diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index d935825..106c7cb 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -14,7 +14,7 @@ jobs:
       - name: install meson
         run: apt-get -yq install meson
       - name: Install build dependencies
-        run: apt-get -yq install libusb-1.0-0-dev libspdlog-dev libpango1.0-dev libcairo2-dev gcovr
+        run: apt-get -yq install libusb-1.0-0-dev libspdlog-dev libfmt-dev libpango1.0-dev libcairo2-dev gcovr
       - name: setup builddir
         run: meson setup builddir -Db_coverage=true
       - name: build all targets
diff --git a/README.md b/README.md
index b0bfc7c..9af98b5 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ pacman -S libusb spdlog pango cairo meson gcovr
 
 Install dependencies on Debian/Ubuntu
 ``` bash
-apt-get install libusb-1.0-0-dev libspdlog-dev libpango1.0-dev libcairo2-dev meson gcovr
+apt-get install libusb-1.0-0-dev libspdlog-dev libfmt-dev libpango1.0-dev libcairo2-dev meson gcovr
 ```
 
 ## Build
diff --git a/meson.build b/meson.build
index 84a0756..fdc0c4a 100644
--- a/meson.build
+++ b/meson.build
@@ -6,6 +6,7 @@ project('ptprnt', 'cpp',
 
 usb_dep = dependency('libusb-1.0')
 log_dep = dependency('spdlog')
+fmt_dep = dependency('fmt')
 pangocairo_dep = dependency('pangocairo')
 
 # CLI11 
@@ -23,7 +24,7 @@ ptprnt_exe = executable(
     'ptprnt', 
     'src/main.cpp',
     install: true,
-    dependencies : [usb_dep, log_dep, pangocairo_dep, cli11_dep],
+    dependencies : [usb_dep, log_dep, fmt_dep, pangocairo_dep, cli11_dep],
     include_directories: incdir,
     sources: [ptprnt_srcs],
     cpp_args : ['-DPROJ_VERSION="'+meson.project_version()+'"'],
diff --git a/src/PtouchPrint.cpp b/src/PtouchPrint.cpp
index f3528b4..60caab3 100644
--- a/src/PtouchPrint.cpp
+++ b/src/PtouchPrint.cpp
@@ -16,14 +16,25 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
  */
+#define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_TRACE
+#define SPDLOG_DEBUG_ON
+#define SPDLOG_TRACE_ON
 
 #include "PtouchPrint.hpp"
 
 #include <CLI/App.hpp>
+#include <fmt/core.h>
 #include <spdlog/common.h>
+#include <spdlog/details/synchronous_factory.h>
+#include <spdlog/logger.h>
+#include <spdlog/sinks/base_sink.h>
+#include <spdlog/sinks/basic_file_sink.h>
+#include <spdlog/sinks/stdout_color_sinks.h>
 #include <spdlog/spdlog.h>
 
 #include <functional>
+#include <memory>
+#include <vector>
 
 #include "CLI/Option.hpp"
 #include "P700Printer.hpp"
@@ -45,9 +56,9 @@ int PtouchPrint::init(int argc, char** argv) {
     }
 
     if (mVerboseFlag) {
-        setupLogger(spdlog::level::trace);
+        setupLogger(spdlog::level::debug);
     } else {
-        setupLogger(spdlog::level::critical);
+        setupLogger(spdlog::level::err);
     }
 
     if (!mUsbDeviceFactory.init()) {
@@ -59,10 +70,12 @@ int PtouchPrint::init(int argc, char** argv) {
 }
 
 int PtouchPrint::run() {
+    spdlog::debug("ptprnt version {}", mVersionString);
+    SPDLOG_TRACE("testing trace");
     auto numFoundPrinters = getCompatiblePrinters();
     if (numFoundPrinters == 0) {
         spdlog::error(
-            "No compatible printers found, please make sure if they are turned on and connected");
+            "No compatible printers found, please make sure that they are turned on and connected");
         return -1;
     } else if (numFoundPrinters > 1) {
         spdlog::warn("Found more than one compatible printer. Currently not supported.");
@@ -84,7 +97,7 @@ int PtouchPrint::run() {
     //printer->printText("wurst", 1);
 
     for (auto& cmd : mCommands) {
-        std::cout << cmd.second << std::endl;
+        spdlog::debug("Command: {}", cmd.second);
     }
 
