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Expert eBook Developer: Convert Inline Endnotes to EPUB3 Pop-up Footnotes (2 Files) Project Description I need a professional eBook developer to modify two (2) EPUB files (EPUB 3.0 standard). Currently, these books have endnotes placed as plain text immediately following the paragraphs. I want them converted into semantic pop-up footnotes that work on all major modern e-readers. Technical Requirements & Workflow: Semantic Tagging: You must use the <aside epub:type="footnote"> tag for the note content and the epub:type="noteref" attribute for the links in the body text. Namespace Declaration: Ensure the xmlns:epub="[login to view URL]" namespace is correctly declared in all XHTML files. Cross-Platform Compatibility: The notes must appear as pop-ups on Apple Books (iBooks), Kindle (using KF8 features), and Kobo, while maintaining a functional back-and-forth hyperlink fallback for older devices. Validation: The final files must pass EpubCheck 5.0+ with zero errors or warnings. Style Preservation: The original CSS, fonts, and layout of the books must remain untouched. Only the note structure needs modification. Specific File Info: The source files are already in EPUB 3 format. The notes are currently located within the main content files (e.g., [login to view URL]). Confidentiality & Non-Disclosure (CRITICAL) This project contains proprietary and sensitive material. By bidding, you agree to: Absolute Confidentiality: No part of the content may be shared with third parties or used for AI training. No Redistribution: Redistribution of the provided material is strictly prohibited. Data Destruction: You must delete all copies of the source and final files from your systems once the project is completed and paid. Skills Required Advanced eBook Formatting (EPUB 3) XHTML / CSS3 Kindle Create / Kindle Previewer expertise Strict adherence to Data Privacy
Project ID: 40395986
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With over a decade of experience as a full-stack developer, I have honed my skills in XHTML and CSS3, which are essential for your EPUB3 project requirements. My familiarity with Kindle Create and Kindle Previewer amplifies my competence in eBook formatting. Moreover, I assure you strict adherence to data privacy is paramount to me as well. I have worked with sensitive information before and can assure you utmost confidentiality. Embracing innovation while preserving originality is central to my development ethos – your project hinges on this balance too. By retaining the primary CSS, fonts, and layout of the books unchanged and solely tweaking the note structure keeps your eBooks' unique aesthetic intact. In conclusion with immense proficiency in JavaScript and mobile app development—crucial for this project—I guarantee the delivery of a professional solution that passes EpubCheck 5.0 without errors or warnings and an absolute deletion of project-associated files upon completion. Invest in my cross-disciplinary expertise today for impeccable results tomorrow.
€10 EUR in 1 day
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34 freelancers are bidding on average €21 EUR for this job

Hello, I checked your project "EPUB3 Pop-up Footnotes Amendment (2 eBooks)" and I already have a clear idea how to deliver this efficiently. I have solid experience in JavaScript, Mobile App Development, iPhone, eBooks, CSS3, XHTML, eBook Design, Accessibility, and I’ve worked on similar projects where I delivered high-quality, scalable, and clean solutions. Why choose me? • Strong expertise in JavaScript, Mobile App Development, iPhone, eBooks, CSS3, XHTML, eBook Design, Accessibility • Clean, optimized, and scalable code • Fast communication and daily updates • 100% focus on delivering results, not just code If needed, I can also suggest improvements to make your project even better. Let’s connect I’m ready to start right away. Best regards, Umer
€19 EUR in 1 day
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Hello, With my combined expertise in Advanced eBook Formatting (EPUB 3), XHTML/CSS3, and Kindle Create/Kindle Previewer, I'm confident about delivering the highest quality amendments your eBooks need. Having spent the last 9+ years honing my skills as a Senior Full Stack & DevOps Engineer, I specialize in developing and maintaining highly reliable systems that can handle complex tasks under heavy production workloads - a proficiency this project necessitates. I understand the pivotal nature of preserving the original CSS, fonts, and layout of the books in order to maintain uniformity and user experience. I assure you, only the note structure will be modified, ensuring the final product is an absolute reflection of your vision. My being tech-savvy across various platforms that include Apple Books (iBooks), Kindle and Kobo also ensure cross-platform compatibility for your readers, no matter their choice of e-reader. However, what sets me apart extends beyond merely technical proficiency. I respect the confidentiality and non-disclosure commitments that your project requires. Absolute confidentiality, no redistribution, and data destruction upon completion are not just requirements for me, but essential parts of my professional ethos. With me on board skillfully navigating your project with attention to detail and respect for these commitments is assured. Thanks! Chibike
€25 EUR in 4 days
2.6
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Hello. I have worked with EPUB3 structure, XHTML, and CSS before, including semantic tagging for accessibility. Quick real example. A client needed endnotes converted to pop-up footnotes for an academic ebook. I replaced plain text notes with <aside epub:type="footnote">, linked them with epub:type="noteref", added namespace declarations, and passed EpubCheck validation. The book worked on Apple Books and Kobo. I can share a sample file. First ebook will take about 3 days, second 2 days, then testing + validation 1 day. I will sign your NDA. We can talk more about your specific files. Thanks.
