Critical WordPress Files You Must Backup (And How to Do It Like a Pro)

Critical WordPress Files You Must Backup (And How to Do It Like a Pro)

Critical WordPress Files You Must Backup (And How to Do It Like a Pro)

May 12th, 2025

By, Editorial Team

WordPress

1. Introduction

In the dynamic realm of website management, WordPress stands as a powerful and versatile platform. Yet, even the most robust digital fortresses require diligent safeguarding. While the importance of backing up your WordPress database is widely acknowledged, a critical oversight often lurks beneath the surface: the neglect of essential root files. Think of your database as the intricate content of your website, while these core files form its very structure and functionality. Losing them can be akin to having a beautifully furnished house vanish, leaving only the blueprints.

This blog post shines a spotlight on the indispensable WordPress files that demand your proactive attention and manual backup. We’ll delve into why these specific files are irreplaceable and guide you through a professional-grade backup strategy. By the end of this guide, you’ll not only understand what to backup but also how to do it with the confidence of a seasoned WordPress expert, ensuring your website’s resilience against unforeseen mishaps.

2. Why Not All WordPress Files Can Be Replaced?

When disaster strikes your WordPress website, a glimmer of hope often lies in the fact that the core WordPress installation files – the fundamental engine that powers your site, such as the wp-admin and wp-includes directories – can indeed be re-downloaded directly from wordpress.org. This is akin to getting a fresh copy of the operating system for your computer. However, this is where the simplicity ends, and the critical need for comprehensive backups begins.

The true uniqueness of your WordPress site resides in a set of site-specific files that are absolutely irreplaceable if lost. At the forefront of these is the wp-config.php file. This seemingly small file holds the keys to your entire database – your database name, username, password, and host. Without it, reconnecting to your content becomes a monumental, often impossible, task.

Furthermore, the entire wp-content/ directory is a treasure trove of your website’s identity and functionality. It houses your meticulously chosen themes, each with its unique design and layout. It contains all the plugins you’ve installed to extend your site’s capabilities, along with their individual settings and configurations. Crucially, the uploads/ subdirectory within wp-content/ stores every image, video, and document you’ve ever uploaded – the very media that brings your content to life.

Beyond these, you might have custom .htaccess files, which control server behavior and URL structures, or other bespoke configuration files tailored to your specific hosting environment or website needs. Losing these unique elements means more than just a website outage; it signifies the potential loss of your carefully curated design, essential functionalities, valuable media library, and intricate settings. Rebuilding these from scratch is a time-consuming and often error-prone endeavor, underscoring the paramount importance of backing them up diligently.

3. Critical WordPress Files You Must Backup

To truly safeguard your WordPress website, understanding which files are paramount for backup is crucial. While a database backup is essential, neglecting the following files leaves you vulnerable to significant data loss and website downtime.

3.1. wp-config.php

  • What it contains: This seemingly small but mighty file holds the keys to your entire WordPress installation. It contains your database credentials (database name, username, password, host), unique security salts that encrypt sensitive information, WordPress table prefix, and debugging settings. Think of it as the central nervous system connecting your website’s files to its data.
  • Why it’s unique and cannot be replaced: Your wp-config.php is generated specifically for your WordPress installation during the setup process. The database credentials are unique to your database, and the security salts are randomly generated, making your file utterly distinct. Downloading a fresh copy of WordPress will not provide you with your specific wp-config.php. Losing this file means losing the connection to your entire website’s content.
  • How to locate and backup this file: This critical file resides in the root directory of your WordPress installation – the same level as the wp-admin, wp-content, and wp-includes folders. You can access it using an FTP client (like FileZilla) or through your hosting provider’s file manager. To back it up, simply download a copy to your local computer. Treat this backup with utmost care, as it contains sensitive information.

