diff --git a/assets/js/pages/files.vue b/assets/js/pages/files.vue
index e5523bc..967dfa0 100644
--- a/assets/js/pages/files.vue
+++ b/assets/js/pages/files.vue
@@ -15,14 +15,14 @@
         </thead>
         <tbody>
         <tr v-for="file in files">
-          <td>{{ file.fileName }}
+          <td>{{ file.file_name }}
             <p class="mb-0" v-if="file.book">
               <a class="text-decoration-none" :href="'/book/'+file.book.id">{{
                   file.book.title
                 }}</a> <a href="" class="text-decoration-none link-secondary">{{ file.book.author }}</a>
             </p>
           </td>
-          <td class="text-end">{{ formatSize(file.fileSize) }}</td>
+          <td class="text-end">{{ file.file_size_human }}</td>
           <td>{{ file.extension }}</td>
           <td><a :href="'/file/'+ file.id" class="link-secondary">download</a></td>
           <td><a :href="'/file/delete/'+file.id" @click.prevent="deleteFile(file.id)" class="link-danger">remove</a>
@@ -61,13 +61,6 @@ export default {
     deleteFile: function (fileId) {
       axios.get(window.location.origin + '/file/delete/' + fileId).then(() => this.getFiles())
     },
-    formatSize: function (bytes) {
-      if (bytes === 0) {
-        return "0.00 B";
-      }
-      const e = Math.floor(Math.log(bytes) / Math.log(1024));
-      return (bytes / Math.pow(1024, e)).toFixed(2) + ' ' + ' KMGTP'.charAt(e) + 'B';
-    },
     getFiles: function () {
       axios.get(this.getFilesEndpoint(),  {
         headers: {
diff --git a/src/Entity/Book.php b/src/Entity/Book.php
index dc2c8da..95d6398 100644
--- a/src/Entity/Book.php
+++ b/src/Entity/Book.php
@@ -2,23 +2,30 @@
 
 namespace App\Entity;
 
+use ApiPlatform\Core\Annotation\ApiFilter;
 use ApiPlatform\Core\Annotation\ApiResource;
 use ApiPlatform\Core\Annotation\ApiSubresource;
+use ApiPlatform\Core\Bridge\Doctrine\Common\Filter\SearchFilterInterface;
+use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\SearchFilter;
 use App\Repository\BookRepository;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Serializer\Annotation\Groups;
 
 #[ApiResource]
 #[ORM\Entity(repositoryClass: BookRepository::class)]
+#[ApiFilter(SearchFilter::class, properties: ['title' => SearchFilterInterface::STRATEGY_PARTIAL])]
 class Book
 {
     #[ORM\Id]
     #[ORM\GeneratedValue]
     #[ORM\Column(type: 'integer')]
+    #[Groups('file:read')]
     private $id;
 
     #[ORM\Column(type: 'string', length: 255)]
+    #[Groups('file:read')]
     private $title;
 
     #[ORM\Column(type: 'string', length: 255)]
@@ -50,6 +57,7 @@ class Book
     private $volume;
 
     #[ORM\Column(type: 'string', length: 255)]
+    #[Groups('file:read')]
     private $author;
 
     #[ORM\Column(type: 'text', nullable: true)]
diff --git a/src/Entity/File.php b/src/Entity/File.php
index a8a646e..8ba820d 100644
--- a/src/Entity/File.php
+++ b/src/Entity/File.php
@@ -5,23 +5,28 @@ namespace App\Entity;
 use ApiPlatform\Core\Annotation\ApiResource;
 use App\Repository\FileRepository;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Serializer\Annotation\Groups;
+use Symfony\Component\Serializer\Annotation\SerializedName;
 
-#[ApiResource]
+#[ApiResource(collectionOperations: ['get'], itemOperations: ['get'], denormalizationContext: ['groups' => ['file:write']], normalizationContext: ['groups' => ['file:read']])]
 #[ORM\Entity(repositoryClass: FileRepository::class)]
 class File
 {
     #[ORM\Id]
     #[ORM\GeneratedValue]
     #[ORM\Column(type: 'integer')]
+    #[Groups('file:read')]
     private $id;
 
     #[ORM\Column(type: 'string', length: 255)]
+    #[Groups('file:read')]
     private $file_name;
 
     #[ORM\Column(type: 'integer')]
     private $file_size;
 
     #[ORM\Column(type: 'string', length: 255)]
+    #[Groups('file:read')]
     private $extension;
 
     #[ORM\Column(type: 'string', length: 255)]
@@ -29,6 +34,7 @@ class File
 
     #[ORM\ManyToOne(targetEntity: Book::class, inversedBy: 'files')]
     #[ORM\JoinColumn(nullable: false)]
+    #[Groups('file:read')]
     private $book;
 
     public function getId(): ?int
@@ -53,6 +59,15 @@ class File
         return $this->file_size;
     }
 
+    #[Groups('file:read')]
+    #[SerializedName('file_size_human')]
+    public function getFileSizeHuman(): string
+    {
+        $base = log($this->file_size) / log(1024);
+        $suffix = array("B", "KB", "MB", "GB", "TB")[floor($base)];
+        return round(pow(1024, $base - floor($base)), 2) . $suffix;
+    }
+
     public function setFileSize(int $file_size): self
     {
         $this->file_size = $file_size;