diff --git a/.gitignore b/.gitignore
index e5d75c4..114edb0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,13 +7,13 @@ docker-compose.yml
 /.vscode
 
 # Data
-data/index.md
+data/index*.md
 
 data/contacts/*
 data/cours/*
 data/projects/*
 
 # Blog
-data/blog/*.md
+data/blog/about*.md
 data/blog/posts/*
 !data/blog/posts/Makefile
diff --git a/Documentation.md b/Documentation.md
index 973b58b..2aeb917 100644
--- a/Documentation.md
+++ b/Documentation.md
@@ -145,6 +145,8 @@ Markdown file
 
 Markdown file is stored in `/app/data/index.md`
 
+> For french clients, `/app/data/index-fr.md` will be read instead.
+
 ```
 ---
 name: Option<String>
@@ -188,6 +190,8 @@ Post content
 
 The file is stored at `/app/data/blog/about.md`.
 
+> For french clients, `/app/data/blog/about-fr.md` will be read instead.
+
 ## Projects
 
 Markdown files are stored in `/app/data/projects/apps/`
@@ -214,6 +218,8 @@ files in `archive` subdirectory of `apps`.
 
 The file is stored at `/app/data/projects/about.md`.
 
+> For french clients, `/app/data/projects/about-fr.md` will be read instead.
+
 ## Contacts
 
 Markdown files are stored in `/app/data/contacts/`
@@ -254,6 +260,8 @@ For example, `socials` contact files are stored in `/app/data/contacts/socials/`
 
 The file is stored at `/app/data/contacts/about.md`.
 
+> For french clients, `/app/data/contacts/about-fr.md` will be read instead.
+
 ## Courses
 
 Markdown files are stored in `/app/data/cours/`
diff --git a/src/config.rs b/src/config.rs
index d1bec25..5058103 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -7,7 +7,7 @@ use std::{fs::File, io::Write, path::Path};
 use crate::template::Template;
 
 /// Store the configuration of config/config.toml
-#[derive(Clone, Debug, Default, Deserialize)]
+#[derive(Clone, Debug, Default, Deserialize, Hash, PartialEq, Eq)]
 pub struct FileConfiguration {
     /// http/https
     pub scheme: Option<String>,
@@ -75,14 +75,14 @@ impl FileConfiguration {
 }
 
 // Paths where files are stored
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Hash, PartialEq, Eq)]
 pub struct Locations {
     pub static_dir: String,
     pub data_dir: String,
 }
 
 /// Configuration used internally in the app
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Hash, PartialEq, Eq)]
 pub struct Config {
     /// Information given in the config file
     pub fc: FileConfiguration,
diff --git a/src/routes/blog.rs b/src/routes/blog.rs
index 0f26237..6676794 100644
--- a/src/routes/blog.rs
+++ b/src/routes/blog.rs
@@ -1,5 +1,7 @@
-use actix_web::{get, http::header::ContentType, routes, web, HttpResponse, Responder};
-use cached::proc_macro::once;
+use actix_web::{
+    get, http::header::ContentType, routes, web, HttpRequest, HttpResponse, Responder,
+};
+use cached::proc_macro::cached;
 use ramhorns::Content;
 
 use crate::{
@@ -8,14 +10,17 @@ use crate::{
     utils::{
         markdown::{File, FilePath},
         metadata::MType,
-        misc::{make_kw, read_file, Html},
+        misc::{lang, make_kw, read_file_fallback, Html, Lang},
         routes::blog::{build_rss, get_post, get_posts, Post, BLOG_DIR, MIME_TYPE_RSS, POST_DIR},
     },
 };
 
 #[get("/blog")]
-pub async fn index(config: web::Data<Config>) -> impl Responder {
-    Html(build_index(config.get_ref().to_owned()))
+pub async fn index(req: HttpRequest, config: web::Data<Config>) -> impl Responder {
+    Html(build_index(
+        config.get_ref().to_owned(),
+        lang(req.headers()),
+    ))
 }
 
 #[derive(Content, Debug)]
@@ -26,18 +31,19 @@ struct BlogIndexTemplate {
     no_posts: bool,
 }
 
-#[once(time = 60)]
-fn build_index(config: Config) -> String {
+#[cached(time = 60)]
+fn build_index(config: Config, lang: Lang) -> String {
     let blog_dir = format!("{}/{}", config.locations.data_dir, BLOG_DIR);
