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---
title: i18n
slug: Mozilla/Add-ons/WebExtensions/API/i18n
tags:
- API
- Extensões
- Extensões da Web
- Extras
- Não Padrão
- Referencia
- i18n
translation_of: Mozilla/Add-ons/WebExtensions/API/i18n
---
<div>{{AddonSidebar}}</div>
<p>Funções para a internationalizar a sua extensão. Pode utilizar estas APIs para ter as suas <em>strings</em> traduzidas dos ficheiros de localização empacotados com a sua extensão, descubra o idioma atual do navegador e descubra o valor do seu <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Content_negotiation#The_Accept-Language_header">cabeçalho Accept-Language</a>.</p>
<p id="See_also">Para mais detalhes em como utilizar i18n para sua extensão, consulte:</p>
<ul>
<li><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/Internationalization">Internationalization</a>: a guide to using the WebExtension i18n system.</li>
<li><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/API/i18n/Locale-Specific_Message_reference">Locale-Specific Message reference</a>: extensions supply locale-specific strings in files called <code>messages.json</code>. This page describes the format of <code>messages.json</code>.</li>
</ul>
<h2 id="Tipos">Tipos</h2>
<dl>
<dt>{{WebExtAPIRef("i18n.LanguageCode")}}</dt>
<dd>A <a href="https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.10">language tag</a> such as <code>"en-US"</code> or "<code>fr</code>".</dd>
</dl>
<h2 id="Funções">Funções</h2>
<dl>
<dt>{{WebExtAPIRef("i18n.getAcceptLanguages()")}}</dt>
<dd>Gets the <a href="/en-US/docs/Web/HTTP/Content_negotiation#The_Accept-Language_header">accept-languages</a> of the browser. This is different from the locale used by the browser. To get the locale, use {{WebExtAPIRef('i18n.getUILanguage')}}.</dd>
<dt>{{WebExtAPIRef("i18n.getMessage()")}}</dt>
<dd>Gets the localized string for the specified message.</dd>
<dt>{{WebExtAPIRef("i18n.getUILanguage()")}}</dt>
<dd>Gets the UI language of the browser. This is different from {{WebExtAPIRef('i18n.getAcceptLanguages')}} which returns the preferred user languages.</dd>
<dt>{{WebExtAPIRef("i18n.detectLanguage()")}}</dt>
<dd>Detects the language of the provided text using the <a href="https://github.com/CLD2Owners/cld2">Compact Language Detector</a>.</dd>
</dl>
<dl>
</dl>
<h2 id="Compatibilidade_de_navegador">Compatibilidade de navegador</h2>
<p>{{Compat("webextensions.api.i18n")}}</p>
<p>{{WebExtExamples("h2")}}</p>
<dl>
</dl>
<div class="note"><strong>Agradecimentos</strong>
<p>This API is based on Chromium's <a href="https://developer.chrome.com/extensions/i18n"><code>chrome.i18n</code></a> API. This documentation is derived from <a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/i18n.json"><code>i18n.json</code></a> in the Chromium code.</p>
<p>Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.</p>
</div>
<div class="hidden">
<pre>// Copyright 2015 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</pre>
</div>
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