--- a/src/main.cpp
+++ b/src/main.cpp
@@ -73,9 +73,9 @@
         
         if(GlobalConfig().firstRun())
         {
-            if(QMessageBox::question(0, QObject::tr("Pierwsze uruchomienie"),
-                    QObject::tr("To jest pierwsze uruchomienie programu QNapi. Czy chcesz go "
-                    "teraz skonfigurować?"), QMessageBox::Yes | QMessageBox::No )
+            if(QMessageBox::question(0, QObject::tr("First Run"),
+                    QObject::tr("This is the first launch of the program QNapi. Do you want to "
+                    "configure settings?"), QMessageBox::Yes | QMessageBox::No )
                 == QMessageBox::Yes )
             {
                 app.showSettings();
@@ -119,8 +119,8 @@
 
             if(invalidLang)
             {
-                if(QMessageBox::question(0, "QNapi", "Niepoprawny kod językowy!\n"
-                        "Czy chcesz pobrać napisy w domyślnym języku?",
+                if(QMessageBox::question(0, "QNapi", "Invalid language code!\n"
+                        "Do you want to download the subtitles in the default language?",
                         QMessageBox::Yes | QMessageBox::No)
                     != QMessageBox::Yes)
                 {
@@ -216,7 +216,7 @@
 {
     Q_UNUSED(sig);
 
-    qDebug() << "\nQNapi: usuwanie plików tymczasowych...";
+    qDebug() << "\nQNapi: deleting temporary files...";
 
     QString tmpPath = GlobalConfig().tmpPath();
 
--- a/src/qnapi.cpp
+++ b/src/qnapi.cpp
@@ -76,7 +76,7 @@
     }
     else
     {
-        errorMsg = QString("Nieobsługiwany silnik pobierania: %1.").arg(engine);
+        errorMsg = QString("Unsupported download engine: %1.").arg(engine);
         return false;
     }
 }
@@ -149,7 +149,7 @@
 
     if(!result)
     {
-        errorMsg = "Nie znaleziono napisów!";
+        errorMsg = "No subtitles found!";
     }
 
     return result;

--- a/src/qnapiapp.cpp
+++ b/src/qnapiapp.cpp
@@ -86,43 +86,43 @@
 
 void QNapiApp::createTrayIcon()
 {
-    getAction = new QAction(tr("Pobierz napisy"), 0);
+    getAction = new QAction(tr("Download subtitles"), 0);
     connect(getAction, SIGNAL(triggered()), this, SLOT(showOpenDialog()));
 
-    scanAction = new QAction(tr("Skanuj katalogi"), 0);
+    scanAction = new QAction(tr("Scan catalogs"), 0);
     connect(scanAction, SIGNAL(triggered()), this, SLOT(showScanDialog()));
 
-    convertAction = new QAction(tr("Konwertuj napisy"), 0);
+    convertAction = new QAction(tr("Convert subtitles"), 0);
     connect(convertAction, SIGNAL(triggered()), this, SLOT(showConvertDialog()));
 
-    napiGetAction = new QAction(tr("Pobierz napisy"), 0);
+    napiGetAction = new QAction(tr("Download subtitles"), 0);
     connect(napiGetAction, &QAction::triggered, [this] { showOpenDialog("NapiProjekt"); });
 
-    napiCreateUserAction = new QAction(tr("Załóż konto"), 0);
+    napiCreateUserAction = new QAction(tr("Create an account"), 0);
     connect(napiCreateUserAction, &QAction::triggered, [this] { showCreateAccount("NapiProjekt"); });
 
-    osGetAction = new QAction(tr("Pobierz napisy"), 0);
+    osGetAction = new QAction(tr("Download subtitles"), 0);
     connect(osGetAction, &QAction::triggered, [this] { showOpenDialog("OpenSubtitles"); });
 
-    osAddAction = new QAction(tr("Dodaj napisy"), 0);
+    osAddAction = new QAction(tr("Upload subtitles"), 0);
     connect(osAddAction, SIGNAL(triggered()), this, SLOT(showOSUploadDialog()));
 
-    osCreateUserAction = new QAction(tr("Załóż konto"), 0);
+    osCreateUserAction = new QAction(tr("Create an account"), 0);
     connect(osCreateUserAction, &QAction::triggered, [this] { showCreateAccount("OpenSubtitles"); });
 
-    napisy24GetAction = new QAction(tr("Pobierz napisy"), 0);
+    napisy24GetAction = new QAction(tr("Download subtitles"), 0);
     connect(napisy24GetAction, &QAction::triggered, [this] { showOpenDialog("Napisy24"); });
 
-    napisy24CreateUserAction = new QAction(tr("Załóż konto"), 0);
+    napisy24CreateUserAction = new QAction(tr("Create an account"), 0);
     connect(napisy24CreateUserAction, &QAction::triggered, [this] { showCreateAccount("OpenSNapisy24ubtitles"); });
 
-    settingsAction = new QAction(tr("Opcje"), 0);
+    settingsAction = new QAction(tr("Settings"), 0);
     connect(settingsAction, SIGNAL(triggered()), this, SLOT(showSettings()));
 
-    aboutAction = new QAction(tr("O programie"), 0);
+    aboutAction = new QAction(tr("About"), 0);
     connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAbout()));
 