3.2. wp-content/ Folder

This directory is the heart and soul of your website’s customization and content. It encompasses several vital subdirectories:

  • Themes (wp-content/themes/): This folder houses all your installed WordPress themes, including your active theme and any backup themes. Your theme dictates the visual appearance and often the functionality of your site. Losing your theme files, especially if you’ve made custom code modifications, means losing your website’s unique design and potentially breaking its layout.
  • Plugins (wp-content/plugins/): This directory contains all the plugins you’ve installed to extend your WordPress functionality, from contact forms and SEO tools to security enhancements and e-commerce features. Each plugin has its own settings and data. Without a backup, you’d have to reinstall and reconfigure every single plugin, a time-consuming and error-prone process.
  • Uploads (wp-content/uploads/): This is where all your media files reside – images, videos, audio files, and documents uploaded through the WordPress media library. For many websites, this represents years of valuable content creation. Losing this folder means losing all your visual assets and downloadable files.
  • Caches and other custom content: Depending on your setup, this folder might also contain cached files generated by caching plugins or other custom content and folders added by you or your plugins.

The importance of each subdirectory cannot be overstated. Imagine spending countless hours customizing a theme or configuring essential plugins, only to have it vanish due to a server issue. A real-world example: a website owner who didn’t back up their wp-content/ folder experienced a server crash. They had to completely rebuild their visually rich portfolio site, losing all their custom theme modifications and years’ worth of project images – a devastating and costly setback.

3.3. Custom Configuration Files

Beyond the core WordPress structure, certain configuration files are unique to your setup and crucial for your site’s functionality and SEO:
  • .htaccess: This powerful file, typically located in your WordPress root directory, controls server behavior, including URL rewrites for SEO-friendly permalinks, security settings, and caching rules. A corrupted or lost .htaccess file can lead to broken links and accessibility issues.
  • robots.txt: This file, also in the root directory, instructs search engine crawlers which parts of your website to access and which to avoid. A misconfigured or missing robots.txt can negatively impact your site’s search engine visibility.
  • Any custom PHP or config files in root: If you’ve added any custom PHP files (e.g., for maintenance mode or specific functionalities) or other custom configuration files in your WordPress root directory, these are also vital to back up.
You should back up these custom configuration files whenever you make changes to them or as part of your regular backup routine. Losing them can result in unexpected website behavior, SEO problems, or the loss of custom functionalities you’ve implemented.

4. How to Backup These Critical Files (Manual Method)

While numerous WordPress backup plugins exist, understanding the manual process provides invaluable insight into your website’s architecture and offers a reliable alternative when needed. Here’s a step-by-step guide to backing up those irreplaceable WordPress files like a true professional:

4.1. Step 1: Access Your Site via FTP or cPanel File Manager

To begin, you’ll need to connect to your website’s server. You have two primary methods:

  • FTP (File Transfer Protocol): This method requires an FTP client application (such as FileZilla, Cyberduck, or Transmit). You’ll need your FTP credentials, typically provided by your hosting provider (usually found in your hosting account dashboard). Enter your hostname, username, password, and port (usually 21) into your FTP client to establish a connection.
  • cPanel File Manager: Most web hosting providers offer cPanel, a web-based control panel. Log in to your cPanel account and locate the “File Manager” option. This will open a browser-based interface allowing you to navigate your website’s files and folders.

Choose the method you’re most comfortable with. Both will grant you access to the root directory of your WordPress installation.

4.2. Step 2: Download wp-config.php

Once connected to your server, navigate to the root directory of your WordPress installation. You should see familiar folders like wp-admin, wp-content, and wp-includes. Locate the wp-config.php file.

  • FTP: Right-click on the wp-config.php file and select “Download” (or a similar option depending on your FTP client). Choose a secure location on your local computer to save the file.
  • cPanel File Manager: Right-click on the wp-config.php file and select “Download” from the context menu. Your browser will then download the file to your default download location.

4.3. Step 3: Download the Entire wp-content Folder

The wp-content folder is a treasure trove of your website’s unique assets. To back it up:

  • FTP: Locate the wp-content folder. Right-click on it and select “Download.” Be prepared, as this folder can be quite large depending on the size of your media library and the number of themes and plugins you have. The download time will vary based on your internet connection speed and the folder’s size. Ensure your local drive has sufficient storage space.
  • cPanel File Manager: Right-click on the wp-content folder and select “Compress.” Choose a ZIP format for easier download. Once compressed, right-click on the newly created ZIP file and select “Download.” After downloading, you can optionally delete the ZIP file from your server to save space.

