Authors often ask whether their cover "looks professional" after noticing slow sales, a lukewarm reaction from readers, or simply a nagging doubt when they compare it with other books on the shelf. The honest answer usually is not yes or no; it is that some elements of the cover are working and others are not, and it helps to separate them out rather than judge the cover as a single impression.
This guide sets out the checks a professional cover designer would actually run through, broken into typography, hierarchy, image, genre fit, thumbnail readability, print execution and technical finish. It is a diagnostic tool for understanding what is currently true about the cover, not a prompt to redesign it; [should a cover be redesigned](/resources/book-sales-growth/should-i-redesign-my-book-cover-after-publishing) is a separate, later decision.
What "professional" actually means
A professional-looking cover is not defined by cost, minimalism, photography or illustration. Plenty of expensive covers look amateurish, and plenty of simple, inexpensive covers look entirely competent. What separates the two is whether every visible decision, the typeface, the spacing, the crop, the colour relationships, looks deliberate rather than accidental.
A reader cannot articulate most of this consciously. They register "this looks right" or "something is slightly off" within a second or two, usually without knowing why. The checks below exist to make that instinct explicit and specific, so a vague sense of unease can be traced to an actual, fixable cause, or ruled out.
Typography
Typography is one of the fastest ways a cover reveals its level of finish. It is not about which typeface is used; competent covers exist in almost every typeface family. It is about how the type is set.
Typography checks
- Kerning and letter spacing look even, with no awkward gaps or crowded letter pairs
- No more than two or three typefaces are used across the whole cover
- The typeface suits the genre and tone rather than being chosen because it was default or free
- Line breaks in the title fall in sensible places, not mid-word or mid-phrase awkwardly
- Effects such as drop shadows, bevels or outlines are used sparingly, if at all, and look intentional rather than decorative for its own sake
Hierarchy
Hierarchy is the order in which a reader’s eye is drawn across the cover: usually title, then image or mood, then author name, then any subtitle or tagline. A cover with poor hierarchy makes everything compete for attention at once, so the eye does not know where to land first.
A simple test is to glance at the cover for one second and note what was seen first. If it was not the title or the dominant image, whichever the book most needs to lead with, hierarchy is probably the issue, even if every individual element looks fine on its own.
Image
Image quality covers resolution, lighting, colour balance and whether any stock imagery has been altered enough to feel specific to this book rather than generic. Low-resolution images, visible compression artefacts, or mismatched lighting between a foreground subject and its background are common, fixable technical problems.
Example
Imagine a self-published thriller using a stock photograph of a city skyline at dusk that also appears, unaltered, on several other book covers in the same genre. The image itself is not low quality, but its lack of distinctiveness undercuts the sense that this cover was made specifically for this book.
Composition and spacing
Composition is how elements are arranged within the frame; spacing is the breathing room around and between them. Text crammed to the very edge of the cover, or images cropped so a key detail is cut off awkwardly, both read as unfinished, even if the underlying assets are good quality.
Do
- Leave consistent margins so text does not crowd the trim edge
- Align elements to a clear structure, even an informal one, rather than placing things by eye alone
- Check the cover at the exact final trim size before finalising
Avoid
- Assume more text or more visual elements will fix a cover that feels empty
- Ignore alignment because "it looks close enough"
- Finalise a composition only at screen size without checking the physical trim
Genre fit
A technically well-made cover can still look unprofessional to its intended reader if it signals the wrong genre. A literary-style muted cover on a fast-paced commercial thriller, or a cartoonish illustration on a serious memoir, both create a mismatch that reads as a mistake rather than a stylistic choice, even when the execution is competent.
Genre fit deserves its own separate diagnostic, since it is a different problem from technical execution; see how do I know if my book cover fits the genre for a fuller audit.
Thumbnail readability
Most readers encounter a cover first as a small thumbnail in search results, not as a large image on a product page. A cover that looks impressive at full size but becomes an illegible smear of colour and unreadable text at thumbnail size has a real, practical problem, regardless of how it looks in a design file.
Shrink the cover down deliberately, to roughly the size it appears in search results on a phone, and check whether the title is still legible and the genre still clear. This single test catches a surprising number of otherwise well-executed covers. See the fuller thumbnail test for a step-by-step version of this check.
Print execution
Print introduces problems an ebook cover never has to solve: bleed, trim, spine width calculated from page count, and colour that can shift between the screen and the printed page. A cover file built only for digital display, without accounting for these, often prints with visible white edges, text too close to the trim, or a spine that does not line up correctly.
If the book is available in print, order a physical proof copy and examine it under normal light before judging print execution from a screen preview alone; on-screen colour and printed colour are not the same thing.
Technical finish
Technical finish covers the small details that separate "made carefully" from "made quickly": file resolution meeting platform requirements, no visible compression artefacts, correct aspect ratio, and, for print, consistent alignment between front cover, spine and back cover text and imagery.
Where the front, spine and back of a print cover use different typefaces, misaligned brand colours, or noticeably different image quality, the inconsistency itself reads as unprofessional, even if each individual panel would pass inspection alone.
Professional cover checklist
Private worksheet
Professional cover checklist
A private, in-browser checklist to work through each area of the cover in turn. Nothing is scored, saved, or sent anywhere.
Your answers stay in this browser tab only. Nothing is scored, sent or saved to an account.
Common mistakes
- Judging the cover only at full screen size. A cover that looks fine large can fail entirely at the thumbnail size most readers actually encounter first.
- Treating "professional" as a style preference. A minimal cover is not automatically more professional than a busy one; execution and intent matter more than style.
- Fixing typography while ignoring genre fit. A technically clean cover can still mislead readers about what kind of book this is, which is a separate problem.
- Approving a print cover from a digital proof alone. Screen colour and printed colour differ; a physical proof copy is the only reliable check for print execution.
- Assuming a weak checklist result means the cover is the reason for low sales. This checklist diagnoses presentation quality; it does not by itself prove the cover is costing sales.
Frequently asked questions
Does a professional cover need to be expensive?
No. Cost and professional appearance are not the same thing; a carefully made low-cost cover can look more professional than an expensive one that skipped basic checks like thumbnail legibility.
Can a cover be professional but still wrong for the genre?
Yes. Technical execution and genre signalling are separate. A cleanly typeset, well-composed cover can still tell the wrong reader to pick it up if it signals the wrong genre.
Should I redesign my cover if it fails a few of these checks?
Not automatically. Note which specific checks fail, then read [should I redesign my book cover after publishing](/resources/book-sales-growth/should-i-redesign-my-book-cover-after-publishing) before deciding.
Is a cover unprofessional just because it uses a template?
No. Many professionally finished covers start from a template. What matters is whether the final execution, typography, spacing, image quality, has been finished carefully rather than left at default settings.
How do I know if the problem is the cover or something else on the product page?
This checklist only covers the cover itself. See our wider hub on [why a book might not be selling](/resources/book-sales-growth) for the other elements worth checking.