-    quitAction = new QAction(tr("Zakończ"), 0);
+    quitAction = new QAction(tr("Quit"), 0);
     connect(quitAction, SIGNAL(triggered()), this, SLOT(tryQuit()));
 
     napiSubMenu = new QMenu(0);
@@ -178,7 +178,7 @@
     if(!openDialog)
     {
         openDialog = new QNapiOpenDialog(0,
-                            tr("Wybierz jeden lub więcej plików z filmami"),
+                            tr("Select one or more video files"),
                             GlobalConfig().previousDialogPath(),
                             QNapiOpenDialog::Movies);
     }

--- a/src/qnapicli.cpp
+++ b/src/qnapicli.cpp
@@ -108,7 +108,7 @@
             lang = QNapiLanguage(p).toTwoLetter();
             if(lang.isEmpty())
             {
-                printCli(QString("Niepoprawny kod jezykowy: %1").arg(p));
+                printCli(QString("Invalid language code: %1").arg(p));
                 return false;
             }
         }
@@ -171,7 +171,7 @@
     }
 
     if((mode == CM_CONSOLE || mode == CM_QUIET) && (movieList.isEmpty())) {
-        printCli("Nie znaleziono pliku!");
+        printCli("File not found!");
         return EC_MOVIE_FILE_NOT_FOUND;
     }
 
@@ -183,20 +183,20 @@
 
     if(!QNapi::checkP7ZipPath())
     {
-        printCli("Sciezka do programu p7zip jest nieprawidlowa! Sprawdz swoje ustawienia.");
+        printCli("Path to the program p7zip is incorrect! Check your settings.");
         return EC_P7ZIP_UNAVAILABLE;
     }
 
     if(!QNapi::checkTmpPath())
     {
-        printCli("Nie można pisac do katalogu tymczasowego! Sprawdz swoje ustawienia.");
+        printCli("Can not write to the temporary directory! Check your settings.");
         return EC_CANNOT_WRITE_TMP_DIR;
     }
 
     
     if(!napi.addEngines(GlobalConfig().enginesList()))
     {
-        printCli(QString("Blad: ") + napi.error());
+        printCli(QString("Error: ") + napi.error());
         return EC_UNSUPPORTED_ENGINE;
     }
 
@@ -208,19 +208,19 @@
 
     foreach(QString movie, movieList)
     {
-        printCli(QString(QString(" * Pobieranie napisow dla '%1'")).arg(QFileInfo(movie).fileName()));
+        printCli(QString(QString(" * Download subtitle for '%1'")).arg(QFileInfo(movie).fileName()));
 
         napi.setMoviePath(movie);
 
         if(!napi.checkWritePermissions())
         {
-            printCli(QString("   Brak uprawnien zapisu do katalogu '%1'!").arg(QFileInfo(movie).path()));
+            printCli(QString("   No permission to write to the directory '%1'!").arg(QFileInfo(movie).path()));
             return EC_NO_WRITE_PERMISSIONS;
         }
 
         napi.clearSubtitlesList();
 
-        printCli(QString(QString("   Obliczanie sum kontrolnych...")));
+        printCli(QString(QString("   Calculation of checksums...")));
         napi.checksum();
 
         bool found = false;
@@ -230,9 +230,9 @@
         {
             foreach(QString e, napi.listLoadedEngines())
             {
-                printCli(QString(QString("   Szukanie napisow [%1] (%2)...").arg(lang, e)));
+                printCli(QString(QString("   Search subtitle [%1] (%2)...").arg(lang, e)));
                 found = napi.lookForSubtitles(lang, e) || found;
-                printCli(QString(QString("   Szukanie napisow w jezyku zapasowym [%1] (%2)...").arg(langBackup, e)));
+                printCli(QString(QString("   Search subtitle for another language [%1] (%2)...").arg(langBackup, e)));
                 found = napi.lookForSubtitles(langBackup, e) || found;
             }
         }
@@ -240,7 +240,7 @@
         {
             foreach(QString e, napi.listLoadedEngines())
             {
-                printCli(QString(QString("   Szukanie napisow [%1] (%2)...").arg(lang, e)));
+                printCli(QString(QString("   Search subtitle [%1] (%2)...").arg(lang, e)));
                 found = napi.lookForSubtitles(lang, e) || found;
 
                 if(sp == SP_BREAK_IF_FOUND && found)
@@ -250,7 +250,7 @@
             if(!found && !langBackup.isEmpty()) {
                 foreach(QString e, napi.listLoadedEngines())
                 {
-                    printCli(QString(QString("   Szukanie napisow w jezyku zapasowym [%1] (%2)...").arg(langBackup, e)));
+                    printCli(QString(QString("   Search subtitle for another language [%1] (%2)...").arg(langBackup, e)));
                     found = napi.lookForSubtitles(langBackup, e) || found;
 
                     if(sp == SP_BREAK_IF_FOUND && found)
@@ -262,7 +262,7 @@
 
         if(!found)
         {
-            printCli(QString(QString("   Nie znaleziono napisow!")));
+            printCli(QString(QString("   Subtitles not found!")));
             return EC_SUBTITLES_NOT_FOUND;
         }
 
@@ -281,8 +281,8 @@
         {
             bool ok = false;
 
-            printCli(QString("   0)\tNie pobieraj napisow dla tego filmu"));
-            printCli("   Znalezione napisy:");
+            printCli(QString("   0)\tDo not download subtitle for this video"));
+            printCli("   Found subtitles:");
 
             int i = 1;
 
@@ -309,7 +309,7 @@
 
             while(!ok)
             {
-                std::cout << "   Wybierz napisy do pobrania: ";
+                std::cout << "   Select subtitles to download: ";
                 char line[8];
                 std::cin.getline(line, 8);
 
