diff --git a/abogen/webui/routes/jobs.py b/abogen/webui/routes/jobs.py
index 86d6ac8..545db76 100644
--- a/abogen/webui/routes/jobs.py
+++ b/abogen/webui/routes/jobs.py
@@ -32,10 +32,11 @@ logger = logging.getLogger(__name__)
 jobs_bp = Blueprint("jobs", __name__)
 
 @jobs_bp.get("/<job_id>")
-def job_detail(job_id: str) -> str:
+def job_detail(job_id: str) -> ResponseReturnValue:
     job = get_service().get_job(job_id)
     if not job:
-        abort(404)
+        # Return a friendly page instead of 404 to avoid confusion from stale browser tabs
+        return render_template("job_not_found.html"), 200
     return render_template(
         "job_detail.html",
         job=job,
@@ -246,10 +247,11 @@ def download_file(job_id: str, file_type: str) -> ResponseReturnValue:
     abort(404)
 
 @jobs_bp.get("/<job_id>/logs")
-def job_logs(job_id: str) -> str:
+def job_logs(job_id: str) -> ResponseReturnValue:
     job = get_service().get_job(job_id)
     if not job:
-        abort(404)
+        # Return a simple page instead of 404 to avoid log spam from stale browser tabs
+        return render_template("job_logs_missing.html"), 200
     return render_template("job_logs_static.html", job=job)
 
 
diff --git a/abogen/webui/templates/job_logs_missing.html b/abogen/webui/templates/job_logs_missing.html
new file mode 100644
index 0000000..ad21254
--- /dev/null
+++ b/abogen/webui/templates/job_logs_missing.html
@@ -0,0 +1,13 @@
+{% extends "base.html" %}
+
+{% block title %}Job Not Found{% endblock %}
+
+{% block content %}
+<section class="card logs-static">
+  <div class="card__title-row">
+    <div class="card__title">Job Not Found</div>
+  </div>
+  <p>This job no longer exists. It may have been deleted or the server was restarted.</p>
+  <p><a href="{{ url_for('main.index') }}" class="button button--primary">Return to Dashboard</a></p>
+</section>
+{% endblock %}
diff --git a/abogen/webui/templates/job_not_found.html b/abogen/webui/templates/job_not_found.html
new file mode 100644
index 0000000..2c4afb6
--- /dev/null
+++ b/abogen/webui/templates/job_not_found.html
@@ -0,0 +1,13 @@
+{% extends "base.html" %}
+
+{% block title %}Job Not Found{% endblock %}
+
+{% block content %}
+<section class="card">
+  <div class="card__title-row">
+    <div class="card__title">Job Not Found</div>
+  </div>
+  <p>This job no longer exists. It may have been deleted or the server was restarted.</p>
+  <p><a href="{{ url_for('main.index') }}" class="button button--primary">Return to Dashboard</a></p>
+</section>
+{% endblock %}