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diff --git a/packages/web-util/src/context/translation.ts b/packages/web-util/src/context/translation.ts
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+++ b/packages/web-util/src/context/translation.ts
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+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+import { i18n, setupI18n } from "@gnu-taler/taler-util";
+import { ComponentChildren, createContext, h, VNode } from "preact";
+import { useContext, useEffect } from "preact/hooks";
+import { useLang } from "../hooks/index.js";
+import { Locale } from "date-fns";
+import {
+  es as esLocale,
+  enGB as enLocale,
+  fr as frLocale,
+  de as deLocale
+} from "date-fns/locale"
+
+export type InternationalizationAPI = typeof i18n;
+
+interface Type {
+  lang: string;
+  supportedLang: { [id in keyof typeof supportedLang]: string };
+  changeLanguage: (l: string) => void;
+  i18n: InternationalizationAPI;
+  dateLocale: Locale,
+  completeness: { [id in keyof typeof supportedLang]: number }
+}
+
+const supportedLang = {
+  es: "Espanol [es]",
+  en: "English [en]",
+  fr: "Francais [fr]",
+  de: "Deutsch [de]",
+  sv: "Svenska [sv]",
+  it: "Italiane [it]",
+};
+
+const initial: Type = {
+  lang: "en",
+  supportedLang,
+  changeLanguage: () => {
+    // do not change anything
+  },
+  i18n,
+  dateLocale: enLocale,
+  completeness: {
+    de: 0,
+    en: 0,
+    es: 0,
+    fr: 0,
+    it: 0,
+    sv: 0,
+  }
+};
+const Context = createContext<Type>(initial);
+
+interface Props {
+  initial?: string;
+  children: ComponentChildren;
+  forceLang?: string;
+  source: Record<string, any>;
+  completeness?: Record<string, number>;
+}
+
+// Outmost UI wrapper.
+export const TranslationProvider = ({
+  initial,
+  children,
+  forceLang,
+  source,
+  completeness: completenessProp
+}: Props): VNode => {
+  const completeness = {
+    en: 100,
+    de: !completenessProp || !completenessProp["de"] ? 0 : completenessProp["de"],
+    es: !completenessProp || !completenessProp["es"] ? 0 : completenessProp["es"],
+    fr: !completenessProp || !completenessProp["fr"] ? 0 : completenessProp["fr"],
+    it: !completenessProp || !completenessProp["it"] ? 0 : completenessProp["it"],
+    sv: !completenessProp || !completenessProp["sv"] ? 0 : completenessProp["sv"],
+  }
+  const { value: lang, update: changeLanguage } = useLang(initial, completeness);
+
+  useEffect(() => {
+    if (forceLang) {
+      changeLanguage(forceLang);
+    }
+  });
+  useEffect(() => {
+    setupI18n(lang, source);
+  }, [lang]);
+  if (forceLang) {
+    setupI18n(forceLang, source);
+  } else {
+    setupI18n(lang, source);
+  }
+
+  const dateLocale = lang === "es" ? esLocale :
+    lang === "fr" ? frLocale :
+      lang === "de" ? deLocale :
+        enLocale;
+
+  return h(Context.Provider, {
+    value: { lang, changeLanguage, supportedLang, i18n, dateLocale, completeness },
+    children,
+  });
+};
+
+export const useTranslationContext = (): Type => useContext(Context);