@@ -317,13 +317,13 @@
 
                 if(!ok)
                 {
-                    printCli("   Wpisz liczbe!");
+                    printCli("   Enter a number!");
                     std::cin.clear();
                 }
                 else if((selIdx > list.size()) || (selIdx < 0))
                 {
                     ok = false;
-                    printCli("   Wpisz liczbe z listy!");
+                    printCli("   Enter a number from the list!");
                 }
             }
 
@@ -336,30 +336,30 @@
 
         if(selIdx == -1) continue;
 
-        printCli(QString(QString("   Pobieranie napisow z serwera...")));
+        printCli(QString(QString("   Server to download subtitle from...")));
         if(!napi.download(selIdx))
         {
-            printCli(QString(QString("   Nie udalo sie pobrac napisow!")));
+            printCli(QString(QString("   Unable to download subtitles!")));
             return EC_COULD_NOT_DOWNLOAD;
         }
 
-        printCli(QString(QString("   Rozpakowywanie napisow...")));
+        printCli(QString(QString("   Unpacking subtitle file...")));
         if(!napi.unpack(selIdx))
         {
-            printCli(QString(QString("   Nie udało sie poprawnie rozpakowac napisow!")));
+            printCli(QString(QString("   Failed to unpack the subtitle file!")));
             return EC_COULD_NOT_UNARCHIVE;
         }
 
         if(napi.ppEnabled())
         {
-            printCli(QString(QString("   Przetwarzanie pobranych napisow...")));
+            printCli(QString(QString("   Processing downloaded subtitle file...")));
             napi.pp();
         }
 
-        printCli(QString(QString("   Dopasowywanie napisow...")));
+        printCli(QString(QString("   Adjusting the subtitle...")));
         if(!napi.match())
         {
-            printCli(QString(QString("   Nie udalo sie dopasowac napisow!")));
+            printCli(QString(QString("   Could not adjust the subtitle!")));
             return EC_COULD_NOT_MATCH;
         }
 
@@ -371,7 +371,7 @@
 
 void QNapiCli::printHeader()
 {
-    printCli(QString("QNapi %1, %2\nwersja Qt: %3\n")
+    printCli(QString("QNapi %1, %2\nQt version: %3\n")
                 .arg(QNAPI_DISPLAYABLE_VERSION)
                 .arg(QNAPI_URL)
                 .arg(qVersion()));
@@ -379,25 +379,25 @@
 
 void QNapiCli::printHelp()
 {
-    printCli(QString("QNapi rozprowadzany jest na warunkach licencji GNU General Public License v2.\n"));
-    printCli(QString("Skladnia: %1 [opcje] [lista plikow]").arg(QFileInfo(arguments().at(0)).fileName()));
-    printCli(QString("Dostepne opcje:"));
-    printCli(QString("   -c, --console              pobieranie napisow z konsoli"));
-    printCli(QString("   -q, --quiet                pobiera napisy nie wypisujac zadnych komunikatow"));
-    printCli(QString("                              ani nie pokazujac zadnych okien (implikuje -d)\n"));
-    printCli(QString("   -s, --show-list            pokazuj liste napisow (dziala tylko z -c)"));
-    printCli(QString("   -d, --dont-show-list       nie pokazuj listy napisow (dziala tylko z -c)\n"));
-    printCli(QString("   -l, --lang [jezyk]         preferowany jezyk napisow"));
-    printCli(QString("   -lb,--lang-backup [jezyk]  zapasowy jezyk napisow\n"));
-    printCli(QString("   -o, --options              wywoluje okno konfiguracji programu (tylko GUI)\n"));
-    printCli(QString("   -h, --help                 pokazuje tekst pomocy"));
-    printCli(QString("   -hl,--help-languages       listuje jezyki, w jakich mozna pobierac napisy\n"));
+    printCli(QString("QNapi is distributed under the GNU General Public License v2.\n"));
+    printCli(QString("Syntax: %1 [options] [list of files]").arg(QFileInfo(arguments().at(0)).fileName()));
+    printCli(QString("Available options:"));
+    printCli(QString("   -c, --console              Download subtitles using console"));
+    printCli(QString("   -q, --quiet                Download subtitles quietly without showing"));
+    printCli(QString("                              any messages or windows (implies -d)\n"));
+    printCli(QString("   -s, --show-list            show a list of subtitles (works only with -c)"));
+    printCli(QString("   -d, --dont-show-list       do not show a list of subtitles (works only with -c)\n"));
+    printCli(QString("   -l, --lang                 Preferred subtitle language"));
+    printCli(QString("   -lb,--lang-backup          Alternative subtitle language\n"));
+    printCli(QString("   -o, --options              Show program options (only GUI)\n"));
+    printCli(QString("   -h, --help                 Show help text"));
+    printCli(QString("   -hl,--help-languages       Lists the languages in which able to download subtitles\n"));
 }
 
 void QNapiCli::printHelpLanguages()
 {
-    printCli(QString("Oto lista rozpoznawanych przez QNapi jezykow i odpowiadajacym"));
-    printCli(QString("im dwuliterowych kodow:\n"));
+    printCli(QString("List of languages recognized by QNapi, including corresponding"));
+    printCli(QString("two-letter language codes:\n"));
 
     QNapiLanguage L, LB;
     QStringList langs = L.listLanguages();
@@ -411,13 +411,13 @@
     L.setLanguage(GlobalConfig().language());
     LB.setLanguage(GlobalConfig().languageBackup());
 