     let mut posts = get_posts(&format!("{blog_dir}/{POST_DIR}"));
 
     // Get about
-    let about: Option<File> = read_file(
+    let about = read_file_fallback(
         FilePath {
             base: blog_dir,
             path: "about.md".to_owned(),
         },
         MType::Generic,
+        lang,
     );
 
     // Sort from newest to oldest
diff --git a/src/routes/contact.rs b/src/routes/contact.rs
index 56c6dcb..494bf0b 100644
--- a/src/routes/contact.rs
+++ b/src/routes/contact.rs
@@ -1,5 +1,5 @@
 use actix_web::{get, routes, web, HttpRequest, Responder};
-use cached::proc_macro::once;
+use cached::proc_macro::cached;
 use ramhorns::Content;
 
 use crate::{
@@ -8,7 +8,7 @@ use crate::{
     utils::{
         markdown::{File, FilePath},
         metadata::MType,
-        misc::{make_kw, read_file, Html},
+        misc::{lang, make_kw, read_file_fallback, Html, Lang},
         routes::contact::{find_links, read, remove_paragraphs},
     },
 };
@@ -28,8 +28,8 @@ pub fn pages(cfg: &mut web::ServiceConfig) {
 }
 
 #[get("")]
-async fn page(config: web::Data<Config>) -> impl Responder {
-    Html(build_page(config.get_ref().to_owned()))
+async fn page(req: HttpRequest, config: web::Data<Config>) -> impl Responder {
+    Html(build_page(config.get_ref().to_owned(), lang(req.headers())))
 }
 
 #[routes]
@@ -78,18 +78,19 @@ struct NetworksTemplate {
     others: Vec<File>,
 }
 
-#[once(time = 60)]
-fn build_page(config: Config) -> String {
+#[cached(time = 60)]
+fn build_page(config: Config, lang: Lang) -> String {
     let contacts_dir = format!("{}/{}", config.locations.data_dir, CONTACT_DIR);
     let ext = ".md";
 
     // Get about
-    let about = read_file(
+    let about = read_file_fallback(
         FilePath {
             base: contacts_dir.clone(),
             path: "about.md".to_owned(),
         },
         MType::Generic,
+        lang,
     );
 
     let mut socials = read(&FilePath {
diff --git a/src/routes/cours.rs b/src/routes/cours.rs
index fb9bdad..ad3a711 100644
--- a/src/routes/cours.rs
+++ b/src/routes/cours.rs
@@ -60,13 +60,14 @@ fn get_content(
             path: filename.to_owned(),
         },
         MType::Cours,
+        None,
     )
 }
 
 fn build_page(info: &web::Query<PathRequest>, config: Config) -> String {
     let cours_dir = "data/cours";
 
-    let (ep, el): (_, Vec<String>) = config
+    let (ep, el): (_, Vec<_>) = config
         .fc
         .exclude_courses
         .unwrap()
diff --git a/src/routes/index.rs b/src/routes/index.rs
index 1b5855e..da16348 100644
--- a/src/routes/index.rs
+++ b/src/routes/index.rs
@@ -1,5 +1,5 @@
-use actix_web::{get, web, Responder};
-use cached::proc_macro::once;
+use actix_web::{get, web, HttpRequest, Responder};
+use cached::proc_macro::cached;
 use ramhorns::Content;
 
 use crate::{
@@ -8,13 +8,13 @@ use crate::{
     utils::{
         markdown::{File, FilePath},
         metadata::MType,
-        misc::{make_kw, read_file, Html},
+        misc::{lang, make_kw, read_file, read_file_fallback, Html, Lang},
     },
 };
 
 #[get("/")]
-pub async fn page(config: web::Data<Config>) -> impl Responder {
-    Html(build_page(config.get_ref().to_owned()))
+pub async fn page(req: HttpRequest, config: web::Data<Config>) -> impl Responder {
+    Html(build_page(config.get_ref().to_owned(), lang(req.headers())))
 }
 
 #[derive(Content, Debug)]
@@ -34,14 +34,15 @@ struct StyleAvatar {
     square: bool,
 }
 
-#[once(time = 60)]
-fn build_page(config: Config) -> String {
-    let mut file = read_file(
+#[cached(time = 60)]
+fn build_page(config: Config, lang: Lang) -> String {
+    let mut file = read_file_fallback(
         FilePath {
-            base: config.locations.data_dir,
+            base: config.locations.data_dir.clone(),
             path: "index.md".to_owned(),
