diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index d13e79f..1880a54 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -10,6 +10,7 @@ add_library(common STATIC
   logging/log.cpp
   logging/log.h
   misc.cpp
+  progress_callback.h
   scope_exit.h
   string_util.cpp
   string_util.h
diff --git a/src/common/progress_callback.h b/src/common/progress_callback.h
new file mode 100644
index 0000000..67026e4
--- /dev/null
+++ b/src/common/progress_callback.h
@@ -0,0 +1,14 @@
+// Copyright 2021 threeSD Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <functional>
+
+namespace Common {
+
+// (current_size, total_size)
+using ProgressCallback = std::function<void(std::size_t, std::size_t)>;
+
+} // namespace Common
diff --git a/src/core/decryptor.cpp b/src/core/decryptor.cpp
index 0ae746d..6c8781f 100644
--- a/src/core/decryptor.cpp
+++ b/src/core/decryptor.cpp
@@ -53,7 +53,7 @@ void SDMCDecryptor::Reset(std::size_t total_size) {
 }
 
 bool SDMCDecryptor::DecryptAndWriteFile(const std::string& source, const std::string& destination,
-                                        const ProgressCallback& callback) {
+                                        const Common::ProgressCallback& callback) {
     if (!FileUtil::CreateFullPath(destination)) {
         LOG_ERROR(Core, "Could not create path {}", destination);
         return false;
diff --git a/src/core/decryptor.h b/src/core/decryptor.h
index a9a0286..807cf66 100644
--- a/src/core/decryptor.h
+++ b/src/core/decryptor.h
@@ -33,7 +33,7 @@ public:
      */
     bool DecryptAndWriteFile(
         const std::string& source, const std::string& destination,
-        const ProgressCallback& callback = [](std::size_t, std::size_t) {});
+        const Common::ProgressCallback& callback = [](std::size_t, std::size_t) {});
 
     void Abort();
 
diff --git a/src/core/importer.cpp b/src/core/importer.cpp
index 5a685f3..b58f7ef 100644
--- a/src/core/importer.cpp
+++ b/src/core/importer.cpp
@@ -69,7 +69,7 @@ void SDMCImporter::AbortImporting() {
 }
 
 bool SDMCImporter::ImportContent(const ContentSpecifier& specifier,
-                                 const ProgressCallback& callback) {
+                                 const Common::ProgressCallback& callback) {
     switch (specifier.type) {
     case ContentType::Application:
     case ContentType::Update:
@@ -130,7 +130,7 @@ bool ImportTitleGeneric(Dec& decryptor, const std::string& base_path,
 } // namespace
 
 bool SDMCImporter::ImportTitle(const ContentSpecifier& specifier,
-                               const ProgressCallback& callback) {
+                               const Common::ProgressCallback& callback) {
     return ImportTitleGeneric(
         *decryptor, config.sdmc_path, specifier, [this, &callback](const std::string& filepath) {
             return decryptor->DecryptAndWriteFile(
@@ -144,7 +144,7 @@ bool SDMCImporter::ImportTitle(const ContentSpecifier& specifier,
 }
 
 bool SDMCImporter::ImportNandTitle(const ContentSpecifier& specifier,
-                                   const ProgressCallback& callback) {
+                                   const Common::ProgressCallback& callback) {
 
     const auto base_path =
         config.system_titles_path.substr(0, config.system_titles_path.size() - 6);
@@ -167,7 +167,8 @@ bool SDMCImporter::ImportNandTitle(const ContentSpecifier& specifier,
         });
 }
 
-bool SDMCImporter::ImportSavegame(u64 id, [[maybe_unused]] const ProgressCallback& callback) {
+bool SDMCImporter::ImportSavegame(u64 id,
+                                  [[maybe_unused]] const Common::ProgressCallback& callback) {
     const auto path = fmt::format("title/{:08x}/{:08x}/data/", (id >> 32), (id & 0xFFFFFFFF));
 
     DataContainer container(decryptor->DecryptFile(fmt::format("/{}00000001.sav", path)));
@@ -190,7 +191,8 @@ bool SDMCImporter::ImportSavegame(u64 id, [[maybe_unused]] const ProgressCallbac
         "Nintendo 3DS/00000000000000000000000000000000/00000000000000000000000000000000/" + path);
 }
 
