diff --git a/README.md b/README.md
index 55da5ce..2412c13 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,8 @@
 
 ## What is Regular Expression?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > A regular expression is a group of characters or symbols which is used to find a specific pattern in a text.
 
 A regular expression is a pattern that is matched against a subject string from
diff --git a/translations/README-cn.md b/translations/README-cn.md
index 977e813..c29158a 100644
--- a/translations/README-cn.md
+++ b/translations/README-cn.md
@@ -34,6 +34,8 @@
 
 ## 什么是正则表达式？
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > 正则表达式是一组由字母和符号组成的特殊文本，它可以用来从文本中找出满足你想要的格式的句子。
 
 一个正则表达式是一种从左到右匹配主体字符串的模式。
diff --git a/translations/README-de.md b/translations/README-de.md
index b888c80..c2c179f 100644
--- a/translations/README-de.md
+++ b/translations/README-de.md
@@ -24,6 +24,8 @@
 
 ## Was sind Reguläre Ausdrücke?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Ein regulärer Ausdruck ist eine Gruppe von Buchstaben und Symbolen, die benutzt werden um ein bestimmtes Muster in einem Text zu finden.
 Ein regulärer Ausdruch ist ein Muster, das mit einem zu durchsuchenden Text von links nach rechts abgeglichen wird. Die Bezeichnung
 "Regulärer Ausdruck" ist in der Praxis unüblich und stattdessen wird häufig die Englische Abkürzung "Regex" oder "RegExp" (*regular expression*) verwendet. Reguläre
diff --git a/translations/README-es.md b/translations/README-es.md
index 366b209..907f9a1 100644
--- a/translations/README-es.md
+++ b/translations/README-es.md
@@ -34,6 +34,8 @@
 
 ## Qué es una expresión regular?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Una expresión regular es un grupo de caracteres o símbolos, los cuales son usados para buscar un patrón específico dentro de un texto.
 
 Una expresión regular es un patrón que que se compara con una cadena de caracteres de izquierda a derecha. La palabra "expresión regular" puede también ser escrita como "Regex" o "Regexp". Las expresiones regulares se utilizan para reemplazar un texto dentro de una cadena de caracteres (*string*), validar formularios, extraer una porción de una cadena de caracteres (*substring*) basado en la coincidencia de una patrón, y muchas cosas más.
diff --git a/translations/README-fa.md b/translations/README-fa.md
index c95869a..5595d45 100644
--- a/translations/README-fa.md
+++ b/translations/README-fa.md
@@ -35,6 +35,9 @@
 
 ## عبارت منظم چیست؟
 </div>
+
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 <div dir="rtl">
 
 > عبارت منظم یک گروه از کارکترها یا نمادهاست که برای پیدا کردن یک الگوی مشخص در یک متن به کار گرفته می شود.
diff --git a/translations/README-fr.md b/translations/README-fr.md
index c51668c..4601616 100644
--- a/translations/README-fr.md
+++ b/translations/README-fr.md
@@ -34,6 +34,8 @@
 
 ## Qu'est-ce qu'une expression régulière?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Une expression régulière est un groupement de caractères ou symboles utilisés pour trouver un schéma spécifique dans un texte.
 
 Une expression régulière est un schéma qui est comparé à une chaîne de caractères (string) de gauche à droite. Le mot "Expression régulière"
diff --git a/translations/README-gr.md b/translations/README-gr.md
index 2e6dd9d..763bd8f 100644
--- a/translations/README-gr.md
+++ b/translations/README-gr.md
@@ -34,6 +34,8 @@
 
 ## Τι είναι μια Κανονική Έκφραση (Regular Expression);
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Μια κανονική έκφραση είναι μια ομάδα χαρακτήρων ή συμβόλων που χρησιμοποιούνται για την εύρεση ενός συγκεκριμένου μοτίβου χαρακτήρων μέσα σ'ένα κείμενο.
 
 Μια κανονική έκφραση, είναι μια σειρά χαρακτήρων τους οποίους αναζητούμε μέσα σε ένα κείμενο. Η αναζήτηση αυτή
diff --git a/translations/README-hu.md b/translations/README-hu.md
index e8c5239..16a6804 100644
--- a/translations/README-hu.md
+++ b/translations/README-hu.md
@@ -34,6 +34,8 @@
 
 ## Mi az a reguláris kifejezés?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > A reguláris kifejezés karakterek vagy szimbólumok egy csoportja, amelyet egy szövegből adott minták megtalálására használnak.
 