-    printCli(QString("\nAktualnie ustawiony domyslny jezyk napisow: %1 (%2)")
+    printCli(QString("\nCurrent default subtitle language: %1 (%2)")
                 .arg(L.toFullName()).arg(L.toTwoLetter()));
 
     if(LB.toFullName().isEmpty()) {
-        printCli(QString("Brak ustawionego zapasowego jezyka napisow"));
+        printCli(QString("No alternative subtitle language has been set"));
     } else {
-        printCli(QString("Aktualnie ustawiony zapasowy jezyk napisow: %1 (%2)")
+        printCli(QString("Current alternative subtitle language: %1 (%2)")
                     .arg(LB.toFullName()).arg(LB.toTwoLetter()));
     }
 }

--- a/src/qnapilanguage.cpp
+++ b/src/qnapilanguage.cpp
@@ -75,149 +75,149 @@
 {
     codes2l << "sq";
     codes3l << "alb";
-    names << tr("Albański");
+    names << tr("Albanian");
 
     codes2l << "en";
     codes3l << "eng";
-    names << tr("Angielski");
+    names << tr("English");
 
     codes2l << "ar";
     codes3l << "ara";
-    names << tr("Arabski");
+    names << tr("Arabic");
 
     codes2l << "bg";
     codes3l << "bul";
-    names << tr("Bułgarski");
+    names << tr("Bulgarian");
 
     codes2l << "zh";
     codes3l << "chi";
-    names << tr("Chiński");
+    names << tr("Chinese");
 
     codes2l << "hr";
     codes3l << "hrv";
-    names << tr("Chorwacki");
+    names << tr("Croatian");
 
     codes2l << "cs";
     codes3l << "cze";
-    names << tr("Czeski");
+    names << tr("Czech");
 
     codes2l << "da";
     codes3l << "dan";
-    names << tr("Duński");
+    names << tr("Danish");
 
     codes2l << "et";
     codes3l << "est";
-    names << tr("Estoński");
+    names << tr("Estonian");
 
     codes2l << "fi";
     codes3l << "fin";
-    names << tr("Fiński");
+    names << tr("Finnish");
 
     codes2l << "fr";
     codes3l << "fre";
-    names << tr("Francuski");
+    names << tr("French");
 
     codes2l << "gl";
     codes3l << "glg";
-    names << tr("Galicyjski");
+    names << tr("Galician");
 
     codes2l << "el";
     codes3l << "ell";
-    names << tr("Grecki");
+    names << tr("Greek");
 
     codes2l << "he";
     codes3l << "heb";
-    names << tr("Hebrajski");
+    names << tr("Hebrew");
 
     codes2l << "es";
     codes3l << "spa";
-    names << tr("Hiszpanski");
+    names << tr("Spanish");
 
     codes2l << "nl";
     codes3l << "dut";
-    names << tr("Holenderski");
+    names << tr("Dutch");
 
     codes2l << "id";
     codes3l << "ind";
-    names << tr("Indonezyjski");
+    names << tr("Indonesian");
 
     codes2l << "ja";
     codes3l << "jpn";
-    names << tr("Japoński");
+    names << tr("Japanese");
 
     codes2l << "ko";
     codes3l << "kor";
-    names << tr("Koreański");
+    names << tr("Korean");
 
     codes2l << "mk";
     codes3l << "mac";
-    names << tr("Macedoński");
+    names << tr("Macedonian");
 
     codes2l << "de";
     codes3l << "ger";
-    names << tr("Niemiecki");
+    names << tr("German");
 
     codes2l << "no";
     codes3l << "nor";
-    names << tr("Norweski");
+    names << tr("Norwegian");
 
     codes2l << "oc";
     codes3l << "oci";
-    names << tr("Oksytański");
+    names << tr("Occitan");
 
     codes2l << "fa";
     codes3l << "per";
-    names << tr("Perski (farsi)");
+    names << tr("Persian (farsi)");
 
     codes2l << "pl";
     codes3l << "pol";
-    names << tr("Polski");
+    names << tr("Polish");
 
     codes2l << "pt";
     codes3l << "por";
-    names << tr("Portugalski");
+    names << tr("Portuguese");
 
     codes2l << "pb";
     codes3l << "pob";
-    names << tr("Portugalski-BR");
+    names << tr("Portuguese-BR");
 
     codes2l << "ru";
     codes3l << "rus";
-    names << tr("Rosyjski");
+    names << tr("Russian");
 
     codes2l << "ro";
     codes3l << "rum";
-    names << tr("Rumuński");
+    names << tr("Romanian");
 
     codes2l << "sr";
     codes3l << "scc";
-    names << tr("Serbski");
+    names << tr("Serbian");
 
     codes2l << "sl";
     codes3l << "slv";
-    names << tr("Słoweński");
+    names << tr("Slovenian");
 
     codes2l << "sv";
     codes3l << "swe";
-    names << tr("Szwedzki");
+    names << tr("Swedish");
 
     codes2l << "sk";
     codes3l << "slo";
-    names << tr("Słowacki");
+    names << tr("Slovak");
 
     codes2l << "tr";
     codes3l << "tur";
-    names << tr("Turecki");
+    names << tr("Turkish");
 
     codes2l << "vi";
     codes3l << "vie";
-    names << tr("Wietnamski");
+    names << tr("Vietnamese");
 
     codes2l << "hu";
     codes3l << "hun";
-    names << tr("Węgierski");
+    names << tr("Hungarian");
 
     codes2l << "it";
     codes3l << "ita";
-    names << tr("Włoski");
+    names << tr("Italian");
 }