-bool SDMCImporter::ImportNandSavegame(u64 id, [[maybe_unused]] const ProgressCallback& callback) {
+bool SDMCImporter::ImportNandSavegame(u64 id,
+                                      [[maybe_unused]] const Common::ProgressCallback& callback) {
     const auto path = fmt::format("sysdata/{:08x}/00000000", (id & 0xFFFFFFFF));
 
     FileUtil::IOFile file(config.nand_data_path + path, "rb");
@@ -216,7 +218,8 @@ bool SDMCImporter::ImportNandSavegame(u64 id, [[maybe_unused]] const ProgressCal
                                  1);
 }
 
-bool SDMCImporter::ImportExtdata(u64 id, [[maybe_unused]] const ProgressCallback& callback) {
+bool SDMCImporter::ImportExtdata(u64 id,
+                                 [[maybe_unused]] const Common::ProgressCallback& callback) {
     const auto path = fmt::format("extdata/{:08x}/{:08x}/", (id >> 32), (id & 0xFFFFFFFF));
     SDExtdata extdata("/" + path, *decryptor);
     if (!extdata.IsGood()) {
@@ -228,7 +231,8 @@ bool SDMCImporter::ImportExtdata(u64 id, [[maybe_unused]] const ProgressCallback
         "Nintendo 3DS/00000000000000000000000000000000/00000000000000000000000000000000/" + path);
 }
 
-bool SDMCImporter::ImportNandExtdata(u64 id, [[maybe_unused]] const ProgressCallback& callback) {
+bool SDMCImporter::ImportNandExtdata(u64 id,
+                                     [[maybe_unused]] const Common::ProgressCallback& callback) {
     const auto path = fmt::format("extdata/{:08x}/{:08x}/", (id >> 32), (id & 0xFFFFFFFF));
     SDExtdata extdata(config.nand_data_path + path);
     if (!extdata.IsGood()) {
@@ -239,7 +243,8 @@ bool SDMCImporter::ImportNandExtdata(u64 id, [[maybe_unused]] const ProgressCall
                            "data/00000000000000000000000000000000/" + path);
 }
 
-bool SDMCImporter::ImportSystemArchive(u64 id, [[maybe_unused]] const ProgressCallback& callback) {
+bool SDMCImporter::ImportSystemArchive(u64 id,
+                                       [[maybe_unused]] const Common::ProgressCallback& callback) {
     const auto path = fmt::format("{}{:08x}/{:08x}.app", config.system_archives_path, (id >> 32),
                                   (id & 0xFFFFFFFF));
     FileUtil::IOFile file(path, "rb");
@@ -273,7 +278,8 @@ bool SDMCImporter::ImportSystemArchive(u64 id, [[maybe_unused]] const ProgressCa
     return true;
 }
 
-bool SDMCImporter::ImportSysdata(u64 id, [[maybe_unused]] const ProgressCallback& callback) {
+bool SDMCImporter::ImportSysdata(u64 id,
+                                 [[maybe_unused]] const Common::ProgressCallback& callback) {
     switch (id) {
     case 0: { // boot9.bin
         const auto target_path = FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir) + BOOTROM9;
@@ -500,7 +506,7 @@ TitleData LoadTitleData(NCCHContainer& ncch) {
 }
 
 bool SDMCImporter::DumpCXI(const ContentSpecifier& specifier, const std::string& destination,
-                           const ProgressCallback& callback) {
+                           const Common::ProgressCallback& callback) {
 
     if (specifier.type != ContentType::Application) {
         LOG_ERROR(Core, "Unsupported specifier type {}", static_cast<int>(specifier.type));
@@ -534,7 +540,7 @@ void SDMCImporter::AbortDumpCXI() {
 }
 
 bool SDMCImporter::BuildCIA(const ContentSpecifier& specifier, const std::string& destination,
-                            const ProgressCallback& callback) {
+                            const Common::ProgressCallback& callback) {
 
     if (config.certs_db_path.empty()) {
         LOG_ERROR(Core, "Missing certs.db");
diff --git a/src/core/importer.h b/src/core/importer.h
index 9026809..e2f3db2 100644
--- a/src/core/importer.h
+++ b/src/core/importer.h
@@ -9,6 +9,7 @@
 #include <string>
 #include <vector>
 #include "common/common_types.h"
+#include "common/progress_callback.h"
 
 namespace Core {
 
@@ -96,9 +97,6 @@ class NCCHContainer;
 
 class SDMCImporter {
 public:
-    /// (current_size, total_size)
-    using ProgressCallback = std::function<void(std::size_t, std::size_t)>;
-
     /**
      * Initializes the importer.
      * @param root_folder Path to the "Nintendo 3DS/<ID0>/<ID1>" folder.
@@ -114,7 +112,7 @@ public:
      */
     bool ImportContent(
         const ContentSpecifier& specifier,
-        const ProgressCallback& callback = [](std::size_t, std::size_t) {});
+        const Common::ProgressCallback& callback = [](std::size_t, std::size_t) {});
 
