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My WordPress site is running on a theme that looks fine to visitors, yet the template files in the back-end are outdated. I need someone to bring those theme files up to current WordPress standards so future core or plugin updates don’t break anything and so I can keep using the visual editor without glitches. Scope • Update the theme’s PHP, CSS and any bundled JavaScript only where necessary to eliminate deprecated functions and align with the latest WordPress coding standards. • Preserve every pixel and interaction on the front-end—no design or layout changes should be visible to users. • Ensure the Customizer, widgets, menus, and other admin-side controls continue working smoothly after your changes. Deliverable A refreshed theme folder (or child-theme, if that’s the safer route) ready to be uploaded, plus a short changelog describing what you touched and why, so I can track it for future maintenance.
Project ID: 40635110
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222 freelancers are bidding on average $129 USD for this job

Hi, I can help update the outdated theme template files without changing how the site looks on the front end. I’d approach this carefully by fixing deprecated WordPress functions and any necessary PHP/CSS/JS issues, then testing the Customizer, widgets, menus, and visual editor so everything remains stable after updates. If needed, I can also move the adjustments into a child theme where that is the safer long-term option. You’ll receive the updated theme files plus a short changelog explaining each change.
$180 USD in 7 days
9.8
9.8

I specialize in updating WordPress themes to align with current standards while preserving the original design and functionality. I will update the backend code to meet WordPress standards, ensuring future compatibility. The front-end design and user experience will remain unchanged. I will provide a detailed changelog and offer a refreshed theme folder or child theme for security. My goal is to deliver a seamless update that enhances your site's sustainability and scalability. Let's work together to elevate your WordPress site.
$225 USD in 5 days
8.8
8.8

With extensive experience in WordPress theme development, I understand the importance of keeping theme files updated to prevent future issues with core updates. I have successfully aligned themes with the latest WordPress standards while maintaining visual integrity for users. How soon would you like to start this project to ensure seamless performance and user experience? Regards, Yogesh Kumar
$50 USD in 8 days
8.5
8.5

Having worked extensively in the world of WordPress, across both backend and frontend development, I bring a wealth of experience to the table. I'm not only knowledgeable about WordPress's latest coding standards but also have a sharp eye for preserving design integrity while making updates. My excellent grasp on PHP, CSS, and other relevant languages equips me to eliminate deprecated functions with surgical precision without disturbing your site's visual appeal. I ensure that all your admin-side controls, from the customizer to widgets and menus, continue working seamlessly, as they should. With a particular knack for delivering high-quality WordPress solutions, I can also provide you with a detailed changelog of every change made during the update process. This ensures full transparency and aids in future maintenance. In conclusion, my experience in backend WordPress development along with my proficiency in HTML, PHP and Web Design make me an ideal candidate for your project. Let me perform the necessary technical uplifts on your theme files so that you can keep managing your site effortlessly while staying up-to-date with future WordPress core or plugin updates. We can discuss more details about your specific requirements so that I configure your theme folder or child-theme (if that's safer) accordingly to deliver exactly what you need!
$140 USD in 7 days
8.2
8.2

Hi, I can safely update your WordPress theme’s **PHP, CSS, and JavaScript** to current WordPress standards while keeping the existing frontend design and functionality unchanged. I’ll identify deprecated functions and outdated code, update only what’s necessary, and verify the **Customizer, widgets, menus, visual editor, and frontend interactions** continue working correctly. I’ll also test for compatibility with the current WordPress/PHP environment before delivery. You’ll receive the updated theme/child-theme files along with a clear **changelog explaining the changes and maintenance considerations**. Best regards, Muhammad Rizwan LA
$100 USD in 2 days
8.3
8.3

( ͡❛ ᴗ ͡❛ ) Happy Time to Discussion - ⭐ I see you need your WordPress theme files updated to current standards so future core or plugin updates don’t break functionality, while keeping the front‑end design exactly as it is. I specialize in WordPress development with strong PHP, CSS, and JavaScript skills. I will carefully update deprecated functions, align the codebase with modern WordPress coding standards, and ensure the Customizer, widgets, menus, and visual editor continue working smoothly. I can also deliver a refreshed theme folder or child theme, along with a clear changelog describing each adjustment for future maintenance. Would you like me to proceed with a child theme approach for safer long‑term updates, or do you prefer direct updates to the existing theme folder? Let’s connect to finalize details and get started. Feel free to message me. Sincere, Razaul
$125 USD in 7 days
7.8
7.8

