diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..0321eab
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,20 @@
+language: php
+sudo: false
+php:
+  - 5.6
+  - 7.0
+  - 7.1
+  - hhvm
+
+cache:
+  directories:
+    - vendor
+    - $HOME/.composer/cache
+
+before_script:
+  - composer install
+
+script: vendor/bin/phpunit --coverage-clover=coverage.xml
+
+after_script:
+  - bash -c 'if [ "$TRAVIS_PHP_VERSION" == "5.6" ] ; then php ocular.phar code-coverage:upload --format=php-clover coverage.xml; fi;'
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..525cb71
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,29 @@
+{
+  "name": "soukicz/urltolink",
+  "description": "Convert URLs in HTML to links",
+  "minimum-stability": "stable",
+  "license": "MIT",
+  "keywords": [],
+  "authors": [
+    {
+      "name": "Petr Soukup",
+      "email": "soukup@simplia.cz"
+    }
+  ],
+  "require": {
+    "php": ">=5.6.0"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "~5.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "Soukicz\\UrlToLink\\": "src/"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "Soukicz\\TestUrlToLink\\": "tests/"
+    }
+  }
+}
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..de11982
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit backupGlobals="true"
+         backupStaticAttributes="false"
+         bootstrap="./tests/bootstrap.php"
+         colors="false"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="false"
+         convertWarningsToExceptions="true"
+         forceCoversAnnotation="false"
+
+         processIsolation="false"
+         stopOnError="false"
+         stopOnFailure="false"
+         stopOnIncomplete="false"
+         stopOnSkipped="false"
+
+         testSuiteLoaderClass="PHPUnit_Runner_StandardTestSuiteLoader"
+         verbose="false">
+    <testsuites>
+        <testsuite name="Client">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <blacklist>
+            <directory>vendor</directory>
+        </blacklist>
+    </filter>
+
+</phpunit>
diff --git a/src/Processor.php b/src/Processor.php
new file mode 100644
index 0000000..b542c95
--- /dev/null
+++ b/src/Processor.php
@@ -0,0 +1,28 @@
+<?php
+namespace Soukicz\UrlToLink;
+
+class Processor {
+    /**
+     * @param string $html
+     * @return string
+     */
+    public function convertUrlToLinksInHtml($html) {
+        $html = preg_replace_callback('~(<a .*?>.*?</a>)~i', function (array $match) {
+            return '<<<a<' . base64_encode($match[0]) . '>>>>';
+        }, $html);
+
+        $html = preg_replace_callback('~(<img .*?>)~i', function (array $match) {
+            return '<<<i<' . base64_encode($match[0]) . '>>>>';
+        }, $html);
+
+        $html = preg_replace_callback('~https?://[a-z0-9/.\?&=%#\[\]_+\-]+~i', function (array $match) {
+            return '<a href="' . $match[0] . '">' . $match[0] . '</a>';
+        }, $html);
+
+        $html = preg_replace_callback('~<<<[ai]<(.*?)>>>>~', function (array $match) {
+            return base64_decode($match[1]);
+        }, $html);
+
+        return $html;
+    }
+}
diff --git a/tests/ProcessorTest.php b/tests/ProcessorTest.php
new file mode 100644
index 0000000..20daf69
--- /dev/null
+++ b/tests/ProcessorTest.php
@@ -0,0 +1,16 @@
+<?php
+namespace Soukicz\TestUrlToLink;
+
+
+use Soukicz\UrlToLink\Processor;
+
+class ProcessorTest extends \PHPUnit_Framework_TestCase {
+    function testDecodeSizes() {
+        $link = new Processor();
+
+        $this->assertEquals(
+            'abc <a href="https://www.jadi.cz/Damska-obuv/Kotnickova-obuv/Podzim-zima/?f[v][]=40&f[p][313][]=571&f[cena_do]=3170">https://www.jadi.cz/Damska-obuv/Kotnickova-obuv/Podzim-zima/?f[v][]=40&f[p][313][]=571&f[cena_do]=3170</a> def <a href="https://jadi.cz">https://jadi.cz</a>',
+            $link->convertUrlToLinksInHtml('abc https://www.jadi.cz/Damska-obuv/Kotnickova-obuv/Podzim-zima/?f[v][]=40&f[p][313][]=571&f[cena_do]=3170 def <a href="https://jadi.cz">https://jadi.cz</a>')
+        );
+    }
+}
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..4fd7610
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,12 @@
+<?php
+error_reporting(E_ALL);
+ini_set("display_errors", 1);
+if(file_exists(__DIR__ . '/../vendor/autoload.php')) {
+    // dependencies were installed via composer - this is the main project
+    $classLoader = require __DIR__ . '/../vendor/autoload.php';
+} elseif(file_exists(__DIR__ . '/../../../../../autoload.php')) {
+    // installed as a dependency in `vendor`
+    $classLoader = require __DIR__ . '/../../../../../autoload.php';
+} else {
+    throw new Exception('Can\'t find autoload.php. Did you install dependencies via composer?');
+}