diff --git a/install.sh b/install.sh
new file mode 100644
index 0000000..498c20a
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+pip install -r requirements.txt
diff --git a/main.py b/main.py
index 3aa2dfa..51fe7fc 100644
--- a/main.py
+++ b/main.py
@@ -25,9 +25,10 @@ class DocumentSpecs(BaseModel):
     paperwidth: int
     paperheight: int
     margin: int
+    vmargin: int
     extension: str
 
-def convert_pdf_jpg(filename, output_path, resolution=300):
+def convert_pdf(filename, filetype, output_path, resolution=300):
     """ Convert a PDF into images.
 
         All the pages will give a single png file with format:
@@ -39,12 +40,12 @@ def convert_pdf_jpg(filename, output_path, resolution=300):
     all_pages = Image(filename=filename, resolution=resolution)
     for i, page in enumerate(all_pages.sequence):
         with Image(page) as img:
-            img.format = 'jpg'
+            img.format = filetype
             img.background_color = Color('black')
             #img.alpha_channel = 'remove'
 
             image_filename = os.path.splitext(os.path.basename(filename))[0]
-            image_filename = '{}-{}.jpg'.format(image_filename, i)
+            image_filename = f'{image_filename}-{i}.{filetype}'
             image_filename = os.path.join(output_path, image_filename)
 
             img.save(filename=image_filename)
@@ -70,7 +71,8 @@ async def generer(specs: DocumentSpecs):
         '-V',f'fontsize={specs.fontsize}pt',
         '-V',f'geometry:paperwidth={specs.paperwidth/300}in',
         '-V',f'geometry:paperheight={specs.paperheight/300}in',
-        '-V',f'geometry:margin={specs.margin/300}in'
+        '-V',f'geometry:margin={specs.margin/300}in',
+        '-V',f'geometry:vmargin={specs.vmargin/300}in'
     ]
     try:
         logging.info("Dossier courant = " + os.getcwd())
@@ -89,13 +91,13 @@ async def generer(specs: DocumentSpecs):
         logging.exception(rerr)
     except OSError as oerr:
         logging.exception(oerr)
-    if specs.extension=="zip":
+    if specs.extension in ["png","jpg"]:
         zip_filename = os.path.splitext(os.path.basename(output_file))[0]
         png_output_dir = "./png_output"
         if not os.path.exists(png_output_dir):
             os.mkdir(png_output_dir)
         try:
-            convert_pdf_jpg(output_file, png_output_dir, resolution=300)
+            convert_pdf(output_file, specs.extension, png_output_dir, resolution=300)
             shutil.make_archive(zip_filename, 'zip', png_output_dir)
             shutil.rmtree(png_output_dir)
         except Exception as e:
diff --git a/styles/missioncyber/instagram/header.tex b/styles/missioncyber/instagram/header.tex
index 386faa0..876b1ef 100644
--- a/styles/missioncyber/instagram/header.tex
+++ b/styles/missioncyber/instagram/header.tex
@@ -56,4 +56,8 @@
   \setsansfont[Path=font/GlacialIndifference/]{GlacialIndifference-Regular.otf}
   \setmonofont[Path=font/SourceCodePro/]{SourceCodePro-Regular.ttf}
 
-\usepackage{emoji}
\ No newline at end of file
+\usepackage{emoji}
+
+\hyphenpenalty=10000
+\hbadness=10000
+\centering
diff --git a/styles/missioncyber/linkedin/header.tex b/styles/missioncyber/linkedin/header.tex
index cd1c6f1..6d2d4ae 100644
--- a/styles/missioncyber/linkedin/header.tex
+++ b/styles/missioncyber/linkedin/header.tex
@@ -50,4 +50,9 @@
   \setsansfont[Path=font/GlacialIndifference/]{GlacialIndifference-Regular.otf}
   \setmonofont[Path=font/SourceCodePro/]{SourceCodePro-Regular.ttf}
 
-\usepackage{emoji}
\ No newline at end of file
+\usepackage{emoji}
+
+\hyphenpenalty=10000
+\hbadness=10000
+\centering
+
diff --git a/styles/missioncyber/pinterest/header.tex b/styles/missioncyber/pinterest/header.tex
index 399988b..3f03866 100644
--- a/styles/missioncyber/pinterest/header.tex
+++ b/styles/missioncyber/pinterest/header.tex
@@ -50,4 +50,8 @@
   \setsansfont[Path=font/GlacialIndifference/]{GlacialIndifference-Regular.otf}
   \setmonofont[Path=font/SourceCodePro/]{SourceCodePro-Regular.ttf}
 
-\usepackage{emoji}
\ No newline at end of file
+\usepackage{emoji}
+
+\hyphenpenalty=10000
+\hbadness=10000
+\centering
\ No newline at end of file
diff --git a/test_main.http b/test_main.http
index 7c9fa77..7fc0f39 100644
--- a/test_main.http
+++ b/test_main.http
@@ -15,7 +15,7 @@ Accept: application/zip
   "paperwidth": 1080,
   "paperheight": 1920,
   "margin": 180,
-  "extension": "zip"
+  "extension": "jpg"
 }
 
 ###
@@ -44,6 +44,27 @@ GET http://127.0.0.1:8000/generer/
 Content-Type: application/json
 Accept: application/pdf
 
+{
+  "format": "linkedin",
+  "style": "missioncyber",
+  "linkcolor": "blue",
+  "tocdepth": 2,
+  "pdfengine": "lualatex",
+  "content": "# Comment améliorer ma sécurité informatique\n\n20 défis gratuits de 2 minutes chacun !",
+  "fontsize": 20,
+  "paperwidth": 1080,
+  "paperheight": 1080,
+  "margin": 180,
+  "extension": "jpg",
+  "vmargin": 300
+}
+
+###
+
+GET http://127.0.0.1:8000/generer/
+Content-Type: application/json
+Accept: application/pdf
+
 {
   "format": "slide169",
   "style": "jevalideca",
@@ -55,5 +76,5 @@ Accept: application/pdf
   "paperwidth": 1920,
   "paperheight": 1080,
   "margin": 90,
-  "extension": "pdf"
+  "extension": "jpg"
 }