     /**
      * Aborts current importing.
@@ -128,7 +126,7 @@ public:
      */
     bool DumpCXI(
         const ContentSpecifier& specifier, const std::string& destination,
-        const ProgressCallback& callback = [](std::size_t, std::size_t) {});
+        const Common::ProgressCallback& callback = [](std::size_t, std::size_t) {});
 
     /**
      * Aborts current CXI dumping.
@@ -142,7 +140,7 @@ public:
      */
     bool BuildCIA(
         const ContentSpecifier& specifier, const std::string& destination,
-        const ProgressCallback& callback = [](std::size_t, std::size_t) {});
+        const Common::ProgressCallback& callback = [](std::size_t, std::size_t) {});
 
     /**
      * Aborts current CIA building
@@ -168,14 +166,15 @@ public:
 private:
     bool Init();
 
-    bool ImportTitle(const ContentSpecifier& specifier, const ProgressCallback& callback);
-    bool ImportNandTitle(const ContentSpecifier& specifier, const ProgressCallback& callback);
-    bool ImportSavegame(u64 id, const ProgressCallback& callback);
-    bool ImportNandSavegame(u64 id, const ProgressCallback& callback);
-    bool ImportExtdata(u64 id, const ProgressCallback& callback);
-    bool ImportNandExtdata(u64 id, const ProgressCallback& callback);
-    bool ImportSystemArchive(u64 id, const ProgressCallback& callback);
-    bool ImportSysdata(u64 id, const ProgressCallback& callback);
+    bool ImportTitle(const ContentSpecifier& specifier, const Common::ProgressCallback& callback);
+    bool ImportNandTitle(const ContentSpecifier& specifier,
+                         const Common::ProgressCallback& callback);
+    bool ImportSavegame(u64 id, const Common::ProgressCallback& callback);
+    bool ImportNandSavegame(u64 id, const Common::ProgressCallback& callback);
+    bool ImportExtdata(u64 id, const Common::ProgressCallback& callback);
+    bool ImportNandExtdata(u64 id, const Common::ProgressCallback& callback);
+    bool ImportSystemArchive(u64 id, const Common::ProgressCallback& callback);
+    bool ImportSysdata(u64 id, const Common::ProgressCallback& callback);
 
     void ListTitle(std::vector<ContentSpecifier>& out) const;
     void ListNandTitle(std::vector<ContentSpecifier>& out) const;
diff --git a/src/core/ncch/cia_builder.cpp b/src/core/ncch/cia_builder.cpp
index 4001471..98f4860 100644
--- a/src/core/ncch/cia_builder.cpp
+++ b/src/core/ncch/cia_builder.cpp
@@ -45,7 +45,7 @@ CIABuilder::~CIABuilder() = default;
 
 bool CIABuilder::Init(const std::string& destination, TitleMetadata tmd_,
                       const std::string& certs_db_path, std::size_t total_size_,
-                      const ProgressCallback& callback_) {
+                      const Common::ProgressCallback& callback_) {
 
     header = {};
     meta = {};
diff --git a/src/core/ncch/cia_builder.h b/src/core/ncch/cia_builder.h
index cab742f..923ee97 100644
--- a/src/core/ncch/cia_builder.h
+++ b/src/core/ncch/cia_builder.h
@@ -8,6 +8,7 @@
 #include <mutex>
 #include <string>
 #include "common/file_util.h"
+#include "common/progress_callback.h"
 #include "common/swap.h"
 #include "core/ncch/ncch_container.h"
 #include "core/ncch/title_metadata.h"
@@ -33,7 +34,7 @@ public:
      * @return true on success, false otherwise
      */
     bool Init(const std::string& destination, TitleMetadata tmd, const std::string& certs_db_path,
-              std::size_t total_size, const ProgressCallback& callback);
+              std::size_t total_size, const Common::ProgressCallback& callback);
 
     /**
      * Adds an NCCH content to the CIA.
@@ -103,7 +104,7 @@ private:
     std::shared_ptr<HashedFile> file;
     std::size_t written{}; // size written (with alignment)
     std::size_t total_size{};
-    ProgressCallback callback;
+    Common::ProgressCallback callback;
 
