Translation-API.com

Translation-API.com is a developer tool. A developer-focused translation API with neural machine translation, 100+ languages, multi-target requests, glossary support, and file translation for 20+ code and markup formats. Pricing is usage-based at $15 per million characters, with a free tier for testing.

Translation-API.com is a REST-based machine translation service built for developers who need to embed multilingual text handling into software. The core endpoint accepts text, an optional source language, and one or more target languages, then returns JSON containing each translated string alongside the source text and a count of characters consumed. Neural machine translation models sit behind the service, with auto-detection for source languages and context-aware handling that aims to preserve tone across passages rather than translating sentence by sentence in isolation. The practical use case is localisation at scale. A single call can translate into several languages at once, which suits batch jobs such as localising resource files, product catalogues, or documentation. File translation covers more than 20 formats, including HTML, XML, JSON, React JSX/TSX, Vue, PHP, Python, Ruby, Go, YAML, and INI. In those files only human-readable text is replaced, so markup, code structure, and keys stay intact, which removes a common failure mode of manually copying strings in and out of a translator. Custom glossaries let teams lock down brand names, technical terms, and industry vocabulary so output stays consistent across large content sets. Developers reach the service through a plain REST API or through official SDKs for JavaScript, Python, PHP, Ruby, Go, and others; cURL examples require no installation. A playground on the site lets you test phrases against selected target languages after logging in. The infrastructure is positioned for high volume, with sub-second response targets, a global CDN, and a stated 99.9 percent uptime commitment. Compliance claims include SOC 2 and GDPR readiness, alongside enterprise SLA options. Compared with Google Translate API and DeepL API, the pitch is economic: the site lists $15 per million characters against $20 for Google and $25 for DeepL, with no setup fees, no monthly minimums, and credits that do not expire. Teams already invested in Google or DeepL ecosystems may find fewer adjacent services here, but for straightforward text and file translation the API is a lower-cost drop-in option worth benchmarking against incumbent providers.