--- a/src/qnapiopendialog.cpp
+++ b/src/qnapiopendialog.cpp
@@ -25,11 +25,11 @@
 
     if(filterMode == Movies)
     {
-        setNameFilter(tr("Filmy (%1);;Wszystkie pliki (*.*)").arg(GlobalConfig().movieExtensionsFilter()));
+        setNameFilter(tr("Videos (%1);;All files (*.*)").arg(GlobalConfig().movieExtensionsFilter()));
     }
     else if(filterMode == Subtitles)
     {
-        setNameFilter(tr("Napisy (%1);;Wszystkie pliki (*.*)").arg(GlobalConfig().subtitleExtensionsFilter()));
+        setNameFilter(tr("Subtitles (%1);;All files (*.*)").arg(GlobalConfig().subtitleExtensionsFilter()));
     }
 
     if(QFileInfo(init_path).isDir())
@@ -45,7 +45,7 @@
 
     sideUrls << QString(QDir::homePath() + "/Movies") << QString(QDir::homePath() + "/movies")
                 << QString(QDir::homePath() + "/Video") << QString(QDir::homePath() + "/video")
-                << QString(QDir::homePath() + "/Filmy") << QString(QDir::homePath() + "/filmy")
+                << QString(QDir::homePath() + "/Videos") << QString(QDir::homePath() + "/videos")
                 << QString(QDir::homePath() + "/Wideo") << QString(QDir::homePath() + "/wideo");
 
     QList<QUrl> urls = sidebarUrls();

--- a/src/forms/frmlistsubtitles.cpp
+++ b/src/forms/frmlistsubtitles.cpp
@@ -33,8 +33,8 @@
 
 void frmListSubtitles::setFileName(const QString & name)
 {
-    ui.lbSelectSubtitles->setText(QString(  "Z poniższej listy wybierz napisy, które"
-                                            " chcesz dopasować do pliku<br><br><b>%1</b>")
+    ui.lbSelectSubtitles->setText(QString(  "Select the subtitle which you want to"
+                                            " adjust to the video file<br><br><b>%1</b>")
                                         .arg(name));
 }
 
@@ -94,8 +94,8 @@
     if(ui.twSubtitles->selectedItems().size() == 0)
     {
         QMessageBox::warning(   this,
-                                "Nie wybrano napisów z listy",
-                                "Musisz wybrać napisy z listy!");
+                                "No subtitle selected",
+                                "You need to select a subtitle from the list!");
     }
     else
     {

--- a/src/forms/frmconvert.cpp
+++ b/src/forms/frmconvert.cpp
@@ -91,7 +91,7 @@
         QString detectedFormat = subConverter.detectFormat(srcSubFileName);
         if(detectedFormat.isEmpty())
         {
-            ui.lbDetectedFormatValue->setText(tr("niepoprawny"));
+            ui.lbDetectedFormatValue->setText(tr("incorrect"));
             ui.lbDetectedFormatValue->setStyleSheet("QLabel { color: red }");
         } else {
             ui.lbDetectedFormatValue->setText(detectedFormat);
@@ -136,7 +136,7 @@
         fpsNeeded = (srcSF->isTimeBased() != targetSF->isTimeBased()) || (ui.cbDelaySubtitles->isChecked() && !targetSF->isTimeBased());
 
         QString targetDefaultExt = targetSF->defaultExtension();
-        ui.cbTargetExtension->setItemText(0, tr("Domyślne (%1)").arg(targetDefaultExt));
+        ui.cbTargetExtension->setItemText(0, tr("Default (%1)").arg(targetDefaultExt));
         generateTargetFileName();
     }
 
@@ -165,7 +165,7 @@
 
 void frmConvert::movieFPSSelectClicked()
 {
-    QNapiOpenDialog openMovie(this, tr("Wybierz plik z filmem"),
+    QNapiOpenDialog openMovie(this, tr("Select a video file"),
                               QFileInfo(ui.leSrcSubFile->text()).path(),
                               QNapiOpenDialog::Movies);
     if(openMovie.selectFile())
@@ -185,7 +185,7 @@
 
 void frmConvert::targetMovieFPSSelectClicked()
 {
-    QNapiOpenDialog openMovie(this, tr("Wybierz plik z filmem"),
+    QNapiOpenDialog openMovie(this, tr("Select a video file"),
                               QFileInfo(ui.leSrcSubFile->text()).path(),
                               QNapiOpenDialog::Movies);
     if(openMovie.selectFile())
@@ -249,11 +249,11 @@
                                      fpsRatio,
                                      delayOffset))
     {
-        QMessageBox::information(this, tr("Przekonwertowano napisy"),
-                                 tr("Poprawnie zmieniono format napisów z '%1' na '%2'").arg(srcFormat, targetFormat));
+        QMessageBox::information(this, tr("Converted subtitles"),
+                                 tr("Changed subtitles format from '%1' to '%2'").arg(srcFormat, targetFormat));
 
     } else {
-        QMessageBox::warning(this, tr("Problem podczas konwertowania napisów"),
-                                 tr("Wystąpił problem podczas zamiany formatu napisów!"));
+        QMessageBox::warning(this, tr("An error occured while converting strings"),
+                                 tr("Could not change subtitle format!"));
     }
 }

