Index: gc_lang/fr/nodejs/cli/bin/gramma-cli.js
==================================================================
--- gc_lang/fr/nodejs/cli/bin/gramma-cli.js
+++ gc_lang/fr/nodejs/cli/bin/gramma-cli.js
@@ -14,12 +14,10 @@
 https://stackoverflow.com/questions/41058569/what-is-the-difference-between-const-and-const-in-javascript
 */
 
 const argCmd = require("../lib/minimist.js")(process.argv.slice(2));
 const { performance } = require("perf_hooks");
-const path = require("path");
-const fs = require("fs");
 
 //Initialisation des messages
 const msgStart = "\x1b[31mBienvenue sur Grammalecte pour NodeJS!!!\x1b[0m\n";
 const msgPrompt = "\x1b[36mGrammaJS\x1b[33m>\x1b[0m ";
 const msgSuite = "\x1b[33m…\x1b[0m ";
@@ -417,23 +415,15 @@
             repAction[action] = repPreference[action] ? "ON" : "OFF";
         }
     }
 
     if (getArg(aArg, ["dicomain"])) {
-        let filename = sText.endsWith(".json") ? sText : sText + ".json";
-        repAction["dicomain"] = "Chargement du dictionnaire principal " + (oGrammarChecker.setMainDictionary(filename) ? "OK" : "Pas OK");
+        repAction["dicomain"] = "Chargement du dictionnaire principal " + (oGrammarChecker.setMainDictionary(sText) ? "OK" : "Pas OK");
     }
 
     if (getArg(aArg, ["dicoperso"])) {
-        let pathnormalized = path.normalize(sText);
-        if (fs.existsSync(pathnormalized)) {
-            let filename = path.basename(pathnormalized);
-            let dirname = path.dirname(pathnormalized);
-            repAction["dicoperso"] = "Chargement du dictionnaire personnel " + (oGrammarChecker.setPersonalDictionary(filename, dirname) ? "OK" : "Pas OK");
-        } else {
-            repAction["dicoperso"] = "Le fichier de dictionnaire n'existe pas.";
-        }
+        repAction["dicoperso"] = "Chargement du dictionnaire personnel " + (oGrammarChecker.setPersonalDictionary(sText) ? "OK" : "Pas OK");
     }
 
     for (const action of ["gceoption", "tfoption", "gcerule"]) {
         if (getArg(aArg, [action])) {
             let sFonction = action == "gceoption" ? "GceOption" : action == "tfoption" ? "TfOption" : "GceIgnoreRule";

Index: gc_lang/fr/nodejs/core/api.js
==================================================================
--- gc_lang/fr/nodejs/core/api.js
+++ gc_lang/fr/nodejs/core/api.js
@@ -7,10 +7,13 @@
 /* jslint esversion:6 */
 /* global require, exports, console */
 
 "use strict";
 
+const path = require("path");
+const fs = require("fs");
+
 class GrammarChecker {
     constructor(aInit, sLangCode = "fr", sContext = "Javascript") {
         this.sLangCode = sLangCode;
         this.sContext = sContext;
 
@@ -195,16 +198,47 @@
             this.load(["Graphspell"]);
         }
         return this.oSpellChecker;
     }
 
-    setMainDictionary(dictionary, sPath = "") {
-        return this.oSpellChecker.setMainDictionary(dictionary, sPath);
+    setMainDictionary(dictionary) {
+        if (typeof dictionary == "string") {
+            let pathnormalized = path.normalize(dictionary);
+            if (pathnormalized == "fr-allvars" || pathnormalized == "fr-classic" || pathnormalized == "fr-reform") {
+                pathnormalized = path.normalize(this.sPathRoot + "/graphspell/_dictionaries/" + pathnormalized);
+            }
+            pathnormalized = !pathnormalized.endsWith(".json") ? pathnormalized + ".json" : pathnormalized;
+            if (fs.existsSync(pathnormalized)) {
+                let filename = path.basename(pathnormalized);
+                let dirname = path.dirname(pathnormalized);
+                return this.oSpellChecker.setMainDictionary(filename, dirname);
+            }
+            return false;
+        }
+        //It's a valid json?
+        if (typeof dictionary !== "undefined" && dictionary.sHeader && dictionary.sHeader.startsWith("/grammalecte-fsa/")) {
+            return this.oSpellChecker.setMainDictionary(dictionary);
+        }
+        return false;
     }
 
-    setPersonalDictionary(dictionary, sPath = "", bActivate = true) {
-        return this.oSpellChecker.setPersonalDictionary(dictionary, sPath, bActivate);
+    setPersonalDictionary(dictionary, bActivate = true) {
+        if (typeof dictionary == "string") {
+            let pathnormalized = path.normalize(dictionary);
+            pathnormalized = !pathnormalized.endsWith(".json") ? pathnormalized + ".json" : pathnormalized;
+            if (fs.existsSync(pathnormalized)) {
+                let filename = path.basename(pathnormalized);
+                let dirname = path.dirname(pathnormalized);
+                return this.oSpellChecker.setPersonalDictionary(filename, dirname, bActivate);
+            }
+            return false;
+        }
+        //It's a valid json?
+        if (typeof dictionary !== "undefined" && dictionary.sHeader && dictionary.sHeader.startsWith("/grammalecte-fsa/")) {
+            return this.oSpellChecker.setPersonalDictionary(dictionary, bActivate);
+        }
+        return false;
     }
 
     spellParagraph(sText, bSuggest = true) {
         if (!this.isInit.Graphspell) {
             this.load(["Graphspell"]);