Staring at a blank page after finishing a book? What makes a good book review is simple: a short summary, then honest, specific judgement that helps a reader decide whether to pick the book up.
This guide is part of our wider collection of book reviews advice for readers and independent bookshop fans.
| Item | Value |
|---|---|
| What a review is (UBC guide) | A brief summary and critical evaluation of a book |
| Main purpose (UBC guide) | Lets readers decide if the book is worth reading for them |
| Descriptive review | Summarises the book without taking a position on its quality |
| Typical length at BookBrowse | About 600 words |
| Summary-heavy split BookBrowse avoids | 90% plot summary, 10% commentary |
Figures come from the UBC library guide and the BookBrowse reviewer guide. Guidelines change, so check the sources before you rely on them.
A good review helps someone decide
The UBC library guide puts the purpose plainly: a book review is a brief summary and critical evaluation of a book that allows readers to decide if the book is worth reading for them.
That one sentence is a useful test. After reading your review, could a stranger say yes or no to the book, and explain why? If not, the review is probably too vague or too much retelling.
Summary and judgement in the right balance
The UBC guide divides reviews into descriptive and critical. Descriptive reviews focus on summarising the book without taking a position on its quality, while critical reviews add the reviewer’s evaluation.
For most readers sharing opinions, the critical kind is more useful. BookBrowse says there is little point in reviewing books the way many sources do, with 90% plot summary and 10% commentary, because that repeats the jacket description.
A workable balance looks like this:
- A few sentences that say what the book is and who it is for.
- Most of the space on what worked, what did not, and why.
- A closing line that gives a clear recommendation.
Specific beats general
“I loved it” tells a reader nothing. Specific evidence does: a scene that landed, a sentence that rang false, a chapter where the pacing sagged.
For fiction, BookBrowse says its reviews focus on analysis and opinion of the author’s prose style, character development, structure, handling of the subject matter, themes, and your experience of reading the book. That list works as a checklist for any novel.
Try asking yourself these questions as you draft:
- What did the author set out to do?
- Did the book do it, and where exactly?
- How did reading it feel, and what caused that feeling?
Quotations can help, but use them sparingly. One short line that shows the author’s style does more than a long passage, and it lets the reader judge the prose for themselves.
Comparisons to other books can also orient a reader quickly. Use them to place the book, not to replace your own opinion of it.
Context without spoilers
Plot can appear, but sparingly. BookBrowse notes that referencing plot elements is fine and setting the story into context, such as setting or time period, is a must, but plot should not be the focus.
Spoilers are the quickest way to lose a reader’s trust. If you must discuss an ending, warn people first, or describe the effect of the ending without giving it away.
Fairness and honesty
The UBC guide says book review assignments require close reading, analysis of arguments, fair and impartial critique, and clear writing. Even outside a classroom, fairness means judging the book the author actually wrote, not the one you wished they had written.
Honesty matters just as much when you did not enjoy the book. Our guide on how to write a negative book review shows how to be candid without being cruel.
Fairness also means giving the book credit where it is due. Even a disappointing read often has one thing done well, and naming it makes your criticism more believable.
Finally, be open about any connection to the book. If you received a free copy or know the author, say so, so readers can weigh your words accordingly.
Structure and length
Without a long plot retelling, structure carries more weight. BookBrowse says you will need to pay special attention to it.
On length, BookBrowse aims for about 600 words, while noting that a shorter, tightly written review is preferable to a longer rambling one. If you want a layout to follow, see our notes on book review format.
A voice readers can trust
Readers come back to reviewers whose taste they understand. Say what you usually enjoy, and your praise and complaints become easier to weigh.
A slow, quiet novel may be a joy for one reader and a chore for another. If you admit that slow pacing is not your thing, a reader who loves it can still tell the book might suit them.
Keep your tone conversational but precise. Plain words and concrete detail read better than grand claims, and they are harder to dismiss.
A quick checklist before you post
Read your draft once more as a stranger who has never heard of the book. Then run through these points:
- Does the opening line say what the book is and give a sense of your verdict?
- Have you named at least one specific strength and one specific weakness?
- Does every strong opinion come with a reason or an example?
- Have you kept spoilers out, or flagged them clearly?
- Would a reader know who might enjoy the book and who might not?
- Is every sentence earning its place?
If the answer to any of these is no, that is where to revise. Cutting a paragraph of retelling is usually the quickest improvement.
Common mistakes to avoid
Most weak reviews fail in the same few ways. Knowing them makes them easy to spot in your own writing.
- Retelling the story. The jacket copy already does this, so spend your words on judgement instead.
- Vague praise. Words like “amazing” or “boring” need a reason attached.
- Reviewing the author. Keep the focus on the pages in front of you.
- Blaming the book for your mood. If you read it distracted or in the wrong genre mood, say so honestly.
- Rambling. A tight review respects the reader’s time.
Reviews and independent bookshops
Thoughtful reviews are one of the best ways to help good books find readers, especially titles from small presses that lack big marketing budgets. A specific, honest recommendation can send someone to their local independent shop with a title in mind.
It also helps to write for the person you would meet at the shop counter: curious, short of time, and wanting a straight answer about whether this book is for them.
Frequently asked questions
Does a good review have to be positive?
Show answer
No. A good review is useful and fair. A well-argued critical review can help a reader more than praise without reasons.
How much plot should I include?
Show answer
Only enough to set the scene. BookBrowse says plot should not be the focus of the review.
How long should a book review be?
Show answer
BookBrowse aims for about 600 words but says scope should decide, and tight beats rambling.
What is the difference between descriptive and critical reviews?
Show answer
According to the UBC guide, descriptive reviews summarise without taking a position on quality, while critical reviews also evaluate the book.
