Proton localization guide for volunteers

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Thank you for volunteering for the Proton Translation Community! Here are instructions on how to get started.

We’re making privacy accessible to everyone, everywhere. Step by step, we’re translating the entire Proton’s encrypted ecosystem into as many languages as possible so that everyone worldwide can access a better internet where privacy is the default in their native language.

If you wish to volunteer as well, sign up using this form(new window).


After you finish signing up and applying to all Proton product pages, a Proton Community Specialist will contact you in a message through CrowdIn to finalize your registration. Once you are registered, you can start translating!

To start translating, follow these steps:

Step 1 – Go to the product page

Open the product page you would like to contribute to and select your native language.

Step 2 – Choose what you would like to translate

Select the file you would like to translate or click Translate All to view all the strings that need a translation.

Step 3 – Translate

  1. Find a string that needs translation. Strings that have not been translated yet are marked by a red box.
  2. View the string that you selected. 
  3. Check the context and metadata to make sure your translation fits the context. CrowdIn shows you the context, as demonstrated in step 3 in the diagram below.
  4. Enter your translation.
  5. Click Save.

Step 4 – Double-check your translations

  • Apply the same formatting to your translation and do not translate variables. They must be copied so that they appear in the translated text just as they do in the source text.
  • Some strings might require several translations, which will appear as tabs in CrowdIn. When you have several tabs, you must translate all of them to complete the localization and have the text appear properly for your language.
  • Mind your language and always check your spelling and grammar. 
  • Write with style and be concise.

Voilà! Your translation is ready!

Step 5 – Review strings (for experienced translators)

Once you’ve worked on several translations with our team, you can help us evaluate translations. This consists of:

  • Voting for the best translation or providing an alternative version
  • Reviewing strings that are marked green

Thank you again to all involved for you help!

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Irina Marcopol

Irina is one of Proton's longest-serving team members, charged with strengthening and growing our brand and the Proton community. With a background in visual design, events management, and digital marketing, she strongly supports the protection of private data and contributes to building a better internet for generations to come.

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