

Download Watermarked Image

Understanding Image Watermark Tool — Add Logo & Text Watermarks

Watermark photos and graphics with custom copyright text, brand logos, or repeating anti-theft tile patterns. Adjust opacity, 9-point anchor grid, rotation, stroke outlines, and export in lossless PNG or JPG. Designed for creators, video editors, audio engineers, web designers, and developers who need instant, high-precision processing without software installation, watermarks, or file uploads.

Mathematical Formula & Technical Methodology

C_{\text{out}} = (1 - \alpha) C_{\text{image}} + \alpha \cdot \text{Blend}(C_{\text{watermark}}, C_{\text{image}})

Formula Variables Explained:
Alpha-composites text, logo bitmaps, or geometric tile matrices onto the base canvas buffer with blend mode support.

Step-by-Step Worked Example

Overlaying '@StudioNex' with 9-point bottom-right anchor at 45% opacity and 2px black outline produces clean, tamper-resistant attribution.

100% Client-Side Privacy Guarantee

All media decoding, manipulation, calculations, and encoding execute locally inside your web browser using HTML5 Canvas, Web Audio API, WebCodecs, Web Crypto, and modern JavaScript engines. Zero server uploads, zero telemetry, and no registration required.

Frequently Asked Questions

: Upload your photo, type watermark text or upload a PNG logo, set opacity, position (corners, center, or tiled repeating), and download your protected image.
: Yes. Enable 'Tiled Repeating' mode to protect your entire image against unauthorized scraping and screenshotting.

Embed This Tool

Add the live Image Watermark Tool — Add Logo & Text Watermarks to your own website with this embed code:

<iframe src="https://nexlove.org/embed/image-watermark-tool.html" width="100%" height="650" style="border:1px solid #e2e8f0;border-radius:12px" title="Image Watermark Tool — Add Logo & Text Watermarks — NexLove" loading="lazy"></iframe>

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