If you want serious speed improvements on shared hosting (especially DirectAdmin), enabling just one optimization is not enough. For best performance, you should combine:
GZIP Compression
Browser Caching
304 Not Modified Headers
Together, these three techniques reduce bandwidth usage, server load, and page load time — without changing your PHP application logic.
1️⃣ GZIP Compression – Reduce File Size by 50–80%
GZIP compresses HTML, CSS, JS, and JSON files before sending them to the browser. The browser automatically decompresses the files.
If you're using DirectAdmin hosting and want to speed up your website without changing any PHP code, enabling GZIP compression is one of the easiest and most effective optimizations you can make.
GZIP reduces the size of your website files before they are sent to the visitor’s browser. The browser automatically decompresses them, so users never notice anything—except faster loading speed.
What Is GZIP Compression?
GZIP is a server-side compression method. When a user visits your site:
The server compresses HTML, CSS, JS, and JSON files.
The browser downloads a much smaller file.
The browser decompresses it automatically.
This can reduce page size by 50–80%, especially for text-based content.
Why Enable GZIP in DirectAdmin?
If you're running:
A JSON-based homepage
A no-database setup
A cached website
A high-traffic blog or news portal
Then enabling GZIP will:
Reduce bandwidth usage
Improve mobile load speed
Improve SEO performance
Lower server load during traffic spikes
How to Enable GZIP in DirectAdmin
Step 1: Log into DirectAdmin
Access your hosting panel.
Step 2: Open File Manager
Go to your website's main folder:
public_html
Step 3: Edit .htaccess
Open the .htaccess file. If it does not exist, create a new one.