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My current site functions but the markup is messy. I need every page cleaned so it passes the W3C validator under the XHTML 1.0 standard—no remaining validation errors, no hidden warnings. The job is strictly about code quality; layout, design, and content stay exactly as they are. You’ll receive the existing HTML files at kickoff. Work directly in those sources, keep file names unchanged, and return fully validated pages along with a concise change log that highlights what you modified. Deliverables • Updated XHTML-compliant files that show zero errors in the W3C validator • A brief change log (txt or md) If you spot quick wins such as missing alt tags or obsolete attributes, include those fixes as part of the cleanup.
Project ID: 40568277
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163 freelancers are bidding on average $394 USD for this job

Hi, Over the years, I have honed a solid skillset in CSS, HTML, HTML5, JavaScript, and PHP - all crucial to rectifying XHTML validation errors. More so, I have a comprehensive understanding of the W3C validator requirements and standards.
$250 USD in 1 day
8.7
8.7

Hi, Could you provide me with the existing HTML files? I can clean up your markup to ensure it passes the W3C validator under the XHTML 1.0 standard without any validation errors or hidden warnings. I have extensive experience in HTML and XHTML, and I will focus solely on improving code quality while maintaining the layout and content as you requested. If I spot any quick fixes, like missing alt tags or obsolete attributes, I will address those as part of the cleanup. Upon completion, you’ll receive the validated files along with a concise change log detailing the modifications made. Let me know if you’d like to move forward! Best Regards, Priyanka
$250 USD in 2 days
8.5
8.5

As a leading website provider and developer in Pakistan, I am confident that my team at Our Software can provide the highest quality service to fix your XHTML validation errors. Our extensive experience in HTML, CSS, JavaScript and PHP allows us to effectively analyze and identify coding issues and provide the necessary solutions for a seamless W³C validation process. We understand the importance of maintaining the existing layout, design, and content of your website while making it completely XHTML compliant. This meticulous attention to detail is our specialty. Not only will we ensure that there are zero validation errors, but we will also make any necessary quick fixes such as missing alt tags or obsolete attributes during the cleanup phase. Our dedication extends beyond mere problem-solving. We believe in adding a "WOW" factor to all our projects through excellent customer service and positive feedback. By entrusting us with this project, you can be sure that we will not only meet but exceed your expectations through timely delivery of fully validated pages along with a concise change log highlighting every modification made
$250 USD in 2 days
8.6
8.6

Hello, I will clean every HTML file so each one returns zero errors and zero warnings in the W3C XHTML 1.0 validator, while keeping your layout, design, and content exactly as they are. You will also get a concise change log (md) documenting every modification per file. On a similar cleanup recently, fixing doctype declarations and self-closing tags early exposed dozens of cascading errors that disappeared in one pass. I will apply the same approach here to keep the diff minimal and reviewable. Questions: 1) How many pages (or files) are in the current set? 2) Are there any server side includes or templating (PHP, SSI) generating portions of the markup, or is everything static HTML? Share the files and I will validate the first three pages today so you can review my approach before I continue. Ready to start whenever you are. Kamran
$277 USD in 10 days
8.6
8.6

Hi! I can clean and refactor your existing HTML files to achieve full W3C XHTML 1.0 compliance while preserving the current design, layout, content, and filenames. I'll eliminate all validation errors, address quick accessibility improvements like missing alt attributes and obsolete markup, and provide a concise change log with the completed work. Thanks ! Parminder
$501 USD in 5 days
8.2
8.2

Hi, As a well-versed full stack development team leader, I'm confident in our ability to clean up your XHTML and help your website pass the W3C validator with flying colors. With our extensive experience in HTML5 and JavaScript, ensuring compliance won't be a hassle for us as we've been delivering high-quality web developments projects for over a decade now. In fact, our team has worked on numerous websites that demanded rigorous validation standards like yours. Rest assured, we're already familiar with the potential issues that may arise and how to address them. Additionally, our proficiency in PHP will come in handy when dealing with your existing HTML files as we can effortlessly implement any quick fixes for missing atl tags or obsolete attributes. Given our strong emphasis on code quality, you can expect to receive fully validated pages free of any error from us. Moreover, we understand the significance of transparency and documentation in a project like this. So we will not only deliver the updated XHTML compliant files, but also provide a detailed change log highlighting all the modifications we made. This way you can easily keep track of all changes and be absolutely assured that the final output adheres perfectly to XHTML 1.0 standards. Thanks.....
$500 USD in 7 days
8.1
8.1

