diff --git a/report_qweb_signer/data/defaults.xml b/report_qweb_signer/data/defaults.xml
index 9b0f92af8..959d37593 100644
--- a/report_qweb_signer/data/defaults.xml
+++ b/report_qweb_signer/data/defaults.xml
@@ -2,6 +2,10 @@
 <odoo noupdate="1">
     <record model="ir.config_parameter" id="report_qweb_signer_java_param">
         <field name="key">report_qweb_signer.java_parameters</field>
-        <field name="value">-Xms4M -Xmx4M -XX:CompressedClassSpaceSize=256m</field>
+        <field name="value">-Xms16M -Xmx16M -XX:CompressedClassSpaceSize=256m</field>
+    </record>
+    <record model="ir.config_parameter" id="report_qweb_signer_java_position_param">
+        <field name="key">report_qweb_signer.java_position_parameters</field>
+        <field name="value">-llx 400 -lly 820 -urx 600 -ury 100  -fs 8</field>
     </record>
 </odoo>
diff --git a/report_qweb_signer/demo/report_partner_demo.xml b/report_qweb_signer/demo/report_partner_demo.xml
index 84bdc71a0..dea7a775d 100644
--- a/report_qweb_signer/demo/report_partner_demo.xml
+++ b/report_qweb_signer/demo/report_partner_demo.xml
@@ -33,14 +33,16 @@ License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
             </t>
         </t>
     </template>
-    <report
-        id="partner_demo_report"
-        model="res.partner"
-        string="Test PDF certificate"
-        report_type="qweb-pdf"
-        name="report_qweb_signer.report_partner_demo"
-        file="report_qweb_signer.report_partner_demo"
-        attachment_use="True"
-        attachment="'test_' + (object.name or '').replace(' ', '_').lower() + '.pdf'"
-    />
+    <record id="partner_demo_report" model="ir.actions.report">
+        <field name="name">Test PDF certificate</field>
+        <field name="model">res.partner</field>
+        <field name="report_type">qweb-pdf</field>
+        <field name="report_name">report_qweb_signer.report_partner_demo</field>
+        <field
+            name="attachment"
+        >'test_' + (object.name or '').replace(' ', '_').lower() + '.pdf'</field>
+        <field name="attachment_use">True</field>
+        <field name="binding_model_id" ref="base.model_res_partner" />
+        <field name="binding_type">report</field>
+    </record>
 </odoo>
diff --git a/report_qweb_signer/models/ir_actions_report.py b/report_qweb_signer/models/ir_actions_report.py
index 4db4237c7..e5653990a 100644
--- a/report_qweb_signer/models/ir_actions_report.py
+++ b/report_qweb_signer/models/ir_actions_report.py
@@ -122,8 +122,13 @@ class IrActionsReport(models.Model):
         irc_param = self.env["ir.config_parameter"].sudo()
         java_bin = "java -jar"
         java_param = irc_param.get_param("report_qweb_signer.java_parameters")
-        jar = "{}/../static/jar/jPdfSign.jar".format(me)
-        return "{} {} {} {}".format(java_bin, java_param, jar, opts)
+        java_position_param = irc_param.get_param(
+            "report_qweb_signer.java_position_parameters"
+        )
+        jar = "{}/../static/jar/JSignPdf.jar".format(me)
+        return "{} {} {} {} {}".format(
+            java_bin, java_param, jar, opts, java_position_param
+        )
 
     def _get_endesive_params(self, certificate):
         date = datetime.datetime.utcnow() - datetime.timedelta(hours=12)
@@ -160,7 +165,7 @@ class IrActionsReport(models.Model):
         return pdfsigned
 