     // The NCCH to abort on
     std::mutex abort_ncch_mutex;
diff --git a/src/core/ncch/ncch_container.cpp b/src/core/ncch/ncch_container.cpp
index 322568e..9773151 100644
--- a/src/core/ncch/ncch_container.cpp
+++ b/src/core/ncch/ncch_container.cpp
@@ -423,7 +423,7 @@ ResultStatus NCCHContainer::ReadSeedCrypto(bool& used) {
 }
 
 ResultStatus NCCHContainer::DecryptToFile(std::shared_ptr<FileUtil::IOFile> dest_file,
-                                          const ProgressCallback& callback) {
+                                          const Common::ProgressCallback& callback) {
     ResultStatus result = Load();
     if (result != ResultStatus::Success)
         return result;
diff --git a/src/core/ncch/ncch_container.h b/src/core/ncch/ncch_container.h
index 851fc11..b145c0a 100644
--- a/src/core/ncch/ncch_container.h
+++ b/src/core/ncch/ncch_container.h
@@ -11,6 +11,7 @@
 #include "common/bit_field.h"
 #include "common/common_types.h"
 #include "common/file_util.h"
+#include "common/progress_callback.h"
 #include "common/swap.h"
 #include "core/decryptor.h"
 #include "core/result_status.h"
@@ -274,7 +275,7 @@ public:
      */
     ResultStatus DecryptToFile(
         std::shared_ptr<FileUtil::IOFile> dest_file,
-        const ProgressCallback& callback = [](std::size_t, std::size_t) {});
+        const Common::ProgressCallback& callback = [](std::size_t, std::size_t) {});
 
     /**
      * Aborts DecryptToFile. Simply aborts the decryptor.
diff --git a/src/core/quick_decryptor.cpp b/src/core/quick_decryptor.cpp
index 758b015..4683fed 100644
--- a/src/core/quick_decryptor.cpp
+++ b/src/core/quick_decryptor.cpp
@@ -23,7 +23,7 @@ QuickDecryptor::~QuickDecryptor() = default;
 bool QuickDecryptor::DecryptAndWriteFile(std::shared_ptr<FileUtil::IOFile> source_,
                                          std::size_t size,
                                          std::shared_ptr<FileUtil::IOFile> destination_,
-                                         const ProgressCallback& callback_, bool decrypt_,
+                                         const Common::ProgressCallback& callback_, bool decrypt_,
                                          Core::Key::AESKey key_, Core::Key::AESKey ctr_,
                                          std::size_t aes_seek_pos_) {
     if (is_running) {
diff --git a/src/core/quick_decryptor.h b/src/core/quick_decryptor.h
index 125be6d..009bae0 100644
--- a/src/core/quick_decryptor.h
+++ b/src/core/quick_decryptor.h
@@ -9,14 +9,12 @@
 #include <memory>
 #include <string>
 #include "common/common_types.h"
+#include "common/progress_callback.h"
 #include "common/thread.h"
 #include "core/key/key.h"
 
 namespace Core {
 
-/// (current_size, total_size)
-using ProgressCallback = std::function<void(std::size_t, std::size_t)>;
-
 /**
  * Helper that reads, decrypts and writes data. This uses three threads to process the data
  * and call progress callbacks occasionally.
@@ -41,8 +39,9 @@ public:
     bool DecryptAndWriteFile(
         std::shared_ptr<FileUtil::IOFile> source, std::size_t size,
         std::shared_ptr<FileUtil::IOFile> destination,
-        const ProgressCallback& callback = [](std::size_t, std::size_t) {}, bool decrypt = false,
-        Core::Key::AESKey key = {}, Core::Key::AESKey ctr = {}, std::size_t aes_seek_pos = 0);
+        const Common::ProgressCallback& callback = [](std::size_t, std::size_t) {},
+        bool decrypt = false, Core::Key::AESKey key = {}, Core::Key::AESKey ctr = {},
+        std::size_t aes_seek_pos = 0);
 
     void DataReadLoop();
     void DataDecryptLoop();
@@ -79,7 +78,7 @@ private:
     std::unique_ptr<std::thread> decrypt_thread;
     std::unique_ptr<std::thread> write_thread;
 
-    ProgressCallback callback;
+    Common::ProgressCallback callback;
 