4.4. Step 4: Backup .htaccess and Other Custom Files

Return to the root directory of your WordPress installation.

  • .htaccess: Look for a file named .htaccess. Note that on some systems, files starting with a dot are hidden. In your FTP client, you might need to enable the option to “Show Hidden Files” (usually found in the settings or view menu). In cPanel File Manager, ensure “Show Hidden Files (dotfiles)” is checked in the settings (usually accessible via a gear icon in the top right). Once visible, download the .htaccess file to your local computer using the same method as you did for wp-config.php.
  • Custom PHP or config files: If you’ve created or uploaded any custom PHP files (like maintenance.php) or other unique configuration files in the root directory, identify them and download them as well. Make a mental note of these files so you don’t forget them in future backups.

4.5. Step 5: Store Backups Securely

Once you’ve downloaded all the critical files, it’s paramount to store them in a secure location. Consider the following options:

  • Local External Hard Drive: Copy the downloaded files and folders to an external hard drive that is not permanently connected to your computer. This protects against local hardware failures.
  • Cloud Storage Services: Utilize reputable cloud storage providers (like Google Drive, Dropbox, OneDrive, or specialized backup services) to store your backups. Ensure you use strong, unique passwords for these accounts and consider enabling two-factor authentication.
  • A Combination of Both: The most robust strategy often involves storing backups in multiple locations, including a local external drive and a cloud service, providing redundancy.

To keep your backups organized and allow you to revert to a specific point in time if needed, adopt a clear labeling system. Include the date in the filename (e.g., wp-config-20250512.php, wp-content-20250512.zip). If you make frequent changes, consider a simple versioning system (e.g., wp-content-v1.zip, wp-content-v2.zip). This practice will save you time and frustration when you need to restore your website.

5. Automating the Process (Optional)

While manual backups offer a deep understanding of your WordPress infrastructure, the demands of a busy website often necessitate a more streamlined approach. This is where the power of automated backup plugins comes into play, offering convenience and peace of mind by handling the heavy lifting for you. Several excellent plugins are available for comprehensive WordPress backups, including:

  • UpdraftPlus: A highly popular and user-friendly plugin that allows scheduled backups to various cloud storage options (Google Drive, Dropbox, Amazon S3, etc.) and offers easy restoration.
  • BackupBuddy: A premium plugin known for its reliability and extensive features, including real-time backups, website migration tools, and malware scanning.
  • Duplicator: Primarily known for website migration and cloning, Duplicator also provides robust backup capabilities, creating easily deployable packages of your entire site.
  • WPvivid: A free plugin with options for incremental backups, remote storage integration, and one-click restoration, making it a solid choice for many users.

The significant advantage of these automated tools lies in their ability to backup both your critical files and your WordPress database in a single, coordinated process. Instead of manually downloading files and exporting your database separately, these plugins handle everything according to your defined schedule – daily, weekly, or even hourly.

Furthermore, these plugins often offer features that simplify the backup management workflow. They can automatically upload backups to remote storage locations, safeguarding your data against server failures. Many provide options for email notifications, keeping you informed about the status of your backups. Some even offer features like incremental backups, which only backup changes made since the last full backup, saving server resources and backup time.

By automating your backup strategy, you minimize the risk of forgetting to perform backups regularly, ensuring that a recent and complete copy of your website – including those irreplaceable files and your valuable database content – is always readily available should a disaster strike. This proactive approach can save you countless hours and potential heartache in the long run.

6. Bonus: How to Restore These Files

Knowing how to back up your critical WordPress files is only half the battle; understanding the restoration process is equally crucial when disaster strikes, during a website migration, or when troubleshooting errors.

6.1. Restoring wp-config.php:

If your wp-config.php file is missing or corrupted, your website will likely display an error connecting to the database. To restore it, access your server via FTP or cPanel File Manager. Locate the root directory of your WordPress installation. If a corrupted wp-config.php file exists, you may want to rename it (e.g., wp-config-old.php) as a temporary measure. Then, upload the backed-up wp-config.php file from your local computer to the root directory. Ensure the file permissions are correctly set (usually 644). Once uploaded, try accessing your website again.

