The ACEworld Publishing Toolkit is a free collection of essential publishing tools for authors and self-publishers to publish smarter...

Publishing a book shouldn’t be complicated or expensive. The ACEworld Publishing Toolkit is a free collection of essential publishing tools designed for authors and self-publishers at every stage of the book journey. Whether you’re preparing your first manuscript or managing multiple titles, these tools help you make informed publishing decisions with confidence.

ISBN Validator & Converter

The ISBN Validator tool checks the validity of an ISBN-13 number by verifying that the number has exactly 13 digits, calculating a check digit based on the first 12 digits and comparing the calculated check digit with the last digit of the input number. If the check digit matches, the tool displays “Valid ISBN-13 number.” Otherwise, it displays an error message. You can also further verify the validity of the number on the available portals as provided above. Be aware that verification is based on availablity of number’s record on the respective platforms & portals.

Get your Verified ISBN here.

Book Cover & Spine Calculator

Creating a book cover is more than just designing a beautiful image; it is an engineering task. To ensure your book looks perfect when printed and bound, our tool calculates three critical factors:

1. The Spine Width (The Thickness): The spine is the most variable part of a book. Its width is determined by the.Page Count and the Paper PPI.(Pages Per Inch).

2. The Bleed (The Safety Buffer): Printers print on large sheets of paper and then trim them down to your book’s size. Because the blades can shift by a fraction of a millimeter, we add “Bleed” to every outer edge.

• This tool automatically adds the bleed to the top, bottom, and sides of your total layout.
• Important:.Your background color or image must extend all the way to this outer edge to avoid thin white lines after trimming.

3. The Full Spread (Total Width) To create a single file for your cover, you must account for the back cover, the spine, and the front cover as one continuous image.

Why use this tool?

• Professional Finish: Ensure your spine text is perfectly centered and doesn’t “wrap” onto the front cover.
• Avoid Rejection: Automated systems at KDP and IngramSpark will reject files that are even $0.01\text{“}$ off.
• Designer-Ready: Copy and paste the exact dimensions directly into Canva, Photoshop, or InDesign.

Get your Professional Book Cover.

Book Metadata Generatorr

Get Professional Book Metadata in 3 Simple Steps

1. Input Your Book Details: Enter your book title, genre, and a brief summary. Our AI works best when you provide a clear overview of your story or core message.
2. Select Your Tone & Audience: Whether you need a Professional tone for a business book or an Emotional tone for a romance novel, you can customize the output to resonate with your specific target readers.
3. Generate & Copy Your Report: In seconds, ACEworld AI analyzes your data to produce three versions of your book description, high-traffic SEO keywords for Amazon/KDP, relevant BISAC categories, and catchy subtitle suggestions.

1. Disclaimer of Warranties

The ACEworld Publishing Toolkit (the "Toolkit") and all its individual components—including but not limited to the ISBN Validators, Metadata Generators, and Cover Calculators—are provided on an "as is" and "as available" basis without warranties of any kind, either express or implied.

By using the Toolkit, you acknowledge that:

• Informational Purpose: The Toolkit is intended for general informational purposes only and does not constitute legal, professional, or publishing advice.

• No Guarantee of Results: We do not warrant that the results provided by the tools are 100% accurate, complete, or error-free. The reliability of the output depends heavily on the quality of the user’s input data.

• Third-Party Integration: Certain tools may utilize third-party APIs or external resources. We are not responsible for the availability or accuracy of these external services.

2. Limitation of Liability

In no event shall ACEworld PGS, its developers, maintainers, or affiliates be liable for any direct, indirect, incidental, special, or consequential damages (including, but not limited to, printing costs, loss of revenue, or retail listing errors) arising out of the use or inability to use the Toolkit.

Important Note: Users are strongly advised to manually verify all calculations and metadata before committing to large-scale printing or official book registration.

3. Intellectual Property Rights

All components of the Toolkit, including source code, design elements, algorithms, and documentation, are the property of ACEworld PGS and are protected by international intellectual property laws.

• Authorized Use:You are granted a non-exclusive license to use these tools for personal or professional publishing projects.

• Prohibited Actions: Unauthorized reproduction, reverse engineering, or distribution of the Toolkit’s code or logic is strictly prohibited and may result in civil and criminal penalties.

4. Credits & Attributions

• Barcode Functionality: Barcode generation features are powered by or credited to the Online Barcode Generator.

• Data Sources: ISBN validation logic follows standard ISO 2108 guidelines.

5. Modification of Service

ACEworld PGS reserves the right to modify, suspend, or discontinue any part of the Toolkit at any time without prior notice.

Privacy Policy & Data Handling

1. Data Collection & Usage

The ACEworld Publishing Toolkit is designed with a "privacy-first" approach. Input Data: Any data entered into our tools (ISBNs, book titles, author names, or dimensions) is processed locally or via secure server-side scripts solely to generate the requested output. Non-Storage Policy: We do not store, harvest, or sell the ISBNs or metadata you process. Once you close your browser session, the input data is cleared.

2. Cookies & Analytics

We use standard website analytics (such as Google Analytics) to track general usage patterns (e.g., which tool is most popular). This data is anonymized and does not include the specific book data you enter into the tools.

3. Third-Party Links

Our toolkit may contain links to external sites (e.g., the Pricing Calculator or Paystack for Pro access). We are not responsible for the privacy practices or content of these third-party websites.

4. Security

We implement industry-standard security measures to protect the integrity of the toolkit. However, users are responsible for ensuring they are accessing the toolkit via our official domain (aceworldpgs.com) to avoid phishing attempts.