Watermark Tool Free Online Tool 2026

Last updated March 22, 2026

What Does the Watermark Tool Do?

The Watermark Tool adds text or image watermarks to photos and images directly in the browser — no uploads to a server, no registration required. Configure font, size, color, opacity, and position, then download the watermarked image. Batch processing handles entire photo shoots at once.

Text Watermark Configuration

Text:       © 2024 [Your Name] | yoursite.com
Font:       Arial Bold
Size:       24px
Color:      #FFFFFF (white)
Opacity:    60%
Position:   Bottom-right corner
Padding:    20px from edges

Result: Semi-transparent white copyright text
in the bottom-right corner of every image.

Watermark Position Options

┌─────────────────────────────────────┐
│ Top-Left        Top-Center  Top-Right│
│                                     │
│                                     │
│ Middle-Left    Center    Middle-Right│
│                                     │
│                                     │
│ Bottom-Left  Bottom-Center Bot-Right │
└─────────────────────────────────────┘

Tiled (repeating across entire image):
┌─────────────────────────────────────┐
│ © [Name]    © [Name]    © [Name]    │
│    © [Name]    © [Name]    © [Name] │
│ © [Name]    © [Name]    © [Name]    │
└─────────────────────────────────────┘

Recommendation:
  Corner: easy to see, can be cropped out
  Tiled:  maximum protection against cropping

Opacity Guide

Opacity  Effect                    Use Case
-------  ------                    --------
20–30%   Very subtle, barely seen  Artistic/portfolio images
40–50%   Visible but unobtrusive   Social media sharing
60–70%   Clearly visible           Stock photo protection
80–90%   Prominent                 Proof/preview images
100%     Fully opaque              Maximum deterrence

Recommended: 50–60% for most use cases
Balances visibility with image quality

Image Watermark (Logo Overlay)

Watermark image: logo.png (transparent background)
Size:            15% of image width
Position:        Bottom-right
Opacity:         70%
Blend mode:      Normal

For dark images: use white logo version
For light images: use dark logo version
For mixed: use logo with drop shadow

HTML canvas implementation:
<canvas id="canvas"></canvas>
<script>
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

// Draw main image
const img = new Image();
img.onload = () => {
  canvas.width = img.width;
  canvas.height = img.height;
  ctx.drawImage(img, 0, 0);
  
  // Draw watermark
  const logo = new Image();
  logo.onload = () => {
    const wSize = img.width * 0.15;
    const wRatio = wSize / logo.width;
    const wH = logo.height * wRatio;
    const x = img.width - wSize - 20;
    const y = img.height - wH - 20;
    
    ctx.globalAlpha = 0.7;
    ctx.drawImage(logo, x, y, wSize, wH);
    ctx.globalAlpha = 1.0;
  };
  logo.src = 'logo.png';
};
img.src = 'photo.jpg';
</script>

Batch Watermarking

Upload folder: wedding_photos/ (247 images)

Settings:
  Text: © 2024 [Photographer Name]
  Position: Bottom-right
  Opacity: 55%
  Font: Georgia Italic, 18px
  Color: White with 1px black shadow

Processing:
  ✓ IMG_0001.jpg → IMG_0001_watermarked.jpg
  ✓ IMG_0002.jpg → IMG_0002_watermarked.jpg
  ✓ IMG_0003.jpg → IMG_0003_watermarked.jpg
  ... (247 files)
  ✓ IMG_0247.jpg → IMG_0247_watermarked.jpg

Download: wedding_photos_watermarked.zip (247 files)

Effective Watermark Placement by Subject

Portrait photos:
  Best: Lower third (below the face)
  Avoid: Over the face or eyes

Landscape photos:
  Best: Bottom-right or bottom-left corner
  Avoid: Center (obscures the main subject)

Product photos:
  Best: Bottom-center or diagonal tiled
  Avoid: Over the product itself

Architecture:
  Best: Bottom corner
  Avoid: Over key architectural details

Food photography:
  Best: Bottom-right corner
  Avoid: Over the main dish

Copyright Notice Formats

Standard copyright:
  © 2024 [Your Name]

With website:
  © 2024 [Your Name] | yoursite.com

All rights reserved:
  © 2024 [Your Name]. All Rights Reserved.

Short form (for small images):
  © [YourName]

Social media handle:
  @yourusername

URL only:
  yoursite.com

Privacy: Browser-Only Processing

All processing happens in your browser using the Canvas API.
Your images are NEVER uploaded to any server.

This means:
  ✓ Safe for unpublished client work
  ✓ Safe for personal/private photos
  ✓ No file size limits from server constraints
  ✓ Works offline after page loads
  ✓ No registration required

Common Use Cases

• Photographers watermarking portfolio images before sharing online
• Designers watermarking mockups and concepts sent to clients
• Content creators branding images for social media
• Stock photo creators protecting images before submission
• Bloggers adding attribution to images used in posts
• Businesses watermarking product preview images