         },
         MType::Index,
+        lang,
     );
 
     // Default values
@@ -77,6 +78,7 @@ fn build_page(config: Config) -> String {
                 path: "README.md".to_owned(),
             },
             MType::Generic,
+            None,
         );
     }
 
diff --git a/src/routes/portfolio.rs b/src/routes/portfolio.rs
index e0d3b49..9950eb5 100644
--- a/src/routes/portfolio.rs
+++ b/src/routes/portfolio.rs
@@ -1,5 +1,5 @@
-use actix_web::{get, web, Responder};
-use cached::proc_macro::once;
+use actix_web::{get, web, HttpRequest, Responder};
+use cached::proc_macro::cached;
 use glob::glob;
 use ramhorns::Content;
 
@@ -9,13 +9,13 @@ use crate::{
     utils::{
         markdown::{File, FilePath},
         metadata::MType,
-        misc::{make_kw, read_file, Html},
+        misc::{lang, make_kw, read_file, read_file_fallback, Html, Lang},
     },
 };
 
 #[get("/portfolio")]
-pub async fn page(config: web::Data<Config>) -> impl Responder {
-    Html(build_page(config.get_ref().to_owned()))
+pub async fn page(req: HttpRequest, config: web::Data<Config>) -> impl Responder {
+    Html(build_page(config.get_ref().to_owned(), lang(req.headers())))
 }
 
 #[derive(Content, Debug)]
@@ -29,8 +29,8 @@ struct PortfolioTemplate<'a> {
     err_msg: &'a str,
 }
 
-#[once(time = 60)]
-fn build_page(config: Config) -> String {
+#[cached(time = 60)]
+fn build_page(config: Config, lang: Lang) -> String {
     let projects_dir = format!("{}/projects", config.locations.data_dir);
     let apps_dir = FilePath {
         base: format!("{projects_dir}/apps"),
@@ -39,12 +39,13 @@ fn build_page(config: Config) -> String {
     let ext = ".md";
 
     // Get about
-    let about = read_file(
+    let about = read_file_fallback(
         FilePath {
             base: projects_dir,
             path: "about.md".to_owned(),
         },
         MType::Generic,
+        lang,
     );
 
     // Get apps
@@ -54,6 +55,7 @@ fn build_page(config: Config) -> String {
             read_file(
                 apps_dir.from(&e.unwrap().to_string_lossy()),
                 MType::Portfolio,
+                None,
             )
             .unwrap()
         })
@@ -72,6 +74,7 @@ fn build_page(config: Config) -> String {
             read_file(
                 apps_dir.from(&e.unwrap().to_string_lossy()),
                 MType::Portfolio,
+                None,
             )
             .unwrap()
         })
diff --git a/src/template.rs b/src/template.rs
index 52a4f4b..205752d 100644
--- a/src/template.rs
+++ b/src/template.rs
@@ -1,7 +1,7 @@
 use ramhorns::{Content, Ramhorns};
 
 /// Structure used in the config variable of the app
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Hash, PartialEq, Eq)]
 pub struct Template {
     /// Root directory where templates are stored
     pub directory: String,
diff --git a/src/utils/misc.rs b/src/utils/misc.rs
index dacfd8b..e267d7b 100644
--- a/src/utils/misc.rs
+++ b/src/utils/misc.rs
@@ -1,8 +1,10 @@
 use std::{fs, os::unix::fs::MetadataExt, path::Path};
 
 use actix_web::{
-    http::header::{self, ContentType, TryIntoHeaderValue},
-    http::StatusCode,
+    http::{
+        header::{self, ContentType, HeaderMap, TryIntoHeaderValue},
+        StatusCode,
+    },
     HttpRequest, HttpResponse, Responder,
 };
 use base64::{engine::general_purpose, Engine};
@@ -56,15 +58,33 @@ impl Responder for Html {
     }
 }
 
+/// Read a file localized, fallback to default file if localized file isn't found
+pub fn read_file_fallback(filename: FilePath, expected_file: MType, lang: Lang) -> Option<File> {
+    read_file(filename.clone(), expected_file, Some(lang)).or(read_file(
+        filename,
+        expected_file,
+        None,
+    ))
+}
+
 /// Read a file
-pub fn read_file(filename: FilePath, expected_file: MType) -> Option<File> {