     return 0;
@@ -113,13 +126,22 @@ unsigned int PtouchPrint::getCompatiblePrinters() {
 }
 
 void PtouchPrint::setupLogger(spdlog::level::level_enum lvl) {
-    spdlog::set_level(lvl);
-    spdlog::debug("Starting ptprnt {}", mVersionString);
+    auto consoleSink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
+    consoleSink->set_level(lvl);
+    consoleSink->set_pattern("%^%L:%$ %v");
+
+    auto fileSink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("ptprnt.log", true);
+    fileSink->set_level(spdlog::level::trace);
+    fileSink->set_pattern("%Y-%m-%d %H:%m:%S:%e [pid:%P tid:%t] [%^%l%$] %v (%@)");
+    std::vector<spdlog::sink_ptr> sinks{consoleSink, fileSink};
+    auto logger = std::make_shared<spdlog::logger>("default_logger", sinks.begin(), sinks.end());
+    logger->set_level(spdlog::level::trace);
+    spdlog::set_default_logger(logger);
 }
 
 void PtouchPrint::setupCliParser() {
     auto printVersion = [this](std::size_t) {
-        std::cout << "ptprnt version: " << mVersionString << std::endl;
+        fmt::print("ptprnt version: {}\n", mVersionString);
     };
 
     // General options
diff --git a/src/interface/IPrinterDriver.hpp b/src/interface/IPrinterDriver.hpp
index 0a0ccda..e90dec1 100644
--- a/src/interface/IPrinterDriver.hpp
+++ b/src/interface/IPrinterDriver.hpp
@@ -30,6 +30,7 @@ namespace ptprnt {
 
 class IPrinterDriver {
    public:
+    virtual ~IPrinterDriver()                                                     = default;
     virtual const std::string_view getDriverName()                                = 0;
     virtual const std::string_view getName()                                      = 0;
     virtual const std::string_view getVersion()                                   = 0;
diff --git a/src/libusbwrap/UsbDevice.hpp b/src/libusbwrap/UsbDevice.hpp
index c713e45..7e32ebc 100644
--- a/src/libusbwrap/UsbDevice.hpp
+++ b/src/libusbwrap/UsbDevice.hpp
@@ -29,8 +29,8 @@
 namespace libusbwrap {
 class UsbDevice : public IUsbDevice {
    public:
-    UsbDevice(libusb_context* ctx, libusb_device* dev);
-    ~UsbDevice();
+    explicit UsbDevice(libusb_context* ctx, libusb_device* dev);
+    ~UsbDevice() override;
 
     // delete copy ctor and assignment
     UsbDevice(const UsbDevice&)      = delete;
diff --git a/src/libusbwrap/interface/IUsbDevice.hpp b/src/libusbwrap/interface/IUsbDevice.hpp
index 9fec3f1..5025c59 100644
--- a/src/libusbwrap/interface/IUsbDevice.hpp
+++ b/src/libusbwrap/interface/IUsbDevice.hpp
@@ -24,8 +24,9 @@ enum class Speed {
 
 class IUsbDevice {
    public:
-    virtual bool open()  = 0;
-    virtual void close() = 0;
+    virtual ~IUsbDevice() = default;
+    virtual bool open()   = 0;
+    virtual void close()  = 0;
 
     // libusb wrappers
     virtual bool detachKernelDriver(int interfaceNo) = 0;
diff --git a/src/libusbwrap/interface/IUsbDeviceFactory.hpp b/src/libusbwrap/interface/IUsbDeviceFactory.hpp
index 5e11ee6..a31cdc7 100644
--- a/src/libusbwrap/interface/IUsbDeviceFactory.hpp
+++ b/src/libusbwrap/interface/IUsbDeviceFactory.hpp
@@ -9,7 +9,8 @@
 namespace libusbwrap {
 class IUsbDeviceFactory {
    public:
-    virtual std::vector<std::shared_ptr<IUsbDevice>> findAllDevices()                        = 0;
+    virtual ~IUsbDeviceFactory()                                      = default;
+    virtual std::vector<std::shared_ptr<IUsbDevice>> findAllDevices() = 0;
     virtual std::vector<std::shared_ptr<IUsbDevice>> findDevices(uint16_t vid, uint16_t pid) = 0;
 };
 }  // namespace libusbwrap
\ No newline at end of file