Titles and back-cover text get rewritten, not translated
A book's title and the text on its back are not part of the book. They are its advertisement. So when a book moves into a new language, those two should not be translated but written again for the new reader.
This is the most common mistake at the stage after translation, and also the most expensive: the book itself can be excellent and nobody will open it.
Why a literal translation of a title fails
A good title works because of things that do not travel between languages. Sound. Wordplay. A familiar phrase bent out of shape. A nod to a song everybody knows.
Translate it word for word and the meaning survives while the effect disappears. You are left with a correct string of words nobody remembers and nothing in it that makes a hand stop.
There are worse cases, where the translated title does say something — just not what you intended. A phrase that sounds ordinary in one language can sound clumsy, childish or funny in another, and you will not know unless somebody tells you.
What to do instead
Treat it as writing a new title for the book, with one constraint: it has to promise the same thing the original promised.
In practice it looks like this. You explain in one sentence what the book is, and in a second sentence who the reader is who should love it. Whoever writes in the target language proposes several options, and you choose.
Do not be tempted to pick whichever sounds closest to the original to you. You are not the audience. Choose based on the explanation you get for why each option works.
And the text on the back
The same logic, on a larger scale.
Back-cover text is not a summary of the plot. Its job is to create curiosity and stop before the end. It is also the field readers actually read on the sales page, which makes it the thing that decides whether the book gets bought.
What changes between languages is not only the words but the tone. There are markets where back-cover text is written in short, dramatic sentences, and markets where a claim like that reads as overblown and invites suspicion. A translation faithful to the original tone may come out foreign in exactly the place where it needs to persuade.
Also: if the original text mentions a local prize, an author well known in your country, or a quote from a newspaper nobody abroad has heard of, that is valuable space, and it is worth replacing with something that means something to the new reader.
Who should do this
Not necessarily whoever translated the book. Translating a book and writing marketing copy are two different skills, and an excellent translator can write pale back-cover text.
What does matter: that the person reads the target language as a native and has seen books selling in it. It is a job of a few hours, which makes it one of the highest-return investments in the whole translation process.
How to check the result without knowing the language
Ask for two things.
First, a back-translation of the title and the back-cover text into your own language. Do not judge style from it — a back-translation always sounds flat. Use it only to confirm that it promises the right book and does not give away the ending.
Second, a short explanation from whoever wrote it: why this title, and what it signals to a local reader. If the explanation makes sense to you, the text is probably fine. Exactly the same principle works on the body of the book, and we wrote about it in how to review a translation you cannot read.
And if you are still at the stage before translation, it is worth making sure the file itself is tidy — how to prepare a book file before translation covers that, and our frequently asked questions cover the rest.
Frequently asked questions
Why not simply translate the book's title?
Because a title does not describe a book, it makes somebody want it. A literal translation keeps the meaning and loses exactly the thing that was doing the work: the sound, the double meaning or the cultural hint.
Am I allowed to change the title completely?
Yes, and large publishers do it all the time. The same book appears under entirely different titles in different countries, and nobody sees that as a betrayal of the original.
What is back-cover text, anyway?
The short paragraphs that appear on the back of the book and on the sales page. Their job is to make a reader decide in twenty seconds whether the book is for them. It is marketing copy, not a summary.
Who should write it?
Somebody who reads the target language fluently and understands what sells in it. It is a short job, which makes it one of the cheapest investments relative to its effect.
Can I check it without knowing the language?
Partly. Ask for a back-translation of the new text into your own language — not to judge its beauty, but to confirm it promises the right book.