⭐⭐⭐⭐⭐ Clean Up HTML Markup for W3C Validation Compliance ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project needs and noticed you're looking for someone to clean up your site's HTML markup. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed over 50 similar projects focused on HTML validation. I will ensure every page passes the W3C validator under the XHTML 1.0 standard without any errors or warnings. ➡️ Why Me? I can easily clean up your HTML pages as I have 5 years of experience in web development, specializing in HTML and XHTML standards. My expertise includes code optimization, error fixing, and markup validation. Additionally, I have a strong grip on CSS and JavaScript, which will help ensure your site remains functional and visually appealing. ➡️ Let's have a quick chat to discuss your project in detail. I can also provide samples of my previous work to showcase my skills. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ HTML Validation ✅ XHTML Compliance ✅ Code Optimization ✅ Error Fixing ✅ Change Log Documentation ✅ CSS Styling ✅ JavaScript Integration ✅ Accessibility Standards ✅ Website Maintenance ✅ Responsive Design ✅ Debugging ✅ Quality Assurance Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
7.9
7.9

Greetings, You've got a site that works but needs some cleanup to meet XHTML 1.0 standards. I can help by thoroughly reviewing each page of your existing HTML files, ensuring that every element passes the W3C validator without any errors or hidden warnings. My approach will focus solely on improving the code quality while keeping your layout and content intact. As I work through the files, I'll address any quick wins like missing alt tags or obsolete attributes, incorporating those fixes into the overall cleanup. You’ll receive fully validated pages along with a clear change log detailing everything I modified, ensuring full transparency. I’m confident that my experience with XHTML and web development will help bring your site up to standard without disrupting its current design. Best regards, Saba Ehsan
$500 USD in 4 days
7.5
7.5

Hi, your "Fix XHTML Validation Errors - 08/07/2026 04:55 EDT" project is right in my wheelhouse. I develop modern JavaScript apps end to end — React/Vue/Next on the front and Node/Express on the back, in TypeScript where it helps. Working with php, javascript, css, html5, html, web development, xhtml, web design, I focus on responsive, fast UIs, clean component structure, and reliable APIs — no page-builder shortcuts. I'll lock down the scope and key flows first, then ship in reviewable increments. Can we hop on a quick chat to align on your requirements? ⭐ 5.0/5 from a recent client: "it was great working with him, did whatever changes i asked him as per my need." Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$675 USD in 10 days
7.6
7.6

Hello, I see you're looking to bring your site's markup into full compliance with the XHTML 1.0 standard. The operation is clear: take the existing HTML files, refactor the code to eliminate all W3C validation errors and warnings, and deliver the cleaned sources without altering the visual presentation. Technical approach: Each file will be processed to correct structural and syntactical issues. This includes fixing improper tag nesting, ensuring proper self-closing of empty elements (e.g., <br />), quoting all attributes, and rectifying character entities. Obsolete attributes and missing alt tags will also be addressed. Implementation strategy: I will start by running an initial validation to identify common, recurring errors across the pages. Then, I'll work through each file systematically, correcting issues and re-validating until it passes cleanly. You'll receive the updated, compliant files and a concise change log summarizing the key modifications. A few questions: 1. Do you have a preference for the XHTML 1.0 DOCTYPE (e.g., Transitional, Strict)? 2. Are there any server-side includes or dynamic template tags in the files that we should be aware of during validation? 3. For the change log, is a summary of changes per file sufficient, or do you require a more detailed report? Regards, Rohit
$250 USD in 3 days
8.1
8.1

Hello, Your project aligns perfectly with our expertise in front-end development and standards-compliant web development. We can clean up your existing HTML files to achieve 100% W3C XHTML 1.0 validation while preserving your site's current design, layout, functionality, and filenames. We can help with: ✔ Fix all W3C XHTML 1.0 validation errors and warnings ✔ Replace deprecated or invalid markup with XHTML-compliant code ✔ Correct unclosed tags, nesting issues, attributes, and encoding problems ✔ Improve accessibility by adding missing alt attributes and removing obsolete elements where appropriate ✔ Maintain the exact visual appearance and functionality of every page ✔ Provide a concise change log documenting every modification Our approach is to validate each page iteratively, resolve every markup issue without affecting the UI, perform final verification using the W3C Validator, and deliver clean, maintainable XHTML-compliant files with zero validation errors. Quick question: Approximately how many HTML pages require validation, and are they all static HTML files or do some include PHP templates? Regards.
$500 USD in 7 days
7.6
7.6

Hello, I can clean your existing XHTML source files directly and keep the current layout, design, content, and filenames unchanged. I will fix the markup against the W3C validator for the XHTML 1.0 standard, including HTML5-style issues where they conflict with validation, and handle JavaScript or CSS references carefully so nothing breaks. I will also include quick cleanup items like missing alt text, obsolete attributes, improper nesting, and a concise change log showing the edits made. I am ready to begin immediately and would be happy to discuss the project in further detail. Thanks, Teo
$500 USD in 3 days
6.8
6.8

Hello I am Web Developer and know validation rules very well, therefore I am able to edit your XHTML file to make no remaining validation errors and no hidden warnings. Also, I'll upload log with all changes I made I am ready to start working now!
$256 USD in 1 day
7.0
7.0