     def pdf_sign(self, pdf, certificate):
-        pdfsigned = pdf + ".signed.pdf"
+        pdfsigned = pdf[:-4] + "_signed.pdf"
         p12 = _normalize_filepath(certificate.path)
         passwd = _normalize_filepath(certificate.password_file)
         method_used = certificate.signing_method
@@ -169,7 +174,12 @@ class IrActionsReport(models.Model):
                 _("Signing report (PDF): " "Certificate or password file not found")
             )
         if method_used == "java":
-            signer_opts = '"{}" "{}" "{}" "{}"'.format(p12, pdf, pdfsigned, passwd)
+            passwd_f = open(passwd, "tr")
+            passwd = passwd_f.read().strip()
+            passwd_f.close()
+            signer_opts = ' "{}" -ksf "{}" -ksp "{}" -V -d "/tmp"'.format(
+                pdf, p12, passwd
+            )
             signer = self._signer_bin(signer_opts)
             process = subprocess.Popen(
                 signer, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True
@@ -220,7 +230,7 @@ class IrActionsReport(models.Model):
             for fname in (pdf, signed):
                 try:
                     os.unlink(fname)
-                except (OSError, IOError):
+                except OSError:
                     _logger.error("Error when trying to remove file %s", fname)
             if certificate.attachment:
                 self._attach_signed_write(res_ids, certificate, content)
diff --git a/report_qweb_signer/models/report_certificate.py b/report_qweb_signer/models/report_certificate.py
index 6159fa176..4a1e62512 100644
--- a/report_qweb_signer/models/report_certificate.py
+++ b/report_qweb_signer/models/report_certificate.py
@@ -31,6 +31,7 @@ class ReportCertificate(models.Model):
         required=True,
         comodel_name="ir.model",
         help="Model where apply this certificate",
+        ondelete="cascade",
     )
     domain = fields.Char(
         string="Domain", help="Domain for filtering if sign or not the document",
diff --git a/report_qweb_signer/readme/CONTRIBUTORS.rst b/report_qweb_signer/readme/CONTRIBUTORS.rst
index b8f0c6c7e..9b6a265ad 100644
--- a/report_qweb_signer/readme/CONTRIBUTORS.rst
+++ b/report_qweb_signer/readme/CONTRIBUTORS.rst
@@ -5,3 +5,5 @@
     * Pedro M. Baeza
     * Jairo Llopis
     * David Vidal
+* Santi Argüeso <santi@comunitea.com>
+* Omar Castiñeira <omar@comunitea.com>
diff --git a/report_qweb_signer/readme/CREDITS.rst b/report_qweb_signer/readme/CREDITS.rst
index 14593eb9d..49127c54a 100644
--- a/report_qweb_signer/readme/CREDITS.rst
+++ b/report_qweb_signer/readme/CREDITS.rst
@@ -1,9 +1,7 @@
 External utilities
 ++++++++++++++++++
 
-* iText v1.4.8: © 2000-2006, Paulo Soares, Bruno Lowagie and others - License `MPL <http://www.mozilla.org/MPL>`__ or `LGPL2 <http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html>`__ - http://sourceforge.net/projects/itext
-* jPdfSign: © 2006 Jan Peter Stotz - License `MPL <http://www.mozilla.org/MPL>`__ or `LGPL2 <http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html>`__ (inherited from iText) - http://private.sit.fraunhofer.de/~stotz/software/jpdfsign
-* Modified jPdfSign: © 2015 Antonio Espinosa - License `MPL <http://www.mozilla.org/MPL>`__ or `LGPL2 <http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html>`__ (inherited from iText) - static/src/java/JPdfSign.java
+* JSignPdf: © Josef Cacek - License `MPL <http://www.mozilla.org/MPL>`__ or `LGPL2 <http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html>`__ - http://jsignpdf.sourceforge.net/
 
 Icon
 ++++
diff --git a/report_qweb_signer/readme/ROADMAP.rst b/report_qweb_signer/readme/ROADMAP.rst
index db930cb21..f5bc87ca1 100644
--- a/report_qweb_signer/readme/ROADMAP.rst
+++ b/report_qweb_signer/readme/ROADMAP.rst
@@ -1,5 +1,4 @@
 * When signing multiple documents (if 'Allow only one document' is disable)
   then 'Save as attachment' is not applied and signed result is not
   saved as attachment.
-* To have a visible signature through an image embedded in the resulting PDF.
 * Add tests.
diff --git a/report_qweb_signer/static/jar/JSignPdf.jar b/report_qweb_signer/static/jar/JSignPdf.jar
new file mode 100644
index 000000000..27de18c27
Binary files /dev/null and b/report_qweb_signer/static/jar/JSignPdf.jar differ
diff --git a/report_qweb_signer/static/jar/itext-1.4.8.jar b/report_qweb_signer/static/jar/itext-1.4.8.jar
deleted file mode 100644
index dbbd4280c..000000000
Binary files a/report_qweb_signer/static/jar/itext-1.4.8.jar and /dev/null differ
diff --git a/report_qweb_signer/static/jar/jPdfSign.jar b/report_qweb_signer/static/jar/jPdfSign.jar
deleted file mode 100644
index 784b11fc6..000000000
Binary files a/report_qweb_signer/static/jar/jPdfSign.jar and /dev/null differ
diff --git a/requirements.txt b/requirements.txt
index 298ff2a87..66dfb2dcb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ py3o.template
 py3o.formats
 genshi>=0.7
 cryptography
+endesive