diff --git a/quantum/keymap_extras/keymap_slovak.h b/quantum/keymap_extras/keymap_slovak.h
new file mode 100644
index 000000000..7a02dcfdf
--- /dev/null
+++ b/quantum/keymap_extras/keymap_slovak.h
@@ -0,0 +1,176 @@
+/* Copyright 2020
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#pragma once
+
+#include "keymap.h"
+
+// clang-format off
+
+/*
+ * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┐
+ * │ ; │ + │ ľ │ š │ č │ ť │ ž │ ý │ á │ í │ é │ = │ ´ │ │
+ * ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─────┤
+ * │ │ Q │ W │ E │ R │ T │ Z │ U │ I │ O │ P │ ú │ ä │ │
+ * ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┐ │
+ * │ │ A │ S │ D │ F │ G │ H │ J │ K │ L │ ô │ § │ ň │ │
+ * ├────┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┴────┤
+ * │ │ & │ Y │ X │ C │ V │ B │ N │ M │ , │ . │ - │ │
+ * ├────┼───┴┬──┴─┬─┴───┴───┴───┴───┴───┴──┬┴───┼───┴┬────┬────┤
+ * │ │ │ │ │ │ │ │ │
+ * └────┴────┴────┴────────────────────────┴────┴────┴────┴────┘
+ */
+// Row 1
+#define SK_SCLN KC_GRV // ;
+#define SK_PLUS KC_1 // +
+#define SK_LACU KC_2 // ľ
+#define SK_SCAR KC_3 // š
+#define SK_CCAR KC_4 // č
+#define SK_TACU KC_5 // ť
+#define SK_ZCAR KC_6 // ž
+#define SK_YACU KC_7 // ý
+#define SK_AACU KC_8 // á
+#define SK_IACU KC_9 // í
+#define SK_EACU KC_0 // é
+#define SK_EQL KC_MINS // =
+#define SK_ACUT KC_EQL // ´ (dead)
+// Row 2
+#define SK_Q KC_Q // Q
+#define SK_W KC_W // W
+#define SK_E KC_E // E
+#define SK_R KC_R // R
+#define SK_T KC_T // T
+#define SK_Z KC_Y // Z
+#define SK_U KC_U // U
+#define SK_I KC_I // I
+#define SK_O KC_O // O
+#define SK_P KC_P // P
+#define SK_UACU KC_LBRC // ú
+#define SK_ADIA KC_RBRC // ä
+// Row 3
+#define SK_A KC_A // A
+#define SK_S KC_S // S
+#define SK_D KC_D // D
+#define SK_F KC_F // F
+#define SK_G KC_G // G
+#define SK_H KC_H // H
+#define SK_J KC_J // J
+#define SK_K KC_K // K
+#define SK_L KC_L // L
+#define SK_OCIR KC_SCLN // ô
+#define SK_SECT KC_QUOT // §
+#define SK_NCAR KC_NUHS // ň
+// Row 4
+#define SK_AMPR KC_NUBS // &
+#define SK_Y KC_Z // Y
+#define SK_X KC_X // X
+#define SK_C KC_C // C
+#define SK_V KC_V // V
+#define SK_B KC_B // B
+#define SK_N KC_N // N
+#define SK_M KC_M // M
+#define SK_COMM KC_COMM // ,
+#define SK_DOT KC_DOT // .
