diff --git a/PdfForQtLib/sources/pdfsignaturehandler.cpp b/PdfForQtLib/sources/pdfsignaturehandler.cpp
index 6a6de86..af539eb 100644
--- a/PdfForQtLib/sources/pdfsignaturehandler.cpp
+++ b/PdfForQtLib/sources/pdfsignaturehandler.cpp
@@ -32,6 +32,7 @@
 #include <QMutex>
 #include <QMutexLocker>
 #include <QDataStream>
+#include <QFileInfo>
 
 #include <array>
 
@@ -449,6 +450,16 @@ QString PDFSignatureVerificationResult::getStatusText(Status status)
     return QString();
 }
 
+const PDFClosedIntervalSet& PDFSignatureVerificationResult::getBytesCoveredBySignature() const
+{
+    return m_bytesCoveredBySignature;
+}
+
+void PDFSignatureVerificationResult::setBytesCoveredBySignature(const PDFClosedIntervalSet& bytesCoveredBySignature)
+{
+    m_bytesCoveredBySignature = bytesCoveredBySignature;
+}
+
 PDFSignature::Type PDFSignatureVerificationResult::getType() const
 {
     return m_type;
@@ -702,6 +713,8 @@ BIO* PDFPublicKeySignatureHandler::getSignedDataBuffer(pdf::PDFSignatureVerifica
         result.addSignatureNotCoveredBytesWarning(notCoveredBytes);
     }
 
+    result.setBytesCoveredBySignature(qMove(bytesCoveredBySignature));
+
     return BIO_new_mem_buf(outputBuffer.data(), outputBuffer.length());
 }
 
@@ -1933,6 +1946,7 @@ QString PDFCertificateStore::getDefaultCertificateStoreFileName() const
 
 void PDFCertificateStore::loadDefaultUserCertificates()
 {
+    createDirectoryForDefaultUserCertificatesStore();
     QString trustedCertificateStoreFileName = getDefaultCertificateStoreFileName();
     QString trustedCertificateStoreLockFileName = trustedCertificateStoreFileName + ".lock";
 
@@ -1952,6 +1966,7 @@ void PDFCertificateStore::loadDefaultUserCertificates()
 
 void PDFCertificateStore::saveDefaultUserCertificates()
 {
+    createDirectoryForDefaultUserCertificatesStore();
     QString trustedCertificateStoreFileName = getDefaultCertificateStoreFileName();
     QString trustedCertificateStoreLockFileName = trustedCertificateStoreFileName + ".lock";
 
@@ -1973,6 +1988,13 @@ void PDFCertificateStore::saveDefaultUserCertificates()
     }
 }
 
+void PDFCertificateStore::createDirectoryForDefaultUserCertificatesStore()
+{
+    QFileInfo fileInfo(getDefaultCertificateStoreFileName());
+    QString path = fileInfo.path();
+    QDir().mkpath(path);
+}
+
 }   // namespace pdf
 
 #ifdef Q_OS_WIN
diff --git a/PdfForQtLib/sources/pdfsignaturehandler.h b/PdfForQtLib/sources/pdfsignaturehandler.h
index 57fd842..47dde68 100644
--- a/PdfForQtLib/sources/pdfsignaturehandler.h
+++ b/PdfForQtLib/sources/pdfsignaturehandler.h
@@ -20,6 +20,7 @@
 
 #include "pdfglobal.h"
 #include "pdfobject.h"
+#include "pdfutils.h"
 
 #include <QString>
 #include <QDateTime>
@@ -406,6 +407,9 @@ public:
 
     static QString getStatusText(Status status);
 
+    const PDFClosedIntervalSet& getBytesCoveredBySignature() const;
+    void setBytesCoveredBySignature(const PDFClosedIntervalSet& bytesCoveredBySignature);
+
 private:
     PDFSignature::Type m_type = PDFSignature::Type::Invalid;
     VerificationFlags m_flags = None;
@@ -418,6 +422,7 @@ private:
     QStringList m_hashAlgorithms;
     QByteArray m_signatureHandler;
     PDFCertificateInfos m_certificateInfos;
+    PDFClosedIntervalSet m_bytesCoveredBySignature;
 };
 