Your WordPress theme needs a careful backend refresh, not a redesign. I’ll review the existing theme files for deprecated PHP functions, outdated WordPress hooks, template compatibility issues, and any necessary CSS or bundled JavaScript updates while preserving the current front-end appearance, layout, and interactions pixel for pixel. I’ll first create a safe working copy and audit the theme against current WordPress coding practices. Where appropriate, I’ll use a child-theme approach so future theme updates remain safer; otherwise, I’ll provide a clean refreshed theme folder ready for upload. I’ll also test the Customizer, widgets, menus, editor behavior, templates, and plugin-related hooks to ensure the admin experience continues working smoothly. Changes will remain limited to compatibility and maintenance improvements, with no unnecessary visual alterations. You’ll receive the updated theme folder plus a concise changelog explaining each touched file and the reason for the change. I have 10+ years of PHP and WordPress development experience and can begin immediately. Do you already have a recent backup or staging copy of the current theme available? Muhammad Saad
$95 USD in 2 days
7.9
7.9

I’ve worked on many WordPress theme compatibility and backend cleanup tasks like this, where the goal is to modernize the code but keep the site visually identical. I can review the theme files, remove deprecated functions, update only the necessary PHP/CSS/JS parts, and make sure the admin-side features continue working properly. I’ll also provide a simple changelog so future maintenance is easier for you. Happy to start with a safe, minimal-change approach.
$170 USD in 7 days
8.0
8.0

Hi, the job is really a compatibility hardening pass on an existing WordPress theme, with the constraint that the front-end must remain visually identical. The real engineering risk is regression in admin-side behavior where deprecated template logic can quietly break editor, widget, or Customizer flows even when the public site still looks correct. I’ve worked in several live codebases where the right approach was targeted remediation rather than broad rewrites. For this kind of PHP/CSS/JavaScript cleanup, I usually start with a template audit, isolate deprecated patterns, and update only the parts that affect forward compatibility. The closest examples in my background are Custom Feature Development & Integration and Squarespace Checkout Streamlining for Meal Service -- 2, both of which required careful changes inside an existing production site without disturbing visible behavior. I typically design this as a preservation-first pass: review template hierarchy, separate structural fixes from admin compatibility fixes, and validate menus, widgets, and editor behavior before packaging the refreshed theme or child theme. The goal is long-term maintainability, not just getting past the next update. If useful, I can start by reviewing the active theme structure and mapping the highest-risk template files before any edits. Thanks, Hercules
$140 USD in 7 days
7.5
7.5

Modernising outdated theme files without changing a single pixel on the front end is a careful, surgical job — exactly the kind of WordPress work I like to get right. I'll start by auditing the theme in a staging copy, flagging deprecated functions, old hooks, and any PHP 8.x/JS warnings, then update the PHP, CSS, and bundled scripts only where needed to meet current WordPress coding standards — replacing deprecated calls with their modern equivalents while keeping all output identical. I'll test the Customizer, widgets, menus, and editor thoroughly after each change, and do before/after visual comparisons so nothing shifts for your visitors. Where a child theme is the safer route to protect against future updates, I'll advise that. You'll get the refreshed theme folder ready to upload plus a clear changelog of what I touched and why. I can start right away.
$30 USD in 1 day
7.7
7.7

Hi, I can safely modernize the outdated theme files, remove deprecated code, and preserve the existing design and functionality. I’ll also provide a clean changelog and ready-to-upload theme.
$39 USD in 1 day
7.5
7.5

⭐ WORDPRESS THEME COMPATIBILITY UPDATE — READY TO START ⭐ Hello, ➤ I understand you need the outdated theme files modernized without changing the existing frontend appearance or functionality. I’ll focus strictly on compatibility, clean code, and making sure the admin-side features continue working smoothly. ✅ How I will help: ↪️ Update deprecated PHP, CSS, and JavaScript where required ↪️ Bring theme code closer to current WordPress standards ↪️ Preserve the existing design, layout, and interactions pixel-for-pixel ↪️ Test Customizer, widgets, menus, and visual editor functionality ↪️ Deliver the updated theme/child theme with a clear changelog ⏩ TOOLS I USE: ✔️ WordPress ✔️ PHP ✔️ JavaScript ✔️ CSS ⚫ Quick Questions: ❓ Which WordPress version and plugins are currently installed? ❓ Does the theme contain any custom functions or modifications? ✨ I’ll keep the update focused and safe, ensuring your existing website remains visually unchanged while being better prepared for future updates. Regards, NUPUR
$105 USD in 4 days
7.9
7.9

