Your Users Create Content with AI. We Strip the Watermarks Before Publishing.
Bulk watermark removal API for platforms. Process 1000s of posts/hour. Preserve formatting, remove tracking.
const response = await fetch(
"https://api.gptwatermarkremover.com/v1/clean",
{
method: "POST",
headers: {
"X-API-Key": "YOUR_API_KEY",
"Content-Type": "application/json"
},
body: JSON.stringify({ text: "Your AI-generated text here" })
}
);
const { cleaned_text } = await response.json();The Platform Risk
Users generate content with AI tools. Watermarks stay in published posts. Your platform's reputation suffers.
1. Users Create with AI
Your users write posts, articles, comments using ChatGPT, Claude, Jasper.
2. Watermarks Get Published
AI tools embed invisible tracking. Users publish to your platform. Watermarks stay in.
3. Platform Gets Flagged
Detectors scan your platform. High AI content percentage. Reputation damaged. SEO hit.
The Fix: Bulk Watermark Removal in Publishing Pipeline
Process 50 posts per API call. Strip watermarks before content goes live. Users can use AI tools freely, your platform stays protected.
// Fetch pending posts from your platform
const posts = await db.posts.findMany({
where: { status: 'pending' },
take: 50
});
const texts = posts.map(p => p.content);
// Bulk clean all posts in one API call
const response = await fetch(
'https://api.gpt-watermark-remover.com/v1/bulk',
{
method: 'POST',
headers: { 'X-API-Key': 'your_api_key' },
body: JSON.stringify({ texts })
}
);
const { cleaned_texts } = await response.json();
// Update all posts with watermark-free versions
await Promise.all(
posts.map((post, i) =>
db.posts.update({
where: { id: post.id },
data: {
content: cleaned_texts[i],
status: 'published'
}
})
)
);Publishing Pipeline Integration
Add watermark removal to your moderation workflow
User submits content → enters moderation queue
Moderator reviews and approves content
Strip watermarks via bulk API
Process 50 approved posts at once, < 1 sec total
Publish clean content to platform → no watermarks
Bulk Processing (/v1/bulk)
For platforms processing multiple posts at once:
- 50 texts per API call
- 50x fewer API calls needed
- Lower cost (counts as 1 request for rate limit)
- Perfect for batch jobs, migrations, moderation queues
Webhook Support (Async)
For async workflows and distributed systems:
- POST with webhook_url, get immediate 202 response
- We callback with cleaned texts when done (<1 sec)
- No blocking—continue processing immediately
- HMAC signature for webhook security
Simple Pricing
API access included with every premium subscription
Premium Subscription
Everything you need to get started
- 1,000 API calls per month
- 100,000 characters per request
- All web features included
- Instant API key generation
Developer Tiers
Higher volume plans for production apps
- Higher volume tiers
- Team and organization plans
- Custom enterprise solutions
Watermark Types We Detect
Our API detects and removes all known invisible Unicode characters used by AI systems like ChatGPT, Claude, Gemini, and others to watermark generated text.
Zero-Width Characters
Invisible characters with no visual width, commonly inserted by AI systems to mark generated text.
Formatting Characters
Characters that affect text rendering or spacing without being visible.
Bidirectional Control
Characters that control text direction, often invisible and exploitable for watermarking.
Variation Selectors
Characters that modify how preceding characters render, often invisibly.
Annotation Characters
Characters for interlinear annotations, invisible in most contexts.
Why Do AI Systems Add Watermarks?
Large language models like ChatGPT, Claude, and Gemini embed invisible watermarks to enable detection of AI-generated content. These watermarks use Unicode characters that have zero visual width but can be detected programmatically. Our API removes all known watermark patterns while preserving your text's meaning and formatting.
Platform Integration FAQ
Technical questions about bulk watermark removal
Let Users Create with AI. We'll Handle the Watermarks.
Bulk API processes 1000s of posts per hour. Webhook integration. Preserve formatting. Zero downtime. Your users create freely, we clean invisibly.
Bulk API included • Process 50 posts per call • Enterprise scaling available