€8 EUR in 3 days
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Hi, I've carefully reviewed your project requirements to convert the inline endnotes in your two EPUB 3 files into semantic pop-up footnotes compatible with major e-readers like Apple Books, Kindle, and Kobo. With extensive experience in EPUB 3 formatting and XHTML, I will implement the <aside epub:type="footnote"> and epub:type="noteref" tags as specified, ensuring full and precise namespace declarations. I fully understand the importance of preserving your existing CSS, fonts, and layout while enhancing note functionality. I will also validate the final EPUBs with EpubCheck 5.0+ to guarantee error-free delivery. I respect your confidentiality terms: your content will remain secure and no data will be retained after completion. I can complete this task within 3 days, delivering updated files ready for cross-platform use without any style changes. Could you please confirm how many endnotes are typically present per book and if there are any particular styling nuances for the notes? Best regards, Fabian
€25 EUR in 1 day
2.3
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Hello, I can convert your inline endnotes into semantic EPUB3 pop-ups using <aside epub:type="footnote"> and epub:type="noteref" tags. I guarantee: Zero EpubCheck 5.0 errors. Full compatibility with Kindle, Apple Books, and Kobo. Strict adherence to your confidentiality and data destruction terms. For maximum technical efficiency, I work exclusively via text-based communication on this platform (no calls). Ready to start immediately and deliver the first file within 48 hours
€20 EUR in 3 days
2.0
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As an experienced professional in eBook formatting, I assure you I am proficient in every aspect of your project requirements. With the necessary skills in XHTML/CSS3, Kindle Create, and my strict adherence to data privacy and confidentiality, your project is safe in my hands. I have a 100% track record for meeting quality standards without compromising any proprietary information. Moreover, thanks to my diverse background in various domains such as AI development and machine learning, I possess a unique ability to approach problems creatively - thinking outside the box to deliver innovative yet practical solutions. Beyond just EPUB3 compliance with standardized semantic tagging and cross-platform compatibility for Apple Books, Kindle, and Kobo, I know how to preserve your book's original styles such as CSS and layout – giving readers an enhanced reading experience without changing what makes your book unique. Lastly, I bring an additional level of expertise through maintaining familiarity with tools like epubcheck 5.0+ ensuring that your final files are error-free. My understanding of the larger digital landscape also guarantees complete compliance with important aspects of your book – no AI training or data redistribution, absolute confidentiality at all times. Let me help make your dream a digital reality!
€19 EUR in 7 days
1.1
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Hello, I have extensive experience with EPUB3 development and have implemented semantic footnote systems using aside epub:type="footnote" tags and noteref attributes across multiple digital publishing projects. I've handled namespace declarations, cross-platform compatibility testing for Apple Books, Kindle, and Kobo, and converted inline annotations to proper pop-up footnotes. For your two files, I'd validate the existing EPUB structure first, then systematically tag each endnote while ensuring CSS styling supports pop-up rendering across all target readers. Let's discuss!
€20 EUR in 1 day
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Hello, Being a developer with a diverse skill set ranging from fixing complex issues, system analysis to automation tools, I am confident in my ability to handle your project. Over the last 10+ years, I have developed strong expertise specifically in EPUB 3 formatting and CSS3- skills which are directly aligned with your project requirements. I understand the significance of maintaining file integrity during editing. Thus, I assure you absolute confidentiality as well as data destruction post-completion. Regarding data privacy and compliance, it is a paramount aspect that I prioritize unconditionally to which I commit. Additionally, my experience with Kindle Create and Previewer will ensure cross-platform functioning that meets your specific needs for Apple Books, Kindle and Kobo. Compliance-wise, all files will be validated with EpubCheck 5.0+ to ensure a smooth reader experience. The unique strength I bring to this project is not just technical prowess but also the knack of understanding complex systems closely - an attribute needed for modifying existing EPUBs while aiming to retain original style elements. Alongside fixing bugs and analysing systems, I've mastered XHTML and CSS technologies that will prove beneficial in preserving native eBook CSS during the transition. If chosen for this project, you can rest assured of getting the best service by a seasoned professional who values Thanks!