--- a/src/forms/frmabout.cpp
+++ b/src/forms/frmabout.cpp
@@ -21,7 +21,7 @@
 
     setAttribute(Qt::WA_QuitOnClose, false);
     ui.lbTitle->setText(QString("QNapi ") + QNAPI_DISPLAYABLE_VERSION);
-    ui.lbQtVersion->setText(QString("Wersja Qt: ") + qVersion());
+    ui.lbQtVersion->setText(QString("Qt version: ") + qVersion());
 
     QRect position = frameGeometry();
     position.moveCenter(QDesktopWidget().availableGeometry().center());

--- a/src/forms/frmoptions.cpp
+++ b/src/forms/frmoptions.cpp
@@ -39,7 +39,7 @@
 #endif
 
     QString tlcode;
-    ui.cbLangBackup->addItem("Brak", QVariant(""));
+    ui.cbLangBackup->addItem("Error", QVariant(""));
     foreach(QString lang, QNapiLanguage("").listLanguages())
     {
         tlcode = QNapiLanguage(lang).toTwoLetter();
@@ -97,14 +97,14 @@
 
 void frmOptions::select7zPath()
 {
-    QString path7z = QFileDialog::getOpenFileName(this, tr("Wskaż ścieżkę do programu 7z"),
+    QString path7z = QFileDialog::getOpenFileName(this, tr("Specify the path for 7z executable"),
                                                     QFileInfo(ui.le7zPath->text()).path());
     if(!path7z.isEmpty())
     {
         if(!QFileInfo(path7z).isExecutable())
-            QMessageBox::warning(this, tr("Niepoprawna ścieżka"),
-                tr("Wskazana przez Ciebie ścieżka do programu 7z jest niepoprawna. Jeśli nie możesz "
-                    "odnaleźć programu 7z, spróbuj zainstalować pakiet p7zip-full."));
+            QMessageBox::warning(this, tr("Invalid path"),
+                tr("Defined path to 7z executable is invalid. If you can not "
+                    "locate 7z executable, try installing p7zip-full package."));
         else
             ui.le7zPath->setText(path7z);
     }
@@ -123,7 +123,7 @@
 void frmOptions::selectTmpPath()
 {
     QString tmpDir = QFileDialog::getExistingDirectory(this,
-                                    tr("Wskaż katalog tymczasowy"),
+                                    tr("Specify temporary directory"),
                                     QFileInfo(ui.leTmpPath->text()).path(),
                                     QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);
     if(!tmpDir.isEmpty())
@@ -171,8 +171,8 @@
     {
         item->setCheckState(Qt::Checked);
         QMessageBox::warning(this,
-                            "Ostrzeżenie",
-                            "Przynajmniej jeden moduł pobierania musi pozostać aktywny!");
+                            "Warning",
+                            "At least one module collection must remain active!");
     }
     
 }
@@ -222,7 +222,7 @@
     QString engineInfo = n.engineByName(engineName)->engineInfo();
     
     QMessageBox::information(this,
-                             QString("Informacje o silniku %1").arg(engineName),
+                             QString("Engine information %1").arg(engineName),
                              engineInfo);
 }
 
@@ -230,14 +230,14 @@
 {
     if(format == 0)
     {
-        ui.cbSubExtension->setItemText(0, tr("Domyślne"));
+        ui.cbSubExtension->setItemText(0, tr("Default"));
     }
     else
     {
         QString targetFormatName = ui.cbSubFormat->currentText();
         SubtitleFormat * targetSF = GlobalFormatsRegistry().select(targetFormatName);
         QString targetDefaultExt = targetSF->defaultExtension();
-        ui.cbSubExtension->setItemText(0, tr("Domyślne (%1)").arg(targetDefaultExt));
+        ui.cbSubExtension->setItemText(0, tr("Default (%1)").arg(targetDefaultExt));
     }
 }
 
--- a/src/forms/frmprogress.cpp
+++ b/src/forms/frmprogress.cpp
@@ -91,22 +91,22 @@
 
     if(!QNapi::checkP7ZipPath())
     {
-        QMessageBox::warning(0, tr("Brak programu p7zip!"),
-                                tr("Ścieżka do programu p7zip jest nieprawidłowa!"));
+        QMessageBox::warning(0, tr("Can not find p7zip!"),
+                                tr("The path to the program p7zip is incorrect!"));
         return false;
     }
 
     if(!QNapi::checkTmpPath())
     {
-        QMessageBox::warning(0, tr("Nieprawidłowy katalog tymczasowy!"),
-                                tr("Nie można pisać do katalogu tymczasowego! Sprawdź swoje ustawienia."));
+        QMessageBox::warning(0, tr("Invalid temporary directory!"),
+                                tr("Unable to write to the temporary directory! Check your settings."));
         return false;
     }
 
     if(getThread.queue.isEmpty())
     {
-        QMessageBox::warning(0, tr("Brak plików!"),
-                                tr("Nie wskazano filmów do pobrania napisów!"));
+        QMessageBox::warning(0, tr("No files!"),
+                                tr("Indicated movies to download the subtitles for!"));
         return false;
     }
 
@@ -139,8 +139,8 @@
     if(stageProgress >= 0) lastStageProgress = stageProgress;
 
