diff --git a/application/bookmark/Bookmark.php b/application/bookmark/Bookmark.php
index 4238ef25..5c85a10c 100644
--- a/application/bookmark/Bookmark.php
+++ b/application/bookmark/Bookmark.php
@@ -16,7 +16,7 @@
  *
  * @package Shaarli\Bookmark
  */
-class Bookmark
+class Bookmark implements \JsonSerializable
 {
     /** @var string Date format used in string (former ID format) */
     public const LINK_DATE_FORMAT = 'Ymd_His';
@@ -528,4 +528,20 @@ public function deleteTag(string $tag): void
             $this->tags = array_values($this->tags);
         }
     }
+
+    public function jsonSerialize()
+    {
+        return [
+            'id' => $this->id,
+            'shortUrl' => $this->shortUrl,
+            'url' => $this->url,
+            'title' => $this->title,
+            'description' => $this->description,
+            'tags' => $this->tags,
+            'sticky' => $this->sticky,
+            'created' => $this->created,
+            'updated' => $this->updated,
+            'private' => $this->private,
+        ];
+    }
 }
diff --git a/application/bookmark/BookmarkArray.php b/application/bookmark/BookmarkArray.php
index b9328116..40d04731 100644
--- a/application/bookmark/BookmarkArray.php
+++ b/application/bookmark/BookmarkArray.php
@@ -14,7 +14,7 @@
  *
  * @package Shaarli\Bookmark
  */
-class BookmarkArray implements \Iterator, \Countable, \ArrayAccess
+class BookmarkArray implements \Iterator, \Countable, \ArrayAccess, \JsonSerializable
 {
     /**
      * @var Bookmark[]
@@ -261,4 +261,9 @@ public function reorder(string $order = 'DESC', bool $ignoreSticky = false): voi
             $this->ids[$bookmark->getId()] = $key;
         }
     }
+
+    public function jsonSerialize()
+    {
+        return $this->bookmarks;
+    }
 }
diff --git a/composer.json b/composer.json
index 2563906f..a617202d 100644
--- a/composer.json
+++ b/composer.json
@@ -77,5 +77,8 @@
           "Shaarli\\Tests\\": "tests",
           "Shaarli\\Tests\\Utils\\": "tests/utils"
         }
+    },
+    "scripts": {
+        "datastore2json": "php -f datastore2json.php"
     }
 }
diff --git a/datastore2json.php b/datastore2json.php
new file mode 100644
index 00000000..5d1be93d
--- /dev/null
+++ b/datastore2json.php
@@ -0,0 +1,19 @@
+<?php
+require 'vendor/autoload.php';
+
+// Replicates https://github.com/shaarli/Shaarli/blob/master/application/bookmark/BookmarkIO.php#L72 :
+
+use Shaarli\Bookmark\BookmarkArray;
+
+if ($argv && $argv[0] && realpath($argv[0]) === __FILE__) {
+    // Code below will only be executed when this script is invoked as a CLI,
+    // not when served as a web page:
+    $phpPrefix = '<?php /* ';
+    $phpSuffix = ' */ ?>';
+    $datastore_filepath = $argc > 1 ? $argv[1] : "data/datastore.php";
+    $content = file_get_contents($datastore_filepath);
+    $links = unserialize(gzinflate(base64_decode(
+        substr($content, strlen($phpPrefix), -strlen($phpSuffix))
+    )));
+    print(json_encode($links).PHP_EOL);
+}