How to Fix the 413 Request Entity Too Large Error

Running into a 413 error while trying to upload a theme, plugin, or chunky media file? It’s one of those moments that can completely derail your workflow. This particular http error status code is basically the server’s way of saying, “Whoa, that’s way too much data for me to handle right now.” But here’s the thing it looks way scarier than it actually is. Think of it as a safety valve rather than a brick wall. 

What Is the 413 Request Entity Too Large Error

So what exactly is this 413 request entity too large situation? In simple terms, it’s an HTTP response telling you that whatever you’re trying to send is bigger than what the server can (or wants to) accept. When you look at http error status codes, anything in the 400 range typically points to something on the client side. But with the 413 error, it’s more about a mismatch you’ve got a legitimate file to upload, but the server’s security settings are being overly protective. 

When the server throws an http 413 at you, it’s basically slamming the door shut before your file can squeeze through. The newer documentation calls this 413 payload too large, which honestly makes more sense because it’s specifically about the size of what you’re sending. Whether you see http status 413 or the older “Entity Too Large” message, you’re dealing with the same core problem: you’ve hit a hard limit somewhere in the configuration. 

Error Variations and Alternative Names

Depending on what web server you’re running NGINX, Apache, maybe IIS and which browser you’re using, the exact wording might shift around a bit. You might see: 

413 Payload Too Large: This is what you’ll see most often these days. Request Entity Too Large: The classic, old-school version. HTTP Error 413: The generic umbrella term. 413 Request Entity Too Large (Nginx): When NGINX wants to make it clear it’s their engine saying no. 

No matter what label it wears, your mission is the same: fix http error 413 by getting your server’s capacity to match up with your actual file sizes. 

When Does the 413 Error Appear

The 413 error almost always shows up during a POST request. Here are the usual suspects: 

You’re uploading a massive video file or a hefty ZIP archive to your Media Library. Another possible cause is thtat you’re trying to install a feature-rich WordPress theme or a plugin that’s packed with extras. You’re submitting a form loaded with multiple attachments. You’re making API calls that involve sending substantial JSON payloads. 

Once you understand that http 413 is really just a size bouncer at the door, you’re already halfway to solving it. 

What Causes the 413 Error

Before we jump into solutions, let’s figure out why the 413 request entity too large showed up in the first place. Like most http error codes, this one can have several root causes. 

Server Upload Size Limits

Nine times out of ten, this is your culprit. There’s a setting buried in your server configuration that puts a cap on how big an HTTP request body can be. Hosting companies usually keep these limits pretty tight by default—it’s their way of guarding against DoS attacks where someone tries to flood the server with endless streams of data. When you cross that threshold, boom, you get an http 413. The fix usually involves adjusting settings to increase php memory limit or tweaking specific directives that control the maximum body size. 

Incorrect File Permissions

This one’s less common but still worth checking. Sometimes the temporary directory where uploads land doesn’t have the right permissions. If the server can’t write to that location because ownership is wrong or permissions are too restrictive, it might toss a 413 your way instead of the more expected 403 Forbidden. Being able to reset file permissions wordpress style is a handy skill to have in your back pocket. 

Insufficient Server Resources

If your server is already running on fumes—especially on shared hosting where resources are split among multiple sites it might reject large files just to keep things stable. When PHP runs out of memory while trying to buffer your incoming file, you could see an http 413. In these situations, you’ll need to increase php memory limit and make sure your upload_max_filesize php and post_max_size php values are properly aligned. 

How to Fix the 413 Error in WordPress

For WordPress folks dealing with the 413 request entity too large wordpress headache, the issue usually pops up in the wp-admin upload area. You’ve got multiple angles of attack here. 

Reset File Permissions

If everything looks good configuration-wise but you’re still stuck, try to reset file permissions wordpress. The standard setup is 644 for files and 755 for directories. You can handle this through FTP or SSH. 

Fire up FileZilla or your preferred FTP client and connect to your server. Navigate to the wp-content folder. Right-click and look for “File Attributes” or “Permissions.” Set directories to 755 and make sure it applies to folders only. Do the same for files, setting them to 644. 

Increase PHP Upload Size Limits

This is the big one when it comes to wordpress max upload size problems. You need to get into your php.ini file. Can’t find it? Just create a new blank one in your root directory and add these lines: 

upload_max_filesize = 64M 
post_max_size = 64M 
memory_limit = 128M

This tells PHP it’s okay to handle larger individual files through upload_max_filesize php and bigger total request bodies via post_max_size php. If you want to increase php memory limit even further and your host allows it, you can bump memory_limit up to 256M or higher. 

Edit the functions.php File

Don’t have server-level access? No problem. You can work with the functions.php wordpress file instead. Head to Appearance > Theme File Editor and drop in: 

@ini_set( 'upload_max_size' , '64M' ); 
@ini_set( 'post_max_size', '64M' ); 
@ini_set( 'max_execution_time', '300' ); 

This is a quick way to increase upload size wordpress, but keep in mind switch themes and these settings disappear. That’s why tackling the 413 request entity too large wordpress issue at the .htaccess or server level is usually more reliable. 