     QString windowTitle = (lastAll > 1)
-                            ? QString(tr("QNapi - pobieranie napisów (%1/%2)")).arg(lastCurrent + 1).arg(lastAll)
-                            : QString(tr("QNapi - pobieranie napisów..."));
+                            ? QString(tr("QNapi - downloading subtitle (%1/%2)")).arg(lastCurrent + 1).arg(lastAll)
+                            : QString(tr("QNapi - downloading subtitle..."));
     setWindowTitle(windowTitle);
 
     ui.pbProgress->setMaximum(lastAll * 100);
@@ -180,7 +180,7 @@
     {
         if(!getThread.criticalMessage.isEmpty())
         {
-            QMessageBox::critical(0, tr("Błąd krytyczny!"), getThread.criticalMessage);
+            QMessageBox::critical(0, tr("Critical error!"), getThread.criticalMessage);
         }
         else if(queue.size() > 0 && !getThread.subStatusList.isEmpty())
         {
@@ -202,13 +202,13 @@
     if(getThread.isRunning())
     {
         if( QMessageBox::question(this, tr("QNapi"),
-                tr("Czy chcesz przerwać pobieranie napisów?"),
+                tr("Do you want to cancel downloading the subtitle?"),
                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes )
         {
             mutex.lock();
             showSummary = false;
             getThread.requestAbort();
-            ui.lbAction->setText(tr("Kończenie zadań..."));
+            ui.lbAction->setText(tr("Finishing the task..."));
             ui.lbFileName->setText("");
             ui.pbCancel->setEnabled(false);
             qApp->processEvents();
@@ -275,7 +275,7 @@
     }
     else if(!napi->addEngines(GlobalConfig().enginesList()))
     {
-        emit criticalError(tr("Błąd: ") + napi->error());
+        emit criticalError(tr("Error: ") + napi->error());
         delete napi;
         return;
     }
@@ -295,11 +295,11 @@
         napi->setMoviePath(queue[i]);
 
         emit progressChange(i, queue.size(), 0.1f);
-        emit actionChange(tr("Sprawdzanie uprawnień do katalogu z filmem..."));
+        emit actionChange(tr("Checking permissions of the video directory..."));
 
         if(!napi->checkWritePermissions())
         {
-            emit criticalError(tr("Brak uprawnień zapisu do katalogu '%1'!").arg(QFileInfo(queue[i]).path()));
+            emit criticalError(tr("No permission to write to the directory '%1'!").arg(QFileInfo(queue[i]).path()));
             delete napi;
             return;
         }
@@ -307,7 +307,7 @@
         napi->clearSubtitlesList();
 
         emit progressChange(i, queue.size(), 0.3f);
-        emit actionChange(tr("Obliczanie sumy kontrolnej pliku..."));
+        emit actionChange(tr("Calculating checksum of the file..."));
 
         napi->checksum();
 
@@ -322,12 +322,12 @@
             foreach(QString e, napi->listLoadedEngines())
             {
                 emit progressChange(i, queue.size(), 0.4f);
-                emit actionChange(tr("Szukanie napisów [%1] (%2)...").arg(language, e));
+                emit actionChange(tr("Searching subtitle [%1] (%2)...").arg(language, e));
                 found = napi->lookForSubtitles(language, e) || found;
 
                 ABORT_POINT
 
-                emit actionChange(tr("Szukanie napisów w języku zapasowym [%1] (%2)...").arg(languageBackup, e));
+                emit actionChange(tr("Searching alternative subtitle [%1] (%2)...").arg(languageBackup, e));
                 found = napi->lookForSubtitles(languageBackup, e) || found;
 
                 ABORT_POINT
@@ -338,7 +338,7 @@
             foreach(QString e, napi->listLoadedEngines())
             {
                 emit progressChange(i, queue.size(), 0.4f);
-                emit actionChange(tr("Szukanie napisów [%1] (%2)...").arg(language, e));
+                emit actionChange(tr("Searching subtitle [%1] (%2)...").arg(language, e));
                 found = napi->lookForSubtitles(language, e) || found;
 
                 if(sp == SP_BREAK_IF_FOUND && found){
@@ -352,7 +352,7 @@
                 foreach(QString e, napi->listLoadedEngines())
                 {
                     emit progressChange(i, queue.size(), 0.45f);
-                    emit actionChange(tr("Szukanie napisów w języku zapasowym [%1] (%2)...").arg(languageBackup, e));
+                    emit actionChange(tr("Searching alternative subtitle [%1] (%2)...").arg(languageBackup, e));
                     found = napi->lookForSubtitles(languageBackup, e) || found;
 
                     if(sp == SP_BREAK_IF_FOUND && found)
@@ -395,7 +395,7 @@
         }
 
         emit progressChange(i, queue.size(), 0.5);
-        emit actionChange(tr("Pobieranie napisów dla pliku..."));
+        emit actionChange(tr("Downloading the subtitle file..."));
 
         if(!napi->download(selIdx))
         {
@@ -409,7 +409,7 @@
         ABORT_POINT
 
         emit progressChange(i, queue.size(), 0.65);
-        emit actionChange(tr("Rozpakowywanie napisów..."));
+        emit actionChange(tr("Unpacking the subtitle file..."));
 
         if(!napi->unpack(selIdx))
         {
@@ -421,12 +421,12 @@
         if(napi->ppEnabled())
         {
             emit progressChange(i, queue.size(), 0.8f);
-            emit actionChange(tr("Przetwarzanie napisów..."));
+            emit actionChange(tr("Processing the subtitle..."));
             napi->pp();
         }
 
         emit progressChange(i, queue.size(), 0.9);
-        emit actionChange(tr("Dopasowywanie napisów..."));
+        emit actionChange(tr("Adjusting the subtitle..."));
 
         if(!napi->match())
         {
@@ -435,7 +435,7 @@
             ++napiFail;
             subStatusList << QNapiSubtitleInfo::fromFailed(queue[i]);
 
