A placeholder is a variable token inside a source string that is replaced by a value at runtime, such as a name, number, date, or link, and it often appears as a brace, percent sign, or numbered tag. In localization, placeholders must be preserved exactly and repositioned according to target-language grammar, because deleting or altering them can break the code or produce incorrect output.
Placeholders appear in software UI strings, error messages, email templates, and help content. Translators see them inside CAT tool segments, often protected by inline tags, and must move them to the grammatically correct position without changing their internal syntax. QA checks compare source and target placeholders to catch missing or reordered tokens.
A frequent mistake is translating the text inside a placeholder, such as changing {firstName} to {名字}, which then fails at runtime because the variable name no longer matches the code. Another error is dropping a placeholder when rewording a sentence, which produces an incomplete message or a broken UI element. Even changing placeholder order can alter meaning in languages with different case or agreement rules.
For creative and consumer content the failure mode is flatness, not inaccuracy — and flatness passes an accuracy check. Terms here also carry technical constraints (reading speed, character budgets) that are part of the brief.
Angel Translation locks terms like this into a project terminology base before expert review begins, so the same source term resolves to the same target term across every document in a submission — and stays consistent in the next revision. See the 8-step AI + expert workflow.
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