diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index 4c8f25d..cf1e7bf 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -1,10 +1,16 @@
 {
+  "command": {
+    "active": "Add thesaurus tags to active file"
+  },
   "error": {
     "csv": {
       "columns": "The columns doesn't correspond with the settings.",
       "header": "You can have only two column in your thesaurus. You have: {{- len}} columns.",
       "malformed": "Your CSV is malformed: {{- len}} columns found.",
       "separator": "The specified separator is invalid. You seems to use \"{{- sep}}\" as separator."
+    },
+    "file": {
+      "empty": "The file {{- file}} is empty!"
     }
   },
   "settings": {
@@ -19,11 +25,11 @@
       },
       "title": "Column title"
     },
-    "excludedPath": {
-      "desc": "Exclude files in theses paths when using the global command. ",
+    "includedPaths": {
+      "desc": "Includes files from its paths when using the global command.",
       "regex": "Regex are supported.",
       "separate": "Separate paths with coma, semicolon, spaces or newlines.",
-      "title": "Excluded path"
+      "title": "Included paths"
     },
     "separator": {
       "desc": "CSV column separator.",
@@ -38,5 +44,9 @@
       "title": "Thesaurus",
       "verify": "Verify validity of the file"
     }
+  },
+  "success": {
+    "none": "No tag to add!",
+    "title": "The tags has been added:"
   }
 }
\ No newline at end of file
diff --git a/src/i18n/locales/fr.json b/src/i18n/locales/fr.json
index d1c909d..0663e69 100644
--- a/src/i18n/locales/fr.json
+++ b/src/i18n/locales/fr.json
@@ -1,10 +1,16 @@
 {
+  "command": {
+    "active": "Ajouter les tags du thésaurus au fichier actif"
+  },
   "error": {
     "csv": {
       "columns": "Les colonnes du CSV fourni ne correspondent pas avec les colonnes des paramètres.",
       "header": "Vous ne pouvez avoir que deux colonnes dans votre thésaurus. Vous avez {{- len}} colonnes.",
       "malformed": "Votre CSV est mal formé : {{- len}} colonnes trouvées.",
       "separator": "Le séparateur spécifié n'est pas le bon. Vous semblez utiliser \"{{- sep}}\" comme séparateur."
+    },
+    "file": {
+      "empty": "Le fichier {{- file}} est vide !"
     }
   },
   "settings": {
@@ -19,11 +25,11 @@
       },
       "title": "Titre des colonnes"
     },
-    "excludedPath": {
-      "desc": "Exclus les fichiers depuis ses chemins lors d'utilisation de la commande globale.",
+    "includedPaths": {
+      "desc": "Inclus les fichiers depuis ses chemins lors d'utilisation de la commande globale.",
       "regex": "Les expressions régulières sont supportées.",
-      "separate": "Séparer les chemins par une virgule, point virgule, un espace ou un retour à la ligne.",
-      "title": "Fichier exclus"
+      "separate": "Séparer les chemins par une virgule, point virgule ou un retour à la ligne.",
+      "title": "Chemins inclus"
     },
     "separator": {
       "desc": "Séparateur des colonnes du fichier CSV.",
@@ -38,5 +44,9 @@
       "title": "Thesaurus",
       "verify": "Verifier la validité du fichier"
     }
+  },
+  "success": {
+    "none": "Aucun tag à ajouter !",
+    "title": "Les tags suivants ont bien été ajoutés :"
   }
 }
\ No newline at end of file
diff --git a/src/interfaces.ts b/src/interfaces.ts
index ff59884..1324aef 100644
--- a/src/interfaces.ts
+++ b/src/interfaces.ts
@@ -2,7 +2,7 @@ import type { TFunction } from "i18next";
 
 export interface MyThesaurusSettings {
 	thesaurusPath: string;
-	excludedPath: string[];
+	includedPaths: string[];
 	separator: Separator;
 	columns: ColumnName;
 }
@@ -19,7 +19,7 @@ export type Translation = TFunction<"translation", undefined>;
 
 export const DEFAULT_SETTINGS: MyThesaurusSettings = {
 	thesaurusPath: "",
-	excludedPath: [],
+	includedPaths: [],
 	separator: ";",
 	columns: {
 		term: "term",
diff --git a/src/main.ts b/src/main.ts
index 29fa9c5..098871f 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,14 +1,55 @@
 import i18next from "i18next";
-import { Plugin } from "obsidian";
+import { Notice, Plugin, type TFile, sanitizeHTMLToDom } from "obsidian";
 import { resources, translationLanguage } from "./i18n";
 
 import { DEFAULT_SETTINGS, type MyThesaurusSettings } from "./interfaces";
 import { MyThesaurusSettingTab } from "./settings";
 import "uniformize";
+import { getTags, getThesaurus } from "./utils";
 
 export default class MyThesaurus extends Plugin {
 	settings!: MyThesaurusSettings;
 
