DeepL is known as the world's most accurate machine translation service. Its translation engine is developed based on neural network artificial intelligence, and according to its disclosed professional translator blind test results, DeepL outperforms its competitors by a factor of 3: 1, and in the blind test of translation quality in English ⇄ Chinese, it is even 5 times higher than other machine translation engines.

The GPT model by OpenAI is trained on a large amount of textual data, which means it performs exceptionally well when dealing with various professional terms. It excels in understanding the context of sentences or paragraphs, and after extensive comparisons, the conclusion is that OpenAI's translation quality is currently among the best in most cases. However, due to OpenAI's core mechanism of sequentially predicting each word in a sentence, its translation speed is relatively slow. Additionally, since OpenAI is not specifically created as a translation service, it has some security limitations, such as refusing to translate paragraphs with certain negative meanings. Lastly, as it is still in its early stages, the service may sometimes be relatively less stable.

Yes, you can use Immersive Translate completely free of charge, as Immersive Translate offers the most comprehensive free package of its kind, with no restrictions on the use of any core features. And for those who wish to use DeepL, OpenAI, Claude, Gemini Translator, Immersive Translate offers a low-cost and out-of-the-box experience.

For a quick start, the following should suffice (we also have a more detailed guide here)：

1. After installation, the browser will collapse the Immersive Translate extension icon by default, so as a first step, you need to put Immersive Translate in the collapse menu in the top right corner ofbrowseras follows：
   
2. Next, you can translate the web page, take USA Today as an example, open USA Today's English web page, right click in any area, and select [Translate webpage/Display original text] button in the menu, the web page will be displayed in bilingual form. If you like shortcuts, you can press [Alt+A] (Option+A for MacOS) to trigger the webpage translation. Another way is to click the Immersive Translate icon in your browser toolbar and then click [Translate] as follows：
   
3. If you want to translate documents, such as PDF, Epub, subtitle files, etc., you can click the [Immersive Translate] icon in the browser toolbar and click [More].

Yes, we have an easy-to-join affiliate program that anyone can apply for here. Afterward, you will receive a unique promotional link. With this link, you can recommend immersive translation to your friends. If your friend upgrades to a Pro member of immersive translation within 30 days, you will receive a 20% promotional commission. At the same time, friends who purchase through your link can also enjoy a 5% discount on their first period.

Yes, we did find that there is more and higher-quality foreign language content on the internet. That's why we developed Immersive Translate. We have also compiled a list of high-quality English websites that you can explore for content that interests you. Additionally, you can follow individuals or topics of interest on popular foreign social media platforms for real-time information, such as Twitter, Reddit, Youtube, and so on.

No, it's not unlimited, but in most cases, you won't need to worry about usage limits since monthly/yearly Pro members receive a generous monthly translation allowance of up to 20 million tokens, which is designed to meet the needs of frequent webpage translation users. If you need more, you can purchase a translation quota add-on pack after reaching the limit. All customers must comply with our fair use policy - you should only use our translation services within Immersive Translate, and no customer is allowed to access our translation services through automated programs.

Pro members receive a monthly base translation allowance of 20 million tokens, which can be used across all translation services. Whether you use it all for DeepL (equivalent to 20 million characters), all for OpenAI (20 million tokens), or a combination of multiple services, you can freely allocate the allowance according to your needs. All translation services share the same unified quota calculation without the need to consider exchange rates between different services, allowing you to flexibly choose the most suitable translation service.

Yes, each account can use up to 8 devices simultaneously. If you exceed this limit, the device that was logged in first will be automatically logged out. Please note that here "devices" refer to browsers.

Currently, OpenAI uses gpt-4o-mini, Claude uses claude-3-haiku-20240307, Gemini uses gemini-1.5-pro-latest.

Yes, we have partnered with Stripe to support a monthly debit service using paypal.

Yes, we have partnered with Stripe to support credit cards issued by any of the major credit card organizations including UnionPay, this includes UnionPay, Visa, MasterCard and more.

We use Stripe to process your payment. Stripe will send invoices and receipts to your email by default. Most companies in mainland China support using Stripe receipts as reimbursement vouchers. You can consult your financial department to find out whether you can use Stripe receipts as reimbursement vouchers. If you need a general VAT invoice, please do not place an order on the official website. You can purchase a membership in our official Taobao store. After confirming receipt, you can self-service invoices in Taobao [Order] -> [More] -> [Apply for Invoice]. Click here for detailed introduction.

Yes, you can try it for free by selecting the free trial plan above (trial plans have usage limits compared to regular plans, please refer to the trial details). You can subscribe to the trial plan and cancel anytime before it expires without any charges. If you haven't canceled by the end of the trial period, your account will be automatically charged.

We have different refund policies for different subscription types and account statuses. Monthly Subscription: You can request a refund within 24 hours of your initial purchase. When applying, please provide the reason for your refund request. Annual Subscription: You can request a refund within 72 hours of your initial purchase. Your application must include the reason for your refund request. Please note that requests submitted after more than 72 hours of payment will not be refunded. For both subscription types, refunds are only possible if our translation services have not been extensively used. We will assess usage on a case-by-case basis to ensure fairness and prevent abuse of our services. If you meet the criteria for a refund, our customer support will process and notify you within 7-10 business days. However, if you have previously received a refund for our services, we reserve the right to refuse additional refund requests. Refund Process: If you believe you are eligible for a refund, please contact us at support@immersivetranslate.com. Our customer service team will review your request and guide you through the refund process.

You can click on [Billing] on your profile page, then, on the billing page, click on [Cancel Plan] to unsubscribe.

Due to Apple's restrictions on virtual services, it is currently not possible to directly purchase Immersive Translate membership in Safari. However, you can subscribe to the membership on other platforms, such as Chrome, Edge browsers, etc. Once subscribed, you can log in to your account on Safari to access the membership services.

There is indeed a significant difference in the volume of requests between web page translation and word selection translation. To address this, we innovatively adopted the technique of pre-caching popular public web pages. Simultaneously, we combined it with our optimized web page segment matching technology to ensure that costs are kept within a controllable range. Additionally, we expect that as our scale expands, we can gain more bargaining power.

If you have any other questions, please contact our customer support at support@immersivetranslate.com or pull down to the bottom of the page to join one of our user groups, such as WeChat, QQ, Telegram, etc.