 A reguláris kifejezés egy olyan minta, amely illeszkedik egy adott karakterláncra
diff --git a/translations/README-ja.md b/translations/README-ja.md
index 6acf9ae..308b639 100644
--- a/translations/README-ja.md
+++ b/translations/README-ja.md
@@ -34,6 +34,8 @@
 
 ## 正規表現とは
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > 正規表現とは文中からある文字列のパターンを見つけるために使用される文字列や記号の組み合わせのことです。
 
 正規表現とは対象の文字列に左から右にマッチするパターンのことを言います。
diff --git a/translations/README-ko.md b/translations/README-ko.md
index 6d29495..e210de4 100644
--- a/translations/README-ko.md
+++ b/translations/README-ko.md
@@ -34,6 +34,8 @@
 
 ## 정규표현식이란 무엇인가?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > 정규표현식은 텍스트에서 특정 패턴을 찾아내는데 사용되는 문자 혹은 기호들의 집합이다.
 
 정규표현식(Regular expression)은 대상 문자열에 왼쪽에서 오른쪽 방향으로 매칭되는 하나의 패턴이다. "Regular expression"이라고 매번 발음하기 어렵기 때문에, 보통 약어로 "regex" 혹은 "regexp", "정규식"으로 축약되어 사용된다. 정규 표현식은 문자열 내부의 텍스트 대체, 포맷의 유효성 검사, 패턴 매칭을 기반으로한 문자열에서 일부 텍스트를 추출, 그리고 그 외에 다양한 목적을 위해 사용된다.
diff --git a/translations/README-pl.md b/translations/README-pl.md
index fd1d04c..13f1e9a 100644
--- a/translations/README-pl.md
+++ b/translations/README-pl.md
@@ -34,6 +34,8 @@
 
 ## Co to jest wyrażenie regularne?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Wyrażenie regularne to grupa znaków lub symboli, które służą do odnalezienia określonego wzoru w tekście.
 
 Wyrażenie regularne to wzorzec, który jest dopasowywany do tekstu od lewej
diff --git a/translations/README-pt_BR.md b/translations/README-pt_BR.md
index 1c8e474..68db0e1 100644
--- a/translations/README-pt_BR.md
+++ b/translations/README-pt_BR.md
@@ -34,6 +34,8 @@
 
 ## O que é uma Expressão Regular?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Expressão Regular é um grupo de caracteres ou símbolos utilizado para encontrar um padrão específico a partir de um texto.
 
 Uma expressão regular é um padrão que é comparado com uma cadeia de caracteres da esquerda para a direita. O termo "Expressão regular" é longo e difícil de falar; você geralmente vai encontrar o termo abreviado como "regex" ou "regexp". Expressões regulares são usadas para substituir um texto dentro de uma string, validar formulários, extrair uma parte de uma string baseada em um padrão encontrado e muito mais.
diff --git a/translations/README-ru.md b/translations/README-ru.md
index 614d9eb..d76116c 100644
--- a/translations/README-ru.md
+++ b/translations/README-ru.md
@@ -33,6 +33,8 @@
 
 ## Что такое Регулярное выражение?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Регулярное выражение - это группа букв или символов, которая используется для поиска определенного шаблона в тексте.
 
 Регулярное выражение - это шаблон, сопоставляемый с искомой строкой слева направо.
diff --git a/translations/README-tr.md b/translations/README-tr.md
index 41be9dd..f3a3967 100644
--- a/translations/README-tr.md
+++ b/translations/README-tr.md
@@ -34,6 +34,8 @@
 
 ## Düzenli İfade Nedir?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Düzenli ifade, bir metinden belirli bir deseni bulmak için kullanılan bir karakter veya sembol grubudur.
 
 Bir düzenli ifade soldan sağa söz konusu harf öbekleriyle eşleşen bir desendir.
diff --git a/translations/README-vn.md b/translations/README-vn.md
index 0c38faa..c6d15f8 100644
--- a/translations/README-vn.md
+++ b/translations/README-vn.md
@@ -36,6 +36,8 @@
 
 ## Biểu thức chính quy là gì?
 
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
+
 > Biểu thức chính quy là một nhóm các ký tự hoặc ký hiệu được sử dụng để tìm một mẫu cụ thể từ một văn bản.
 
 Biểu thức chính quy là một khuôn mẫu được khớp với chuỗi các từ, từ trái sang phải. Từ "Biểu thức chính quy" là một câu cửa miệng, bạn thường sẽ tìm thấy thuật ngữ viết tắt là "regex" hoặc "regexp". Biểu thức chính quy được sử dụng để thay thế một văn bản trong một chuỗi, xác thực mẫu, trích xuất một chuỗi con từ một chuỗi dựa trên khớp mẫu và hơn thế nữa.
diff --git a/translations/README-zh-simple.md b/translations/README-zh-simple.md
index 292e877..f591052 100644
--- a/translations/README-zh-simple.md
+++ b/translations/README-zh-simple.md
@@ -32,6 +32,8 @@
 * [فارسی](../translations/README-fa.md)
 
 ## 什么是正则表达式?
+
+[![](https://img.shields.io/badge/-Download%20PDF%20-0a0a0a.svg?style=flat&colorA=0a0a0a)](https://gum.co/learn-regex)
  
 > 正则表达式是一组由字母和符号组成的特殊文本, 它可以用来从文本中找出满足你想要的格式的句子.