-    reader(filename, expected_file)
+pub fn read_file(filename: FilePath, expected_file: MType, lang: Option<Lang>) -> Option<File> {
+    reader(filename, expected_file, lang.unwrap_or(Lang::English))
 }
 
 #[cached(time = 600)]
-fn reader(filename: FilePath, expected_file: MType) -> Option<File> {
-    let as_str = filename.to_string();
-    let path = Path::new(&as_str);
+fn reader(filename: FilePath, expected_file: MType, lang: Lang) -> Option<File> {
+    let as_str = match lang {
+        Lang::French => {
+            let str = filename.to_string();
+            let mut parts = str.split('.').collect::<Vec<_>>();
+            let extension = parts.pop().unwrap_or("");
+            let filename = parts.join(".");
+            &format!("{filename}-fr.{extension}")
+        }
+        Lang::English => &filename.to_string(),
+    };
+    let path = Path::new(as_str);
 
     if let Ok(metadata) = path.metadata() {
         // Taille maximale : 30M
@@ -76,12 +96,12 @@ fn reader(filename: FilePath, expected_file: MType) -> Option<File> {
     path.extension().and_then(|ext| {
         match mime_guess::from_ext(ext.to_str().unwrap_or_default()).first_or_text_plain() {
             mime if mime == mime::APPLICATION_PDF => {
-                fs::read(&as_str).map_or(None, |bytes| Some(read_pdf(bytes)))
+                fs::read(as_str).map_or(None, |bytes| Some(read_pdf(bytes)))
             }
             mime if mime.type_() == mime::IMAGE => {
-                fs::read(&as_str).map_or(None, |bytes| Some(read_img(bytes, &mime)))
+                fs::read(as_str).map_or(None, |bytes| Some(read_img(bytes, &mime)))
             }
-            _ => fs::read_to_string(&as_str).map_or(None, |text| {
+            _ => fs::read_to_string(as_str).map_or(None, |text| {
                 Some(read_md(&filename, &text, expected_file, None, true))
             }),
         }
@@ -116,3 +136,23 @@ fn read_img(data: Vec<u8>, mime: &mime::Mime) -> File {
 pub fn remove_first_letter(s: &str) -> &str {
     s.chars().next().map(|c| &s[c.len_utf8()..]).unwrap()
 }
+
+#[derive(Hash, PartialEq, Eq, Clone)]
+pub enum Lang {
+    French,
+    English,
+}
+
+/// Get the browser language
+pub fn lang(headers: &HeaderMap) -> Lang {
+    headers
+        .get("Accept-Language")
+        .and_then(|lang| lang.to_str().ok())
+        .and_then(|lang| {
+            ["fr", "fr-FR"]
+                .into_iter()
+                .any(|i| lang.contains(i))
+                .then_some(Lang::French)
+        })
+        .unwrap_or(Lang::English)
+}
diff --git a/src/utils/routes/blog.rs b/src/utils/routes/blog.rs
index 56a41df..2c48cee 100644
--- a/src/utils/routes/blog.rs
+++ b/src/utils/routes/blog.rs
@@ -51,6 +51,7 @@ impl Post {
                 path: format!("{}{ext}", self.url),
             },
             MType::Blog,
+            None,
         ) {
             self.content = Some(file.content);
         }
@@ -149,6 +150,7 @@ pub fn get_post(
             path: format!("{filename}{ext}"),
         },
         MType::Blog,
+        None,
     );
 
     let default = (
diff --git a/src/utils/routes/contact.rs b/src/utils/routes/contact.rs
index f8c58bf..c424d29 100644
--- a/src/utils/routes/contact.rs
+++ b/src/utils/routes/contact.rs
@@ -57,7 +57,14 @@ pub fn remove_paragraphs(list: &mut [File]) {
 pub fn read(path: &FilePath) -> Vec<File> {
     glob(&path.to_string())
         .unwrap()
-        .map(|e| read_file(path.from(&e.unwrap().to_string_lossy()), MType::Contact).unwrap())
+        .map(|e| {
+            read_file(
+                path.from(&e.unwrap().to_string_lossy()),
+                MType::Contact,
+                None,
+            )
+            .unwrap()
+        })
         .filter(|f| {
             !f.metadata
                 .info