+	async addTagsToNote(tags: string[], file: TFile) {
+		const currentTags = this.app.metadataCache.getFileCache(file)?.tags || [];
+		const newTags = [...new Set([...currentTags, ...tags])];
+		if (newTags.length === 0) return;
+		await this.app.fileManager.processFrontMatter(file, (frontmatter) => {
+			frontmatter.tags = newTags;
+		});
+	}
+
+	async parseFile(file: TFile) {
+		const contents = await this.app.vault.read(file);
+		const thesaurusFile = this.app.vault.getAbstractFileByPath(
+			this.settings.thesaurusPath
+		) as TFile;
+		const thesaurusContents = await this.app.vault.read(thesaurusFile);
+		if (contents.length === 0) {
+			new Notice(i18next.t("error.file.empty", { file: file.name }));
+		}
+		try {
+			const thesaurus = getThesaurus(
+				thesaurusContents,
+				this.settings.separator,
+				i18next.t,
+				this.settings.columns
+			);
+			const tags = getTags(contents, thesaurus);
+			if (tags.length > 0) {
+				await this.addTagsToNote(tags, file);
+				const successMsg = sanitizeHTMLToDom(
+					`<p>${i18next.t("success.title")}</p><ul>${tags.map((tag) => `<li>${tag}</li>`)}</ul>`
+				);
+				new Notice(successMsg);
+			} else {
+				new Notice(i18next.t("success.none"));
+			}
+		} catch (error) {
+			new Notice((error as Error).message);
+		}
+	}
+
 	async onload() {
 		console.log(`[${this.manifest.name}] Loaded`);
 		await this.loadSettings();
@@ -21,6 +62,20 @@ export default class MyThesaurus extends Plugin {
 			returnEmptyString: false,
 		});
 		this.addSettingTab(new MyThesaurusSettingTab(this.app, this));
+		this.addCommand({
+			id: "parse-file",
+			name: i18next.t("command.active"),
+			checkCallback: (checking) => {
+				const file = this.app.workspace.getActiveFile();
+				if (file && file.extension == "md") {
+					if (!checking) {
+						this.parseFile(file);
+					}
+					return true;
+				}
+				return false;
+			},
+		});
 	}
 
 	onunload() {
diff --git a/src/settings.ts b/src/settings.ts
index 39f190d..94427a5 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -10,7 +10,7 @@ import {
 import type { MyThesaurusSettings, Separator } from "./interfaces";
 import type MyThesaurus from "./main";
 import { FileSuggester } from "./searchFile";
-import { verifCSV } from "./utils";
+import { getThesaurus } from "./utils";
 
 export class MyThesaurusSettingTab extends PluginSettingTab {
 	plugin: MyThesaurus;
@@ -91,7 +91,7 @@ export class MyThesaurusSettingTab extends PluginSettingTab {
 								}
 								const content = await this.app.vault.read(file);
 								try {
-									verifCSV(
+									getThesaurus(
 										content,
 										this.settings.separator,
 										i18next.t,
@@ -110,16 +110,19 @@ export class MyThesaurusSettingTab extends PluginSettingTab {
 			});
 
 		new Setting(containerEl)
-			.setName(i18next.t("settings.excludedPath.title"))
+			.setName(i18next.t("settings.includedPaths.title"))
 			.setHeading()
 			.setDesc(
 				sanitizeHTMLToDom(
-					`${i18next.t("settings.excludedPath.desc")}<br>${i18next.t("settings.excludedPath.separate")}<br>${i18next.t("settings.excludedPath.regex")}`
+					`${i18next.t("settings.includedPaths.desc")}<br>${i18next.t("settings.includedPaths.separate")}<br>${i18next.t("settings.includedPaths.regex")}`
 				)
 			)
 			.addTextArea((text) => {
-				text.setValue(this.settings.excludedPath.join("\n")).onChange(async (value) => {
-					this.settings.excludedPath = value.split(/[\n,; ]+/).map((path) => path.trim());
+				text.setValue(this.settings.includedPaths.join("\n")).onChange(async (value) => {
+					this.settings.includedPaths = value
+						.split(/[\n,;]+/)
+						.map((path) => path.trim())
+						.filter((path) => path.length > 0);
 					await this.plugin.saveSettings();
 				});
 			});
diff --git a/src/utils/index.ts b/src/utils/index.ts
new file mode 100644
index 0000000..8fdcc47
--- /dev/null
+++ b/src/utils/index.ts
@@ -0,0 +1,4 @@
+import { getThesaurus } from "./parse_csv";
+import { getTags } from "./parse_file";
+
+export { getThesaurus, getTags };
diff --git a/src/utils.ts b/src/utils/parse_csv.ts
similarity index 95%
rename from src/utils.ts
rename to src/utils/parse_csv.ts
index 7808b99..8576ced 100644
--- a/src/utils.ts
+++ b/src/utils/parse_csv.ts
@@ -1,11 +1,11 @@
-import type { ColumnName, Separator, Thesaurus, Translation } from "./interfaces";
+import type { ColumnName, Separator, Thesaurus, Translation } from "../interfaces";
 
 function verifySeparator(header: string, sep: Separator): boolean {
 	return header.includes(sep);
 }
 
 function searchSeparator(header: string): Separator {
-	return header.match(/[,;\t|]/)?.[0] as Separator;
+	return header.match(/[,;\t\|]/)?.[0] as Separator;
 }
 
 function getColumn(
@@ -33,7 +33,7 @@ function getColumn(
 	return { indexKey, indexSynonyms };
 }
 
-export function verifCSV(
+export function getThesaurus(
 	fileContent: string,
 	separator: Separator,
 	ln: Translation,
diff --git a/src/utils/parse_file.ts b/src/utils/parse_file.ts
new file mode 100644
index 0000000..ba0e037
--- /dev/null
+++ b/src/utils/parse_file.ts
@@ -0,0 +1,14 @@
+import type { Thesaurus } from "../interfaces";
+
+export function getTags(content: string, thesaurus: Thesaurus) {
+	const tagsToAdd: string[] = [];
+
+	for (const tags of Object.keys(thesaurus)) {
+		const synonyms = thesaurus[tags];
+		const regex = new RegExp(`\\b(${[...synonyms].join("|")})\\b`, "gi");
+		if (regex.test(content)) {
+			tagsToAdd.push(tags);
+		}
+	}
+	return tagsToAdd;
+}