+#define SK_MINS KC_SLSH // -
+
+/* Shifted symbols
+ * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┐
+ * │ ° │ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ % │ ˇ │ │
+ * ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─────┤
+ * │ │ │ │ │ │ │ │ │ │ │ │ / │ ( │ │
+ * ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┐ │
+ * │ │ │ │ │ │ │ │ │ │ │ " │ ! │ ) │ │
+ * ├────┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┴────┤
+ * │ │ * │ │ │ │ │ │ │ │ ? │ : │ _ │ │
+ * ├────┼───┴┬──┴─┬─┴───┴───┴───┴───┴───┴──┬┴───┼───┴┬────┬────┤
+ * │ │ │ │ │ │ │ │ │
+ * └────┴────┴────┴────────────────────────┴────┴────┴────┴────┘
+ */
+// Row 1
+#define SK_RNGA S(SK_SCLN) // ° (dead)
+#define SK_1 S(SK_PLUS) // 1
+#define SK_2 S(SK_LACU) // 2
+#define SK_3 S(SK_SCAR) // 3
+#define SK_4 S(SK_CCAR) // 4
+#define SK_5 S(SK_TACU) // 5
+#define SK_6 S(SK_ZCAR) // 6
+#define SK_7 S(SK_YACU) // 7
+#define SK_8 S(SK_AACU) // 8
+#define SK_9 S(SK_IACU) // 9
+#define SK_0 S(SK_EACU) // 0
+#define SK_PERC S(SK_EQL) // %
+#define SK_CARN S(SK_ACUT) // ˇ (dead)
+// Row 2
+#define SK_SLSH S(SK_UACU) // /
+#define SK_LPRN S(SK_ADIA) // (
+// Row 3
+#define SK_DQUO S(SK_OCIR) // "
+#define SK_EXLM S(SK_SECT) // !
+#define SK_RPRN S(SK_NCAR) // )
+// Row 4
+#define SK_ASTR S(SK_AMPR) // *
+#define SK_QUES S(SK_COMM) // ?
+#define SK_COLN S(SK_DOT) // :
+#define SK_UNDS S(SK_MINS) // _
+
+/* AltGr symbols
+ * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┐
+ * │ │ ~ │ │ ^ │ ˘ │ ° │ ˛ │ ` │ ˙ │ │ ˝ │ ¨ │ ¸ │ │
+ * ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─────┤
+ * │ │ \ │ | │ € │ │ │ │ │ │ │ ' │ ÷ │ × │ │
+ * ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┐ │
+ * │ │ │ đ │ Đ │ [ │ ] │ │ │ ł │ Ł │ $ │ ß │ ¤ │ │
+ * ├────┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┴────┤
+ * │ │ < │ > │ # │ │ @ │ { │ } │ │ │ │ │ │
+ * ├────┼───┴┬──┴─┬─┴───┴───┴───┴───┴───┴──┬┴───┼───┴┬────┬────┤
+ * │ │ │ │ │ │ │ │ │
+ * └────┴────┴────┴────────────────────────┴────┴────┴────┴────┘
+ */
+// Row 1
+#define SK_TILD ALGR(SK_PLUS) // ~
+#define SK_CIRC ALGR(SK_LACU) // ^ (dead)
+#define SK_BREV ALGR(SK_SCAR) // ˘ (dead)
+#define SK_RNGA ALGR(SK_CCAR) // ° (dead)
+#define SK_OGON ALGR(SK_TACU) // ˛ (dead)
+#define SK_GRV ALGR(SK_ZCAR) // `
+#define SK_DOTA ALGR(SK_YACU) // ˙ (dead)
+#define SK_DACU ALGR(SK_EACU) // ˝ (dead)
+#define SK_DIAE ALGR(SK_EQL) // ¨ (dead)
+#define SK_CEDL ALGR(SK_ACUT) // ¸ (dead)
+// Row 2
+#define SK_BSLS ALGR(SK_Q) // (backslash)
+#define SK_PIPE ALGR(SK_W) // |
+#define SK_EURO ALGR(SK_E) // €
+#define SK_QUOT ALGR(SK_P) // '
+#define SK_DIV ALGR(SK_UACU) // ÷
+#define SK_MUL ALGR(SK_ADIA) // ×
+// Row 3
+#define SK_LDST ALGR(SK_S) // đ
+#define SK_CDST ALGR(SK_D) // Đ
+#define SK_LBRC ALGR(SK_F) // [
+#define SK_RBRC ALGR(SK_G) // ]
+#define SK_LLST ALGR(SK_K) // ł
+#define SK_CLST ALGR(SK_L) // Ł
+#define SK_DLR ALGR(SK_OCIR) // $
+#define SK_SS ALGR(SK_SECT) // ß
