diff --git a/app.php b/app.php
index a1197e3..1e11a62 100644
--- a/app.php
+++ b/app.php
@@ -390,12 +390,39 @@ $f3->route('GET /metadata',
 
 $f3->route('GET /compress',
     function($f3) {
-        $f3->set('maxSize',  min(array(convertPHPSizeToBytes(ini_get('post_max_size')), convertPHPSizeToBytes(ini_get('upload_max_filesize')))));
-
         echo View::instance()->render('compress.html.php');
     }
 );
 
+$f3->route ('POST /compress',
+    function($f3) {
+        $filename = null;
+        $tmpfile = tempnam($f3->get('UPLOADS'), 'pdfsignature_sign');
+        unlink($tmpfile);
+
+        $files = Web::instance()->receive(function($file,$formFieldName) {
+            if ($formFieldName == "pdf" && strpos(Web::instance()->mime($file['tmp_name'], true), 'application/pdf') !== 0) {
+                $f3->error(403);
+            }
+        });
+
+        $arrayPath = array_keys($files);
+        $filePath = reset($arrayPath);
+        $outputFileName = str_replace(".pdf", "_compressed.pdf", $filePath);
+
+        $returnCode = shell_exec(sprintf("gs -sDEVICE=pdfwrite -dPDFSETTINGS=/screen -dQUIET -o %s %s", $outputFileName, $filePath));
+
+        if ($returnCode !== false) {
+                header('Content-Type: application/pdf');
+                header("Content-Disposition: attachment; filename=$outputFileName");
+                readfile($outputFileName);
+                unlink($outputFileName);
+            } else {
+                echo "PDF compression failed. Please try again.";
+            }
+        }
+);
+
 function getCommit() {
     if(!file_exists(__DIR__.'/.git/HEAD')) {
 
diff --git a/public/js/compress.js b/public/js/compress.js
index 32753fb..e69de29 100644
--- a/public/js/compress.js
+++ b/public/js/compress.js
@@ -1,12 +0,0 @@
-const inputFileElement = document.getElementById('input_pdf_upload');
-const compressBtn = document.getElementById('compressBtn');
-
-compressBtn.addEventListener('click', async () => {
-    const inputPdfFile = inputFileElement.files[0];
-
-    if (inputPdfFile) {
-        console.log("ping");
-    } else {
-        alert('Please select a PDF file to compress.');
-    }
-})
\ No newline at end of file
diff --git a/templates/compress.html.php b/templates/compress.html.php
index 00d0719..5134d20 100644
--- a/templates/compress.html.php
+++ b/templates/compress.html.php
@@ -44,18 +44,20 @@
             <a class="nav-link active" href="<?php echo $REVERSE_PROXY_URL; ?>/compress"> <?php echo sprintf(_("%s Compress"), '<i class="bi bi-chevron-bar-contract"></i>'); ?></a>
         </li>
     </ul>
-    <div class="px-4 py-4 text-center">
-        <h1 class="display-5 fw-bold mb-0 mt-3"> <?php echo sprintf(_("%s Compress a PDF"), '<i class="bi bi-chevron-bar-contract"></i>'); ?></h1>
-        <p class="fw-light mb-3 subtitle text-dark text-nowrap" style="overflow: hidden; text-overflow: ellipsis;"><?php echo _("Reduce the size of a PDF"); ?></p>
-        <div class="col-md-6 col-lg-5 col-xl-4 col-xxl-3 mx-auto">
+    <form method="post" action="<?php echo $REVERSE_PROXY_URL; ?>/compress" enctype="multipart/form-data">
+        <div class="px-4 py-4 text-center">
+            <h1 class="display-5 fw-bold mb-0 mt-3"> <?php echo sprintf(_("%s Compress a PDF"), '<i class="bi bi-chevron-bar-contract"></i>'); ?></h1>
+            <p class="fw-light mb-3 subtitle text-dark text-nowrap" style="overflow: hidden; text-overflow: ellipsis;"><?php echo _("Reduce the size of a PDF"); ?></p>
             <div class="col-12">
                 <label class="form-label mt-3" for="input_pdf_upload"><?php echo _("Choose a PDF"); ?></label>
-                <input id="input_pdf_upload" placeholder="<?php echo _("Choose a PDF"); ?>" class="form-control form-control-lg" type="file" accept=".pdf,application/pdf" />
+                <input name="input_pdf_upload" id="input_pdf_upload" placeholder="<?php echo _("Choose a PDF"); ?>" class="form-control form-control-lg" type="file" accept=".pdf,application/pdf" />
                 <p class="mt-2 small fw-light text-dark">&nbsp;</p>
             </div>
         </div>
-        <button id="compressBtn" class="btn btn-primary"><?php echo _("Compress"); ?></button>
-    </div>
+        <div class="col-md-6 col-lg-5 col-xl-4 col-xxl-3 mx-auto">
+            <button type="submit" id="compressBtn" class="btn btn-primary"><?php echo _("Compress"); ?></button>
+        </div>
+    </form>
     <footer class="text-center text-muted mb-2 fixed-bottom opacity-75">
         <small><?php echo _("Free open-source software"); ?> <span class="d-none d-md-inline"><?php echo _("under AGPL-3.0 license"); ?></span> : <a href="https://github.com/24eme/signaturepdf"><?php echo _("see the source code"); ?></a><?php if($COMMIT): ?> <span class="d-none d-md-inline small">[<a href="https://github.com/24eme/signaturepdf/tree/<?php echo $COMMIT ?>"><?php echo $COMMIT ?></a>]</span><?php endif; ?></small>
     </footer>
@@ -113,6 +115,6 @@
 <script>
     var defaultFields = <?php echo json_encode(isset($METADATA_DEFAULT_FIELDS) ? $METADATA_DEFAULT_FIELDS : array()); ?>;
 </script>
-    <script src="<?php echo $REVERSE_PROXY_URL; ?>/js/compress.js?<?php echo ($COMMIT) ? $COMMIT : filemtime($ROOT."/public/js/compress.js") ?>"></script>
-</body>
+<!--<script src="<?php /*echo $REVERSE_PROXY_URL; */?>/js/compress.js?<?php /*echo ($COMMIT) ? $COMMIT : filemtime($ROOT."/public/js/compress.js") */?>"></script>
+--></body>
 </html>