Best Free Photo Watermark Tool Online (2026) | Protect Images & Copyright

🛡️ Watermark • Integrity Hash • Authorship Certificate

Photo Protector for Copyright Proof (2026)

Protect your photos with a visible watermark and a locally generated SHA-256 integrity hash. No uploads to external servers.

📤 Upload Your Photo

📷

Click or drag your photo here

Formats: JPG, PNG, GIF, WebP • Max size: 10MB

👤 Author / Photo Owner Name 📧 Author Email (optional) 📝 Copyright / Rights Statement

📅 Creation Date

🔗 Original Page URL (optional)

💧 Watermark Text

🎨 Watermark Color

🌫️ Opacity (%)

🔗 Sharing Mode (for your embed snippet) ❌ No — discourage downloads (basic restrictions) ✅ Yes — watermark required ✅ Yes — with author attribution (metadata in snippet)

🔒 What this tool actually does

• ✅ Applies a visible diagonal watermark to your photo
• ✅ Generates a SHA-256 integrity hash (based on the protected PNG + settings)
• ✅ Creates a downloadable authorship certificate (text file)
• ✅ Generates an “Embed HTML” snippet with basic restrictions
• ✅ Works fully in your browser (no server uploads)
• ⚠️ Limitations: no browser tool can guarantee “no copying” (screenshots are always possible)

👁️ Protected Photo Preview

Your protected photo preview will appear here after protection.

📦 Integrity Metadata & Embed

This metadata is generated after protection (locally in your browser).

{"status":"waiting","integrityHash":null}

Paste this snippet wherever the protected image appears. It adds basic UI restrictions + provenance data attributes.

<!-- Paste your protected image URL here -->
<img src="YOUR_PROTECTED_IMAGE_URL.png" alt="Protected Photo"
  data-integrity="sha256:YOUR_HASH"
  data-author="YOUR_NAME"
  data-copyright="YOUR_COPYRIGHT"
  data-original-url="YOUR_ORIGINAL_PAGE_URL">

<script>
(function(){
  var img = document.querySelector('img[data-integrity]');
  if(!img) return;

  img.addEventListener('contextmenu', function(e){ e.preventDefault(); });
  img.addEventListener('dragstart', function(e){ e.preventDefault(); });
  img.addEventListener('copy', function(e){ e.preventDefault(); });
})();
</script>

❓ Frequently Asked Questions

Does this tool embed EXIF metadata?

No. Your protected image is generated via a canvas watermark + integrity hashing. EXIF editing is not performed in this browser-only version.

Is my image uploaded to a server?

No. Everything is processed locally in your browser. Only your downloads (PNG + certificate) leave the browser.

Can someone remove the watermark?

Any visible watermark can be removed or altered by determined people. This tool is designed to discourage copying and provide a verifiable integrity hash for provenance.

What is the integrity hash used for?

It’s a SHA-256 fingerprint for your protected PNG and settings. If your image is reused, you can compare hashes to support claims of authorship/provenance.

⚖️ This tool provides technical assistance for watermarking and provenance hashing. For legal actions, consult a qualified professional.

🛡️ Photo Protector © 2026 • Built for browser-only protection & provenance

No external uploads • Integrity hash generated locally

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