Edit the .htaccess File

The .htaccess file is incredibly powerful if you’re on an Apache server. To knock out the 413 request entity too large error, toss these lines at the bottom: 

php_value upload_max_filesize 64M 
php_value post_max_size 64M 
php_value max_execution_time 300 
php_value max_input_time 300 

This directly modifies your site’s environment, often bypassing whatever default limits your host has set to increase upload size wordpress. 

How to Fix 413 on NGINX and Apache

Running your own VPS or acting as a server admin? The WordPress-level fixes might not cut it. You’ll need to dig into the nginx config file or Apache directives. 

Set client_max_body_size in NGINX

NGINX ships with a really conservative 1MB upload limit by default. This is hands-down the most common reason for the 413 request entity too large nginx error. To fix it, you need to edit your nginx config file usually hanging out at /etc/nginx/nginx.conf or in your site-specific block under /etc/nginx/sites-available/. 

Look for the http, server, or location block and add: 

client_max_body_size 64M;

After saving, reload the service so your nginx client max body size change actually takes effect: 

sudo nginx -s reload

Set LimitRequestBody in Apache

Apache handles this through the limitrequestbody apache directive. It works similarly to the client_max_body_size nginx setting. You can add this to your httpd.conf file or even a local .htaccess file: 

LimitRequestBody 67108864

That number is in bytes, so 67,108,864 translates to 64MB. You could set this to 0 to remove the limit entirely, but that’s asking for trouble from a security standpoint—it basically opens the door to 413 error-related exploits. 

Fix 413 in Reverse Proxy Setups

Modern web stacks often use NGINX as a reverse proxy sitting in front of Apache or a Docker container. In this scenario, you might see a 413 request entity too large nginx error even when your Apache configuration is perfect. The request hits NGINX first, and if it exceeds the client_max_body_size nginx limit there, it never even makes it to the backend. Always make sure every layer of your stack—from load balancer to CDN to web server has consistent size limits. 

How to Prevent the 413 Error

Fixing an active 413 error is reactive firefighting. A smarter approach means your users never bump into the 413 request entity too large message at all. 

Optimize and Compress File Sizes

The easiest way to dodge a 413 error? Send smaller files. For wordpress max upload size issues with images, lean on tools like Smush or EWWW Image Optimizer. For videos, consider hosting them on YouTube or Vimeo instead of eating up your own server space. Keeping your payload lean is the best defense against a 413 payload too large response. 

Enable Chunked Uploads

Chunked uploading is pretty clever it breaks a large file into smaller pieces (say, 2MB each) and sends them one at a time. Since each individual request stays small, it never triggers the 413 error. A lot of modern WordPress plugins designed for big file uploads use this approach to sidestep the wordpress max upload size without touching any server configuration files. 

Use a CDN to Reduce Server Load

Setting up a cdn wordpress solution like Cloudflare can help manage traffic, but watch out CDNs have their own upload limits. Cloudflare’s free tier, for example, caps out at 100MB. Try to upload a 150MB file and the CDN will slap you with a 413 error before your server even sees the request. Make sure your CDN settings play nice with your server’s client_max_body_size nginx or Apache limits. 

Monitor and Audit Server Settings

Check your phpinfo() page regularly to see your current upload_max_filesize php settings. As your site grows and evolves, those old limits might not cut it anymore. Regular check-ups let you increase php memory limit and other parameters before they become roadblocks. 

Where to Find Your NGINX Configuration File

If you’re working with NGINX and need to locate the nginx.conf location, it’s typically at /etc/nginx/nginx.conf on most Linux distributions. Some setups split configuration across multiple files in /etc/nginx/sites-available/ and /etc/nginx/sites-enabled/. Always make a backup before editing the nginx config file one typo can prevent NGINX from restarting. 

413 Error FAQ

Additional Considerations

Sometimes the 413 error shows up in unexpected places. If you’re running a headless WordPress setup or using WordPress as a backend API, you might encounter http error status codes during REST API calls. Large JSON payloads can trigger the same size restrictions. In these cases, the fix is the same adjust your server’s upload limits but the context is different. 

Another scenario worth mentioning: if you’re using a content delivery network (cdn wordpress setup), make sure to check their documentation for upload limits. Some CDNs have their own restrictions that sit on top of your server’s limits. You might have perfectly configured your nginx client max body size or apache limitrequestbody, but if the CDN rejects the file first, you’ll still see the error. 

For developers working in local environments, the 413 error can be particularly frustrating because it often doesn’t appear until you push to production. Your local server might have generous limits, but your production host could be much more restrictive. Always test file uploads in a staging environment that mirrors your production setup. 

Final Thoughts

The 413 error might seem intimidating at first glance, but it’s actually one of the more straightforward http error codes to resolve. Whether you’re dealing with a 413 request entity too large wordpress issue or a 413 request entity too large nginx problem, the solution almost always comes down to adjusting size limits in your configuration files. 

Start with the simplest fix for your situation if you’re on WordPress and don’t have server access, try the functions.php wordpress or .htaccess approaches first. If you do have server access, go straight to the nginx.conf location or Apache configuration files to make changes that affect your entire server. 

Remember that preventing the error is better than fixing it repeatedly. Compress your files, consider chunked uploads for large media, and keep an eye on your server’s capacity as your site grows. With the right configuration and a bit of proactive maintenance, you can make the 413 payload too large error a thing of the past.