 /// Signature handler. Can verify both certificate and signature validity.
@@ -524,6 +529,9 @@ public:
     /// Save to default user certificate storage
     void saveDefaultUserCertificates();
 
+    /// Creates default directory for certificate store
+    void createDirectoryForDefaultUserCertificatesStore();
+
 private:
     static constexpr int persist_version = 1;
 
diff --git a/PdfForQtLib/sources/pdfutils.cpp b/PdfForQtLib/sources/pdfutils.cpp
index 5dd07c1..9f7afbc 100644
--- a/PdfForQtLib/sources/pdfutils.cpp
+++ b/PdfForQtLib/sources/pdfutils.cpp
@@ -296,6 +296,18 @@ PDFInteger PDFClosedIntervalSet::getTotalLength() const
     return std::accumulate(m_intervals.cbegin(), m_intervals.cend(), 0, [](PDFInteger count, const auto& b) { return count + b.second - b.first + 1; });
 }
 
+QString PDFClosedIntervalSet::toText() const
+{
+    QStringList intervals;
+
+    for (const ClosedInterval& interval : m_intervals)
+    {
+        intervals << QString("[%1 - %2]").arg(interval.first).arg(interval.second);
+    }
+
+    return intervals.join(", ");
+}
+
 void PDFClosedIntervalSet::normalize()
 {
     // Algorithm:
diff --git a/PdfForQtLib/sources/pdfutils.h b/PdfForQtLib/sources/pdfutils.h
index 4b8c731..cf19300 100644
--- a/PdfForQtLib/sources/pdfutils.h
+++ b/PdfForQtLib/sources/pdfutils.h
@@ -583,7 +583,7 @@ private:
 };
 
 /// Set of closed intervals
-class PDFClosedIntervalSet
+class PDFFORQTLIBSHARED_EXPORT PDFClosedIntervalSet
 {
 public:
     explicit inline PDFClosedIntervalSet() = default;
@@ -611,6 +611,9 @@ public:
     /// Returns sum of interval lengths
     PDFInteger getTotalLength() const;
 
+    /// Transforms interval set to readable text
+    QString toText() const;
+
 private:
     /// Normalizes interval ranges - merges adjacent intervals
     void normalize();
diff --git a/PdfTool/pdftoolverifysignatures.cpp b/PdfTool/pdftoolverifysignatures.cpp
index 4aef4de..8b563ac 100644
--- a/PdfTool/pdftoolverifysignatures.cpp
+++ b/PdfTool/pdftoolverifysignatures.cpp
@@ -200,6 +200,32 @@ int PDFToolVerifySignaturesApplication::execute(const PDFToolOptions& options)
                 formatter.writeText("handler", PDFToolTranslationContext::tr("Handler: %1").arg(QString::fromLatin1(signature.getSignatureHandler())));
                 formatter.writeText("whole-signed", PDFToolTranslationContext::tr("Is whole document signed: %1").arg(signature.hasFlag(pdf::PDFSignatureVerificationResult::Warning_Signature_NotCoveredBytes) ? PDFToolTranslationContext::tr("No") : PDFToolTranslationContext::tr("Yes")));
 
+                // Signature range
+                const pdf::PDFClosedIntervalSet& bytesCoveredBySignature = signature.getBytesCoveredBySignature();
+                formatter.writeText("byte-range", PDFToolTranslationContext::tr("Byte range covered by signature: %1").arg(bytesCoveredBySignature.toText()));
+
+                if (signature.hasError())
+                {
+                    formatter.endl();
+                    formatter.beginHeader("errors", PDFToolTranslationContext::tr("Errors:"));
+                    for (const QString& error : signature.getErrors())
+                    {
+                        formatter.writeText("error", error);
+                    }
+                    formatter.endHeader();
+                }
+
+                if (signature.hasWarning())
+                {
+                    formatter.endl();
+                    formatter.beginHeader("warnings", PDFToolTranslationContext::tr("Warnings:"));
+                    for (const QString& warning : signature.getWarnings())
+                    {
+                        formatter.writeText("warning", warning);
+                    }
+                    formatter.endHeader();
+                }
+
                 formatter.endl();
 
                 if (!options.verificationOmitCertificateCheck)