Subject: XHTML Validation Expert - Ready to Clean Up Your Markup Hi there, I understand you need your website's XHTML 1.0 validation errors cleared up without altering design or content. With my 12+ years of experience, particularly in clean HTML and front-end development, I'm confident I can deliver exactly what you're looking for. My plan is straightforward: I'll meticulously go through each provided HTML file, identify all validation errors and warnings using the W3C validator, and implement the necessary corrections to ensure strict XHTML 1.0 compliance. I'll also be on the lookout for those "quick wins" like missing alt tags you mentioned. You'll receive the updated files, unchanged in name, along with a concise change log detailing all modifications. I'm ready to get started and ensure your site passes validation with flying colors. Let's connect to discuss this further. Best regards, Ashwani
$600 USD in 7 days
6.4
6.4

Your XHTML validation failures are likely caused by unclosed tags, inline style attributes, or deprecated elements that break strict DOCTYPE rules. If these errors exist in templated sections, they are multiplying across every page and creating technical debt that will block future integrations. Quick questions - are you using server-side includes or PHP templates that repeat the same header/footer markup? And do you need the final files to remain static HTML or can they be refactored into reusable components? Here is the architectural approach: - XHTML 1.0 STRICT COMPLIANCE: Run automated linting to catch unclosed tags, fix attribute quoting, convert deprecated elements like <font> and <center> to CSS equivalents, ensure proper DOCTYPE declaration on every file. - W3C VALIDATION PIPELINE: Set up batch validation using the W3C API so every file is tested programmatically before delivery, eliminating manual spot-checking and guaranteeing zero errors. - CHANGE LOG AUTOMATION: Generate structured diffs showing before/after for each file with line-level annotations so you can audit exactly what was modified without re-reading entire pages. I've cleaned legacy codebases for 3 enterprise clients migrating to modern standards without breaking existing functionality. Let's schedule a 15-minute call to review your file structure before I start the cleanup.
$450 USD in 10 days
7.3
7.3

Hi, I can clean your existing HTML files so every page passes the W3C validator under XHTML 1.0 with zero errors and no hidden warnings. I’ll keep the file names, preserve the layout and content exactly, and make only code-quality fixes like proper closing tags, valid nesting, alt text, and removal of obsolete attributes. You’ll get the updated files plus a concise change log showing exactly what was corrected. Regards, Parvesh M.
$250 USD in 3 days
6.4
6.4

Hiring a freelancer for XHTML validation is an incredibly important decision because if it's not done properly, it can lead to an array of issues. As someone with over 8 years of experience in web development and design, including extensive knowledge in HTML and PHP, I am confident that I can provide the top-notch service you require. I have successfully delivered more than 100 error-free projects in my decade-long career, demonstrating meticulousness at code level and commitment to clean markup. To make this process smooth and transparent, I will work directly on your existing HTML files, without altering their filenames, steering clear from any content or design changes you strictly want retained. Finally, I will provide you with fully validated pages and a concise change log highlighting all the modifications made. Choose me for your project and let's transform your site into a more efficient and professional representation of your brand!
$250 USD in 10 days
6.5
6.5

Hi, I have experience with HTML, XHTML, CSS, responsive web development, and frontend code optimization. I can clean up the existing markup, resolve all W3C XHTML 1.0 validation errors, preserve the current design and functionality, and provide a concise change log with the completed work. Thanks, Anshuman
$300 USD in 5 days
6.4
6.4

Hiii, ✋ ___ I will Ensure every page validates against XHTML 1.0 with zero W3C validation errors while preserving the existing design, layout, filenames, & functionality. I'll fix invalid markup, deprecated attributes, nesting issues, missing alt tags, & other validation problems, then provide a concise changelog documenting every modification. Web Frameworks & Technologies :-> ✔️ WordPress ✔️ PHP ✔️ HTML5 / HTML ✔️ XHTML ✔️ CSS 3 ✔️ JavaScript ✔️ UX/UI Design ✔️ Animations Integration ✔️ SEO-Friendly Website Available to start & deliver the best work with 8 yrs of proficiency. -- Regards, Ravi S.
$444 USD in 12 days
6.6
6.6

As an experienced Front-End Designer, I've worked with HTML and XHTML on countless projects over the last 8 years and I would love to ably handle your site's markup cleanup. My expertise ensures your site not only passes the W3C validation standards but also upholds fast load times, full responsiveness, cross-browser compatibility and enhanced accessibility for users. I'll tackle both prominent errors and small deficincies such as absent alt tags or deprecated attributes improving your website's overall quality. My commitment to fast delivery, quality work, and exceeding client expectations is constant. I offer you 2-3 revisions if necessary so at the end of this project, we are both fully satisfied with the final deliverables which are also unsurprisingly aligned: fully validated HTML sources along with a clear change log. Don't miss out on this opportunity to enhance your codebase whilst maintaining the design you already appreciate!
$250 USD in 7 days
6.5
6.5

kab langkat, Indonesia
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