+#define SK_CURR ALGR(SK_NCAR) // ¤
+// Row 4
+#define SK_LABK ALGR(SK_AMPR) // <
+#define SK_RABK ALGR(SK_Y) // >
+#define SK_HASH ALGR(SK_X) // #
+#define SK_AT ALGR(SK_V) // @
+#define SK_LCBR ALGR(SK_B) // {
+#define SK_RCBR ALGR(SK_N) // }
diff --git a/quantum/keymap_extras/sendstring_slovak.h b/quantum/keymap_extras/sendstring_slovak.h
new file mode 100644
index 000000000..72eeb86a5
--- /dev/null
+++ b/quantum/keymap_extras/sendstring_slovak.h
@@ -0,0 +1,100 @@
+/* Copyright 2020
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+// Sendstring lookup tables for Slovak layouts
+
+#pragma once
+
+#include "keymap_slovak.h"
+#include "quantum.h"
+
+// clang-format off
+
+const uint8_t ascii_to_shift_lut[16] PROGMEM = {
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+
+ KCLUT_ENTRY(0, 1, 1, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(1, 1, 1, 0, 0, 0, 0, 1),
+ KCLUT_ENTRY(1, 1, 1, 1, 1, 1, 1, 1),
+ KCLUT_ENTRY(1, 1, 1, 0, 0, 0, 0, 1),
+ KCLUT_ENTRY(0, 1, 1, 1, 1, 1, 1, 1),
+ KCLUT_ENTRY(1, 1, 1, 1, 1, 1, 1, 1),
+ KCLUT_ENTRY(1, 1, 1, 1, 1, 1, 1, 1),
+ KCLUT_ENTRY(1, 1, 1, 0, 0, 0, 0, 1),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0)
+};
+
+const uint8_t ascii_to_altgr_lut[16] PROGMEM = {
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+
+ KCLUT_ENTRY(0, 0, 0, 0, 1, 0, 0, 1),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(1, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 1, 1, 1, 1, 0),
+ KCLUT_ENTRY(1, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 0, 0, 0, 0, 0),
+ KCLUT_ENTRY(0, 0, 0, 1, 1, 1, 1, 0)
+};
+
+const uint8_t ascii_to_keycode_lut[128] PROGMEM = {
+ // NUL SOH STX ETX EOT ENQ ACK BEL
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ // BS TAB LF VT FF CR SO SI
+ KC_BSPC, KC_TAB, KC_ENT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ // DLE DC1 DC2 DC3 DC4 NAK SYN ETB
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ // CAN EM SUB ESC FS GS RS US
+ XXXXXXX, XXXXXXX, XXXXXXX, KC_ESC, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+
+ // ! " # $ % & '
+ KC_SPC, SK_SECT, SK_OCIR, SK_X, SK_OCIR, SK_EQL, SK_AMPR, SK_P,
+ // ( ) * + , - . /
+ SK_ADIA, SK_NCAR, SK_AMPR, SK_PLUS, SK_COMM, SK_MINS, SK_DOT, SK_UACU,
+ // 0 1 2 3 4 5 6 7
+ SK_EACU, SK_PLUS, SK_LACU, SK_SCAR, SK_CCAR, SK_TACU, SK_ZCAR, SK_YACU,
+ // 8 9 : ; < = > ?
+ SK_AACU, SK_IACU, SK_DOT, SK_SCLN, SK_AMPR, SK_EQL, SK_Y, SK_COMM,
+ // @ A B C D E F G
+ SK_V, SK_A, SK_B, SK_C, SK_D, SK_E, SK_F, SK_G,
+ // H I J K L M N O
+ SK_H, SK_I, SK_J, SK_K, SK_L, SK_M, SK_N, SK_O,
+ // P Q R S T U V W
+ SK_P, SK_Q, SK_R, SK_S, SK_T, SK_U, SK_V, SK_W,
+ // X Y Z [ \ ] ^ _
+ SK_X, SK_Y, SK_Z, SK_F, SK_Q, SK_G, SK_3, SK_MINS,
+ // ` a b c d e f g
+ SK_7, SK_A, SK_B, SK_C, SK_D, SK_E, SK_F, SK_G,
+ // h i j k l m n o
+ SK_H, SK_I, SK_J, SK_K, SK_L, SK_M, SK_N, SK_O,
+ // p q r s t u v w
+ SK_P, SK_Q, SK_R, SK_S, SK_T, SK_U, SK_V, SK_W,
+ // x y z { | } ~ DEL
+ SK_X, SK_Y, SK_Z, SK_B, SK_W, SK_N, SK_1, KC_DEL
+};