€25 EUR in 1 day
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Hi , I reviewed your project "EPUB3 Pop-up Footnotes Amendment (2 eBooks)" and understand you need a professional design solution that clearly represents your brand. Expert eBook Developer: Convert Inline Endnotes to EPUB3 Pop-up Footnotes (2 Files) Project Description I need a professional eBook developer to modify two (2) EPUB files (EPUB 3 I specialize in graphic design, logo creation, branding, and marketing visuals with a focus on clean, modern and effective design. With 10+ years of experience, I ensure every project is handled with attention to detail and strong visual consistency. Since your project includes eBook Design, JavaScript, Mobile App Development, XHTML, CSS3, iPhone, Accessibility and eBooks, I can adapt to your style and deliver high quality results. You will get: Fast concepts within 6–12 hours Unlimited revisions All final source files (AI, PSD, EPS, PDF, PNG, JPG, SVG) Portfolio: https://www.freelancer.com/u/altafr99 Happy to discuss further.
€30 EUR in 6 days
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⭕ Hello there ⭕ As a JavaScript expert with a deep understanding of EPUB3 and eBook development, I'm the ideal fit for your project. I've been working in the industry for over 7 years now, making sure businesses like yours can automate complex tasks and processes. With that in mind, I'm more than capable of converting your inline endnotes into semantic pop-up footnotes through the <aside epub:type="footnote"> tag mechanisms you've specified, and make sure that the modified files remain compatible across all major e-reader platforms. My familiarity with XHTML/CSS3 and Kindle Create/Kindle Previewer will definitely come in handy as well. Years of experience in end-to-end product development helped me recognise the importance of preserving original CSS layouts while revamping structural elements - essential to maintain consistent reading experiences. Additionally, my strong adherence to data privacy measures guarantees that your proprietary material will be handled with utmost confidentiality, never to be used inappropriately. Lastly, proficiency in EpubCheck 5.0+ to validate your final files is something I offer without question, making certain your deliverables not only meet but exceed quality standards. I\'m keen on starting this milestone to demonstrate how every other aspect of my profile applies to this project too - clean architecture, critical attention to detail, agile methodology and client-centered communication throughout the proce Thanks! Harry
€25 EUR in 1 day
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Hey, After examining your project description, I must say - I am tailor-made for this job. With extensive experience in Advanced eBook Formatting (EPUB 3) and XHTML/CSS3, I'm a pro at managing the intricate details of an eBook structure while preserving its elegance. My prior work with Kindle Create/Previewer and an impeccable record, validated during my last project with stringent adherence to time constraints and high quality, sets me apart from other candidates. I understand the criticality of your confidentiality requirements- your data stays within our project circle and is destroyed as soon as you deem fit. Having worked on multiple payment gateways, I am familiar with handling sensitive material, keeping it secure from third parties or any unintended use. Choosing me means getting consistent dedication and personal attention throughout the project's lifecycle. Since I have prior client experience as a full-stack developer, you don't even need to worry about coordinating with various team members - I'm the one-stop solution you're looking for. Feel free to reach out now so we can get started on creating a flawless EPUB 3 reading experience! Thanks!
€8 EUR in 3 days
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Converting endnotes to EPUB3 pop-up footnotes means updating the markup with epub:type="footnote", adding JavaScript click handlers, and wiring in ARIA roles so the pop-ups work properly on iPhones and desktop readers. For 2 files, that is likely a day's work, though it depends on how many notes each book contains. I can start today. The bid is based on the post as written and will be confirmed once I see the files. Want to jump on a quick call?
€30 EUR in 2 days
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Hello, I am ready to dive into your project immediately. I’ve converted inline notes to EPUB3-compliant pop-up footnotes using proper <aside epub:type="footnote"> structures and noteref links, ensuring full compatibility across Apple Books, Kindle (KF8), and Kobo while passing EpubCheck with zero issues. I’ll preserve your existing CSS/layout exactly and implement clean backlink fallbacks so navigation works seamlessly on older readers as well. I want to discuss with you in more detail. Kind regards, Maria
€50 EUR in 1 day
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Hello, there, I am Darko. I have extensive experience in EPUB 3 eBook development and can convert your inline endnotes into fully functional pop-up footnotes using semantic <aside epub:type="footnote"> tags and epub:type="noteref" links. I will ensure cross-platform compatibility with Apple Books, Kindle, and Kobo while preserving all original CSS, fonts, and layout. The final files will validate with EpubCheck 5.0+ and I will strictly follow your confidentiality requirements. Let's discuss your project needs in more detail!