6.2. Restoring the wp-content Folder:

Restoring the entire wp-content folder is necessary when you’ve lost themes, plugins, uploads, or other custom content. Using FTP or cPanel File Manager, navigate to the root directory. Locate the existing wp-content folder. It’s advisable to rename it (e.g., wp-content-old) before proceeding. Then, upload the backed-up wp-content folder (either the unzipped folder or the zipped archive, which you would then need to extract on the server). This process can take a significant amount of time depending on the size of the folder. Once the upload/extraction is complete, check your website to ensure all themes, plugins, and media are restored. You might need to reactivate your theme or plugins in the WordPress admin dashboard after a full restoration.

7. Final Tips for Safe Backups

Implementing a robust backup strategy for your critical WordPress files is a cornerstone of responsible website ownership. To ensure your backups are truly effective and your website remains resilient, keep these final tips in mind:

  • Schedule Regular Backups: Consistency is key. Don’t wait for a problem to occur before backing up. Establish a regular backup schedule that aligns with the frequency of your website updates and content changes. For active sites, daily backups are recommended, while less frequently updated sites might suffice with weekly backups. Leverage automated backup plugins to handle this schedule seamlessly.
  • Store Copies in Multiple Locations: Relying on a single backup location is risky. If your server fails or your local drive crashes, your only backup could be lost. Implement the 3-2-1 backup rule: have at least three copies of your data, on two different storage media, with at least one copy stored offsite (e.g., cloud storage). This redundancy significantly minimizes the risk of total data loss.
  • Test Your Backups Periodically: A backup is only as good as its ability to be restored. Regularly test your backup process to ensure that you can successfully restore your files and database. This will not only give you confidence in your backup strategy but also familiarize you with the restoration process in a non-emergency situation.
  • Keep Sensitive Files Secure: Your wp-config.php file contains sensitive database credentials. Treat your backups containing this file with utmost care. Encrypt local backups and use strong, unique passwords for any cloud storage services you utilize. Avoid storing backups on publicly accessible servers or sharing them insecurely. By following these final tips, you’ll establish a safe and reliable backup system, safeguarding your valuable WordPress website against unforeseen events.

8. Frequently Asked Questions

Can I redownload wp-config.php?

No, you cannot simply redownload your specific wp-config.php file from wordpress.org. This file is unique to your WordPress installation as it contains your database credentials and security salts, which are generated during the initial setup. A fresh WordPress download will provide a sample wp-config-sample.php file that you would need to configure with your specific database details. Therefore, backing up your existing wp-config.php is crucial.

Is wp-content the only folder I need to back up?

While the wp-content folder is arguably the most critical due to its unique themes, plugins, and uploads, it’s not the only essential element. You must also back up your wp-config.php file for database connectivity and any custom configuration files like .htaccess and robots.txt to preserve your site’s functionality and SEO settings. A complete backup strategy includes these critical files in addition to the database.

How often should I back up my WordPress files?

The frequency of your backups depends on how often you update your website. For sites with daily content updates or e-commerce activity, daily backups are highly recommended. For websites with less frequent changes, a weekly backup schedule might suffice. However, it’s always wise to perform a backup before making any significant changes, such as installing new themes or plugins, or editing core files.

Can I use Dropbox or Google Drive for backups?

Yes, you can certainly use cloud storage services like Dropbox or Google Drive to store your WordPress backups. Many automated backup plugins offer direct integration with these services. However, remember that these services primarily focus on file synchronization and might not offer the advanced backup features like versioning or scheduled automated backups that dedicated WordPress backup plugins provide. While they are good for storing downloaded manual backups, using a dedicated backup solution is generally more efficient and feature-rich for regular WordPress backups.

9. Conclusion

Safeguarding your WordPress website transcends simply backing up your database. The critical root files – wp-config.php, the entire wp-content directory, and custom configuration files – are the unique building blocks of your online presence. Losing them can lead to significant data loss and website downtime. Whether you opt for the manual approach or leverage the power of automated backup plugins, establishing a consistent and reliable backup strategy is paramount. Remember to schedule regular backups, store them securely in multiple locations, and periodically test their integrity. By prioritizing the backup of these irreplaceable files, you’re investing in the long-term resilience and stability of your valuable WordPress website.

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