Make your book unmissable on Obooko

Posted by George

Author Toolkit: Covers That Convert, Clean Files Readers Love, And Optional Boosts

Two things get you traction fast on Obooko. A book cover readers cannot scroll past. Files that read clean on every device. This post gives you quick wins for both, then shows you where to find designers if you need help, and how to reach our full audience with an optional Boost.

1) Make Your Cover Impossible To Miss

Your cover is the click. Readers skim quickly on phones, so design book covers for thumbnail size first.

What to aim for

Big, readable title on mobile. Clean typography beats fancy fonts that blur at small sizes.
One clear focal image. Avoid collage clutter.
Strong contrast. If your background is white, add a thin border so it does not disappear on white pages.
Match genre signals. Romance, thriller, fantasy and nonfiction each have visual rules that help the right readers click you.

Review covers you love

Make a quick swipe file. Save 15 to 20 of your favourite covers in your subgenre.
Note patterns. Type placement, color, imagery, heat level signals, series branding.
Borrow structure, not art. Use what works in your genre while keeping your own voice.

Where to get help

Browse rated cover designers on Fiverr. Shortlist by portfolio match to your subgenre, then brief clearly. See Fiverr book cover designers
Before you publish, skim our quality checklist for rights, image use, and other must-knows. Obooko Quality Control
If you're generating AI book covers on Google Gemini Nano Banana use our free Gemini Watermark Remover tool to get rid of the Gemini diamond watermark (you can upscale the image too if you'd like a better quality resolution image).

2) Give Readers Clean Files In EPUB, Kindle And PDF

Most Obooko readers prefer EPUB or Kindle-compatible files, so create both. Add a PDF for those who like a printable version. If you are new to formats, this short explainer helps: Obooko ebook file formats.

Simple workflow

1) Start clean. Use real paragraph and heading styles. Insert page breaks between chapters. Build a linked table of contents.
2) Export EPUB. This is your source file for everything else.
3) Create a Kindle-compatible file (AZW3). Convert your EPUB to AZW3 in Calibre. You can also tidy metadata there.
4) Preview on more than one reader. Open the EPUB in Thorium Reader for a desktop check. Open both EPUB and AZW3 in Calibre's e-book viewer for a second look.
5) Validate the EPUB. Run EPUBCheck so it matches the official spec and avoids silent issues.

Upload tips for Obooko

Upload all three if you can: EPUB, Kindle (AZW3) and PDF. Readers like choice.
Keep file sizes lean so downloads are fast on mobile.
Insert the cover as page one inside each file so it displays nicely in reading apps.
Have a question about quality criteria? Start here: Quality Control

3) Ready To Reach Our Full Audience

Organic discovery can take you far. When you want to accelerate, pick a Boost. These packages are built to reach engaged Obooko readers.

Email Book Insertion in Monthly Newsletter. 150,000 Readers. $79 Buy Now

Get a stand-alone book tile in our monthly email to 150,000 engaged readers. We will also run an Instagram Story linking to your Obooko page.

Stand-alone tile in the monthly newsletter to 150,000 readers
Custom tile creative to showcase your book
Dedicated Instagram Story linking to your Obooko book page

Dedicated Email Blast. 25,000 Recent Readers. $349 Buy Now

Target 25,000 of our most recent readers who are actively engaging with the site.

One email campaign to 25,000 recent, engaged readers
Professionally crafted copy to highlight your book

Dedicated Email Blast. 75,000 Recent Readers. $599 Buy Now

Wider reach to a bigger slice of our active audience at an efficient price.

One email campaign to 75,000 engaged readers
Customized content showcasing your book

Book of The Week Blog Post + Social Post. $599 Buy Now

Feature your title on our blog and give it a push on our social channels.

Featured Book of the Week blog post
Dedicated social post to more than 24k followers

Dedicated Email Blast. All Readers ~ 325,000. $1,499 Buy Now

Maximum reach to our full list for a big launch or major push.

Comprehensive email blast to approximately 325,000 readers
Exclusive email design focused on your book

Questions before you book? Contact us. If you are new here, start with the $79 insertion to warm up the audience, then stack a blast when you launch your next title.

Quick Checklist To Finish Strong

Thumbnail test. Open the cover on your phone. If title or image looks muddy, simplify and increase contrast.
Export EPUB. Convert to AZW3 in Calibre. Preview in Thorium and Calibre's viewer. Validate with EPUBCheck.
Upload EPUB, AZW3 and PDF on Obooko. Add a short "Start here" note at the top of your description for new readers.
If you write in series, consider making Book 1 free on Obooko to drive read-through to paid sequels.