-            emit criticalError(tr("Nie udało się dopasować napisów!!"));
+            emit criticalError(tr("Could not adjust the subtitle!!"));
             return;
         }
 
--- a/src/forms/frmscan.cpp
+++ b/src/forms/frmscan.cpp
@@ -97,7 +97,7 @@
     QString dir = QFileInfo(ui.leDirectory->text()).path();
     dir = QDir().exists(dir) ? dir : GlobalConfig().lastScanDir();
 
-    QNapiOpenDialog openDialog(this, tr("Wskaż katalog do skanowania"),
+    QNapiOpenDialog openDialog(this, tr("Select the folder to scan"),
                                 dir, QNapiOpenDialog::None);
 
     if(openDialog.selectDirectory())
@@ -122,8 +122,8 @@
     {
         ui.leDirectory->setEnabled(false);
         ui.pbDirectorySelect->setEnabled(false);
-        ui.pbScan->setText(tr("Przerwij"));
-        ui.lbAction->setText(tr("Skanowanie katalogów..."));
+        ui.pbScan->setText(tr("Cancel"));
+        ui.lbAction->setText(tr("Scanning directories..."));
         ui.pbGet->setEnabled(false);
         enableControlWidgets(false);
         enableFilesWidgets(false);
@@ -141,7 +141,7 @@
     else
     {
         scanThread.requestAbort();
-        ui.lbAction->setText(tr("Przerywanie skanowania katalogów..."));
+        ui.lbAction->setText(tr("Scanning of directories interrupted..."));
         ui.pbScan->setEnabled(false);
         qApp->processEvents();
         scanThread.wait();
@@ -164,17 +164,17 @@
 
 void frmScan::folderChange(const QString & dirName)
 {
-    ui.lbAction->setText(QString("Skanowanie katalogu <b>%1</b>..").arg(dirName));
+    ui.lbAction->setText(QString("Scanning directory <b>%1</b>..").arg(dirName));
 }
 
 void frmScan::scanFinished()
 {
     enableControlWidgets(true);
     enableFilesWidgets(ui.lwMovies->count() > 0);
-    ui.pbScan->setText("Skanuj");
+    ui.pbScan->setText("Scan");
     ui.lbAction->setText(tr((ui.lwMovies->count() > 0)
-                            ? "Zaznacz filmy, do których chcesz pobrać napisy."
-                            : "Nie znaleziono plików z filmami."));
+                            ? "Select the videos you wish to download subtitles for."
+                            : "Not video files found."));
 }
 
 void frmScan::enableControlWidgets(bool enable)

--- a/src/forms/frmsummary.cpp
+++ b/src/forms/frmsummary.cpp
@@ -73,8 +73,8 @@
     ui.lbSuccess->setVisible(goodCount != 0);
     ui.lbFail->setVisible(badCount != 0);
 
-    ui.lbSuccess->setText(tr("Pobrano napisy dla %1 %2")
-        .arg(goodCount).arg(tr(goodCount > 1 ? "plików" : "pliku")));
-    ui.lbFail->setText(tr("Nie pobrano napisów dla %1 %2")
-        .arg(badCount).arg(tr(badCount > 1 ? "plików" : "pliku")));
+    ui.lbSuccess->setText(tr("Downloading subtitle for %1 %2")
+        .arg(goodCount).arg(tr(goodCount > 1 ? "files" : "file")));
+    ui.lbFail->setText(tr("Could not download subtitle for %1 %2")
+        .arg(badCount).arg(tr(badCount > 1 ? "files" : "file")));
 }

--- a/src/engines/qnapiprojektengine.cpp
+++ b/src/engines/qnapiprojektengine.cpp
@@ -63,7 +63,7 @@
 // zwraca informacje nt. modulu
 QString QNapiProjektEngine::engineInfo()
 {
-    return "Moduł pobierania napisów z bazy <b>www.napiprojekt.pl</b>";
+    return "Fetching from <b>www.napiprojekt.pl</b>";
 }
 
 // zwraca ikone w formacie XMP

--- a/src/engines/qnapisy24engine.cpp
+++ b/src/engines/qnapisy24engine.cpp
@@ -37,7 +37,7 @@
 
 QString QNapisy24Engine::engineInfo()
 {
-    return "Moduł pobierania napisów z bazy <b>www.napisy24.pl</b><br />";
+    return "Fetching from <b>www.napisy24.pl</b><br />";
 }
 
 QIcon QNapisy24Engine::engineIcon()

--- a/src/engines/qopensubtitlesengine.cpp
+++ b/src/engines/qopensubtitlesengine.cpp
@@ -48,7 +48,7 @@
 // zwraca informacje nt. modulu
 QString QOpenSubtitlesEngine::engineInfo()
 {
-    return "Moduł pobierania napisów z bazy <b>www.opensubtitles.org</b>";
+    return "Fetching from <b>www.opensubtitles.org</b>";
 }
 
 // zwraca ikone w formacie XMP

--- a/src/subconvert/subtitleconverter.cpp
+++ b/src/subconvert/subtitleconverter.cpp
@@ -168,7 +168,7 @@
                 adEntry.frameStart = sf.entries.back().frameStop + 50L;
                 adEntry.frameStop = adEntry.frameStart + 200L;
             }
-            QString ad = QString("Napisy pobrane i przetworzone programem QNapi|");
+            QString ad = QString("QNapi has downloaded and processed the subtitles|");
             adEntry.tokens = targetFormat->decodeTokenStream(ad);
             SubToken urlToken;
             urlToken.type = STT_WORD;