€30 EUR in 5 days
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I will convert your inline endnotes into professional EPUB 3.0 semantic pop-ups while maintaining 100% layout integrity. With deep expertise in XHTML/CSS3 and eBook accessibility, I ensure your files function flawlessly across all modern platforms. Technical Execution Plan: Semantic Tagging: I’ll implement <aside epub:type="footnote"> and epub:type="noteref" to trigger native pop-ups on Apple Books, Kindle (KF8), and Kobo. Precision Namespace: Correct xmlns:epub declaration in all XHTML headers for full standard compliance. Fallback Reliability: Robust back-and-forth hyperlinking to ensure usability on older e-readers. Zero-Error Validation: Guaranteed EpubCheck 5.0+ compliance with no warnings. Style Preservation: I perform "surgical" code edits, ensuring your original CSS, fonts, and design remain untouched. Confidentiality & Security: I strictly adhere to your NDA requirements. Your proprietary material will be processed in a local, secure environment, never used for AI training, and permanently deleted upon project completion and payment. Why Me? I specialize in high-stakes eBook formatting where technical precision and data privacy are non-negotiable. I am ready to start immediately and can provide validation logs upon delivery.
€25 EUR in 7 days
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I can handle converting your inline endnotes into clean EPUB3 pop-up footnotes across both eBooks, ensuring they work smoothly on major readers while preserving your existing styling and layout. This type of structural correction is very precise, and I’m comfortable managing it without breaking your current formatting. I’ve worked on multiple EPUB3 projects involving endnote/footnote restructuring, including academic and non-fiction titles that required strict adherence to reading-system standards and accessibility best practices. That experience helps avoid common issues like broken links, malformed anchors, and inconsistent note behavior. My approach is to first audit both EPUBs, map all existing endnotes, then implement proper EPUB3-compliant pop-up footnote markup and test in common readers (Apple Books, Kobo, etc.) before final delivery. I would love to chat more about your project! Regards
€19 EUR in 7 days
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Hey — saw your post about converting inline endnotes to EPUB3 pop-up footnotes for two eBooks. The tricky part here is keeping the pop-ups clean and tappable across different readers without breaking your existing layout or styling. Quick question before I suggest an approach: Are these EPUBs already valid EPUB3, or were they originally built as EPUB2 and then converted? I’ve done similar EPUB3 work before, setting up JS/CSS-based pop-up footnotes and cleaning up the internal linking so notes behave well on iBooks, Kindle Previewer, and other readers. If you send one of the EPUB files or a short spec, I can review it and tell you exactly what’s needed to get consistent pop-up footnotes on both.
€19 EUR in 7 days
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Hello, I have reviewed your project description and understand that you need to **convert inline endnotes into EPUB3-compliant semantic pop-up footnotes while preserving styling and ensuring cross-reader compatibility**. I have strong experience in XHTML/CSS and structured content formatting, with attention to detail for standards compliance and cross-platform behavior. I also fully respect confidentiality and will ensure secure handling and deletion of all files after completion. I can start immediately and deliver both EPUBs quickly with tested results. Best regards, Prem
€10 EUR in 7 days
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Hello, I see you need to convert inline endnotes in two EPUB3 files into semantic pop-up footnotes with full cross-reader compatibility and clean validation. I have strong experience working with structured web content using XHTML, CSS, and backend-driven systems, which translates well into EPUB architecture, including semantic tagging, validation workflows, and maintaining layout integrity. My focus on clean structure and cross-platform behavior ensures reliable rendering across environments like Apple Books, Kindle, and Kobo. I’d be a good fit because I approach this as a precise structural transformation, not just formatting. I will convert notes using proper aside footnote semantics, implement noteref links, ensure namespace consistency, and add fallback navigation while preserving your existing CSS and layout. Final files will be validated with EpubCheck to ensure zero errors. My plan is to review both EPUBs, refactor note structures safely, test across major readers, validate, and deliver clean final files with strict confidentiality handling and secure deletion after completion. Do you want the footnote numbering and IDs standardized across both files or preserved as-is? Best regards
€20 EUR in 7 days
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I’m currently pricing lower to build credibility on this platform, giving you great work for less. Your need to convert inline endnotes into semantic pop-up footnotes that work seamlessly across Apple Books, Kindle, and Kobo, while preserving style and ensuring EPUB 3 compliance, is clear and critical. I specialize in advanced EPUB 3 formatting, XHTML/CSS3, and Kindle Previewer usage, guaranteeing clean, professional, and user-friendly eBooks with integrated automated footnote functionality. While I am new to freelancer, I have tons of experience and have done other projects off site. I fully understand the importance of confidentiality and strict data privacy, ensuring your proprietary content remains secure and deleted post-project. I would love to chat more about your project! Regards, Lee-wayde
€15 EUR in 14 days
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