AI Watermark & Stego Scanner (Text + Code)

Low-false-positive detection for verifiable patterns: Unicode invisibles/Bidi, confusables, normalization tricks,
whitespace channels, encoded payloads, URL tracking tokens, acrostics, and repetition/uniformity heuristics.
Optional PHP API improves Unicode/confusable checks (ICU).

More informationen in the github repo

Input

</p> <p> <button class="primary" id="run" disabled="disabled">Run analysis</button><br /> <button id="runAll">Enable all checks</button><br /> <button id="clearSel">Clear selection</button><br /> <button class="danger right" id="clearText">Clear text</button> </p> <p> This scanner focuses on output patterns. Statistical “greenlist” watermarks typically require secret keys or model-side telemetry<br /> and cannot be reliably detected from text alone. </p> <h2>Test cases</h2> </p></div> <div class="card"> <h2>Results</h2> <div class="kvs small"> <p>Last run</p> <p>–</p> <p>Input type</p> <p>–</p> <p>Tokens (heuristic)</p> <p>–</p> <p>API used</p> <p>–</p> </p></div> </p></div> </p></div> </div> <p></body> </div> <p><br /> <br /><a href="https://ulrischa.github.io/AIWatermarkDetector/">Source link </a></p> </div> <footer class="entry-footer"> <span class="byline"><img alt='' src='https://secure.gravatar.com/avatar/261df62d6d73e3e035881ba16cc947e4a91a830d50a8b11744d4ba570bf543bc?s=49&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/261df62d6d73e3e035881ba16cc947e4a91a830d50a8b11744d4ba570bf543bc?s=98&d=mm&r=g 2x' class='avatar avatar-49 photo' height='49' width='49' decoding='async'/><span class="screen-reader-text">Author </span><span class="author vcard"><a class="url fn n" href="https://polygon.uploadbackup.com/index.php/author/polygon/">Polygon</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://polygon.uploadbackup.com/index.php/2026/02/07/ai-watermark-stego-scanner-text-code/" rel="bookmark"><time class="entry-date published updated" datetime="2026-02-07T18:27:32+00:00">7 February 2026</time></a></span> </footer> </article> <div id="comments" class="comments-area"> <div id="respond" class="comment-respond"> <h2 id="reply-title" class="comment-reply-title">Leave a Reply <small><a rel="nofollow" id="cancel-comment-reply-link" href="/index.php/2026/02/07/ai-watermark-stego-scanner-text-code/#respond" style="display:none;">Cancel reply</a></small></h2><form action="https://polygon.uploadbackup.com/wp-comments-post.php" method="post" id="commentform" class="comment-form"><p class="comment-notes"><span id="email-notes">Your email address will not be published.</span> <span class="required-field-message">Required fields are marked <span class="required">*</span></span></p><p class="comment-form-comment"><label for="comment">Comment <span class="required">*</span></label> <textarea id="comment" name="comment" cols="45" rows="8" maxlength="65525" required>

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