Hello Your theme is currently hindering your brand's professionalism, and I know how frustrating that is when you need a polished site to convert visitors into clients. I specialize in WordPress customization and theme optimization, having recently helped businesses pivot from clunky, outdated designs to high-performing, clean interfaces that drive engagement. I can overhaul your site’s layout to match your vision while ensuring it remains fast and mobile-responsive. Are you free for a brief call to discuss your design goals? Giáp Văn Hưng
$250 USD in 7 days
7.0
7.0

Your brief is clear, and yes, this can be handled without affecting the live design or user experience. I would update the backend theme code to current WordPress standards, check compatibility with the visual editor and admin controls, and keep the edits limited to only what is necessary. If a child-theme structure is better for update safety, I can prepare it that way as part of the delivery. You’ll get a ready-to-upload folder and a concise maintenance note.
$160 USD in 7 days
7.3
7.3

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.
$140 USD in 7 days
7.0
7.0

I noticed you're looking for WordPress Backend Template Update Needed. I can build a fast, mobile-friendly website with online booking/contact forms, service pages, and SEO-ready structure. I have 300+ websites and 7+ years of experience on Freelancer with 5-star rating, so you're working with someone who has delivered consistently. A few quick questions: • Do you already have a logo and branding? • Do you have content ready, or should I help with that? • Is there any website whose design you like? I can start immediately.
$100 USD in 2 days
7.2
7.2

As a seasoned WordPress developer, I can assure you that I have the skills and expertise required to update your site's backend templates without causing any disruption to your front-end interface. I am well-versed in the latest WordPress coding standards and proficient in PHP, CSS, HTML, and JavaScript. With my strong foundation in backend development, I'll eliminate any deprecated functions while preserving every important design element and interaction. Having worked on numerous WordPress projects, I understand how crucial it is to maintain the functionality of essential admin-side controls like the Customizer, widgets, menus, and more. I guarantee that all these will continue to work smoothly even after I make the necessary updates. Moreover, providing value beyond just coding has always been my work philosophy. Along with delivering an updated theme folder or child-theme based on your preference, I will also provide a comprehensive changelog explaining all the changes made and their implications for future maintenance purposes. Choosing me for this project means ensuring not only up-to-date backend templates but also a seamless user experience on both ends. Let's make sure your website remains secure and stable as it grows.
$140 USD in 5 days
7.1
7.1

Hi, I understand the importance of updating your WordPress backend template to align with the latest WordPress standards while maintaining the current front-end design for a seamless user experience. I will carefully update the theme's PHP, CSS, and JavaScript to eliminate deprecated functions and ensure compatibility with future core or plugin updates. Could you please provide access to the theme files and any specific requirements you have for the update process? Looking forward to chatting. Thank you.
$50 USD in 2 days
6.7
6.7

Hi there, I've read your project's requirements and I would love to help you. I'm a WordPress developer with the necessary skills to get the job done. I'm available to get started right away!
$200 USD in 3 days
6.9
6.9

Hi there, I understand you need the WordPress theme updated behind the scenes without changing anything users currently see. I can carefully update the outdated PHP, CSS, and JavaScript, remove deprecated functions, and align the theme with current WordPress standards while keeping the existing design and functionality intact. I will also test the Customizer, widgets, menus, and admin features to make sure everything continues working properly. You will receive: • Updated theme/child theme • No front-end design changes • WordPress compatibility checks • Admin-side testing • Clear changelog of all updates Connect Soon! Sushma Singh
$99 USD in 5 days
6.7
6.7

Mountain View, United States
Member since Dec 25, 2010
$15-25 USD / hour
$30-250 USD
₹12500-37500 INR
$250-750 USD
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$30-250 AUD
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₹1500-12500 INR
₹600-1500 INR
$250-750 USD
$250-750 AUD
₹600-1500 INR
$30-250 USD
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£20-250 GBP
$15-25 USD / hour
£750-1500 GBP
₹12500-37500 INR
€250-750 EUR
$30-250 USD
$30-250 USD
$30-250 USD