     Common::Event completion_event;
     bool is_good{true};
diff --git a/src/frontend/helpers/multi_job.h b/src/frontend/helpers/multi_job.h
index 24c0546..e9257dc 100644
--- a/src/frontend/helpers/multi_job.h
+++ b/src/frontend/helpers/multi_job.h
@@ -7,6 +7,7 @@
 #include <atomic>
 #include <functional>
 #include <QThread>
+#include "common/progress_callback.h"
 #include "core/importer.h"
 
 class MultiJob : public QThread {
@@ -14,7 +15,7 @@ class MultiJob : public QThread {
 
 public:
     using ExecuteFunc = std::function<bool(Core::SDMCImporter&, const Core::ContentSpecifier&,
-                                           const Core::SDMCImporter::ProgressCallback&)>;
+                                           const Common::ProgressCallback&)>;
     using DeleteFunc = std::function<void(Core::SDMCImporter&, const Core::ContentSpecifier&)>;
     using AbortFunc = std::function<void(Core::SDMCImporter&)>;
 
diff --git a/src/frontend/helpers/simple_job.h b/src/frontend/helpers/simple_job.h
index 42931e6..47f77b8 100644
--- a/src/frontend/helpers/simple_job.h
+++ b/src/frontend/helpers/simple_job.h
@@ -7,6 +7,7 @@
 #include <functional>
 #include <QThread>
 #include "common/common_types.h"
+#include "common/progress_callback.h"
 
 /**
  * Lightweight wrapper around QThread, for easy use with progressive jobs.
@@ -15,8 +16,7 @@ class SimpleJob : public QThread {
     Q_OBJECT
 
 public:
-    using ProgressCallback = std::function<void(std::size_t, std::size_t)>;
-    using ExecuteFunc = std::function<bool(const ProgressCallback&)>;
+    using ExecuteFunc = std::function<bool(const Common::ProgressCallback&)>;
     using AbortFunc = std::function<void()>;
 
     explicit SimpleJob(QObject* parent, ExecuteFunc execute, AbortFunc abort);
diff --git a/src/frontend/import_dialog.cpp b/src/frontend/import_dialog.cpp
index 943c998..05af983 100644
--- a/src/frontend/import_dialog.cpp
+++ b/src/frontend/import_dialog.cpp
@@ -21,6 +21,7 @@
 #include <QtConcurrent/QtConcurrentRun>
 #include "common/assert.h"
 #include "common/logging/log.h"
+#include "common/progress_callback.h"
 #include "common/scope_exit.h"
 #include "frontend/helpers/multi_job.h"
 #include "frontend/helpers/simple_job.h"
@@ -726,7 +727,7 @@ void ImportDialog::StartDumpingCXISingle(const Core::ContentSpecifier& specifier
 
     auto* job = new SimpleJob(
         this,
-        [this, specifier, path](const SimpleJob::ProgressCallback& callback) {
+        [this, specifier, path](const Common::ProgressCallback& callback) {
             if (!importer.DumpCXI(specifier, path.toStdString(), callback)) {
                 FileUtil::Delete(path.toStdString());
                 return false;
@@ -789,7 +790,7 @@ void ImportDialog::StartBatchDumpingCXI() {
     auto* job = new MultiJob(
         this, importer, std::move(to_import),
         [path](Core::SDMCImporter& importer, const Core::ContentSpecifier& specifier,
-               const Core::SDMCImporter::ProgressCallback& callback) {
+               const Common::ProgressCallback& callback) {
             return importer.DumpCXI(specifier, path.toStdString() + GetCXIFileName(specifier),
                                     callback);
         },
@@ -812,7 +813,7 @@ void ImportDialog::StartBuildingCIASingle(const Core::ContentSpecifier& specifie
 
     auto* job = new SimpleJob(
         this,
-        [this, specifier, path](const SimpleJob::ProgressCallback& callback) {
+        [this, specifier, path](const Common::ProgressCallback& callback) {
             if (!importer.BuildCIA(specifier, path.toStdString(), callback)) {
                 FileUtil::Delete(path.toStdString());
                 return false;
@@ -878,7 +879,7 @@ void ImportDialog::StartBatchBuildingCIA() {
     auto* job = new MultiJob(
         this, importer, std::move(to_import),
         [path](Core::SDMCImporter& importer, const Core::ContentSpecifier& specifier,
-               const Core::SDMCImporter::ProgressCallback& callback) {
+               const Common::ProgressCallback& callback) {
             return importer.BuildCIA(specifier, path.toStdString() + GetCIAFileName(specifier),
                                      callback);
         },