Translation tools for documents, study and APIs: how to actually choose

"Which translator is best?" is the wrong question - it depends on whether you're
translating a contract, a street sign, or wiring translation into your own app.
Here's how I split it.

Whole documents (keep the formatting)

For PDFs and Office files you want layout preserved, not just raw text. A
dedicated document translation tool
beats copy-pasting into a chat box.

On the go: text and photos

For menus, signs and screenshots, photo translation
is faster than typing. Accuracy on short, context-poor strings is the real test.

Building it into a product

If you need translation inside your own software, what matters is latency and
price at volume - read the translation API cost notes
before you architect around one.

Everyday text and study

For quick lookups and vocabulary, a good translation/dictionary tool
covers most needs. If you compare options, this
tool comparison is a fair overview.

Rule of thumb

Match the tool to the unit of work: document, photo, API, or single word. Most
frustration comes from using a phrase translator for a job that needed a
document or API tool.