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Troubleshooting the 413 Request Entity Too Large Nginx Error: Quick Fixes

Troubleshooting the 413 Request Entity Too Large Nginx Error Quick Fixes

Is your website displaying a discouraging “413 Request Entity Too Large” error when you or your users attempt to upload or send files? Don’t fret; you’re not alone. 

This Nginx error can be a source of frustration for web administrators, but fear not! In this comprehensive guide, we’ll explore the ins and outs of the 413 Request Entity Too Large Nginx error, including its causes and, more importantly, quick fixes to get your website up and running smoothly.

What is the 413 Request Entity Too Large Error?

To begin, let’s understand what the “413 Request Entity Too Large” error signifies. This error occurs when a user or client attempts to upload a file or send data to your web server, and the server deems the request’s payload size to be too large. 

Nginx, a popular web server, imposes a limit on the maximum request size it can handle. When a request surpasses this limit, the server returns a 413 error to the client, indicating that the request entity is too large to process.

Common Causes of the 413 Request Entity Too Large Error

Understanding the underlying causes of this error is crucial in resolving it effectively. Several factors can lead to the “413 Request Entity Too Large” error:

1. Client-Side Issues

One of the primary reasons for this error is that the client’s request exceeds the server’s configured limit. This could be due to the client attempting to upload a file that’s larger than the server allows. To address this issue, consider these steps:

  • Educate Users: Ensure that your website provides clear instructions to users regarding the maximum file size they can upload. You might want to include a file size limit notification on your upload page.
  • Compression and Resizing: Encourage users to compress or resize large files before uploading. You can also provide links to software or online tools that facilitate this process.

2. Server Configuration

Another common cause is misconfigured server settings. If your Nginx server isn’t properly configured to handle large request entities, you’re likely to encounter this error. Here’s how you can modify your server configuration:

  • Locate Nginx Configuration File: Find your Nginx configuration file, typically located at /etc/nginx/nginx.conf or /etc/nginx/conf.d/your_website.conf.
  • Adjust client_max_body_size: Within your Nginx configuration, locate the http block and add or modify the client_max_body_size directive. For instance, you can set it to a larger value, like 20M, to allow larger request entities.

http {


    client_max_body_size 20M;



3. Review Proxy Server Settings

If you’re using a proxy server in front of your Nginx web server, it may have its request size limits that need to be adjusted. To address this issue:

  • Proxy Server Configuration: Examine your proxy server’s configuration settings. You may find directives related to request size limits that you can modify to match your requirements.
  • Increase Proxy Limits: Adjust the proxy server’s settings to permit larger request entities. Ensure that both the proxy server and Nginx configurations align in terms of request size limits.

4. Inadequate Server Resources

Insufficient server resources, such as memory or processing power, can also lead to this error. When your server is overwhelmed, it may not be able to handle large requests. To optimize your server resources:

  • Upgrade Hosting Plan: Consider upgrading your hosting plan to one that offers more resources. This can include increased RAM, CPU, and storage space, enabling your server to comfortably process larger requests.
  • Server Hardware Upgrade: If you manage your own server hardware, you might need to upgrade it to handle larger requests effectively. Consult with your hosting provider or IT department for hardware recommendations.


In conclusion, the 413 Request Entity Too Large Nginx error can be a source of frustration, but with the right knowledge and quick fixes, you can get your website running smoothly again. 

By addressing client-side issues, modifying Nginx configurations, reviewing proxy server settings, and optimizing server resources, you can troubleshoot and resolve this error effectively. 

Keep your website’s performance in check, and remember that a well-optimized server configuration is the key to avoiding this error in the future. 

With these quick fixes at your disposal, you’ll be well-equipped to handle the “413 Request Entity Too Large” error and ensure a seamless user experience on your website. Don’t let this error hold you back – take action today to keep your website running at its best!


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