Find out what your server TTFB really is.

WordPress Mobile Speed


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No plugin trickery required for this Time To First Byte measurement magic.

Find out what your server’s TTFB really is.

Are you wondering, “What’s TTFB?” Read this first:


You can test TTFB with or

BUT … what if your theme and plugins are hammering the server and slowing things down? That’s not the servers fault.

Wouldn’t it be nice to find out what your servers TTFB really is without the core, theme, and plugin overhead load?

Here’s the trick:

1Download this Time To First Byte sample page.


INSTRUCTION: Right click the browser page and download as htm file. Or use this downloadable zip file. Decompress it before uploading to your media file..

This page is written in HTML code. It loads instantaneously. No WordPress core, plugin delays, or theme overhead is associated with it.

2Upload it to your WordPress media library. Yeah. You heard it right: The media library. No FTP or Cpanel skills required.

3 Copy the HTML file’s URL.

4 Paste the URL into the test field at

5 Copying and paste the HTML file URL (above).

6 The TTFB is labelled First Byte. It appears in the Performance Results – first column from the left. See red square.

We consider Time To First Byte as your minimum server overhead. An excellent TTFB measurement is 200 milliseconds. Typical TTFB is around 400ms to 500ms. And bad is anything over 1 second. In that worst case, plugins are repeatedly hammering server resources. That slows down the server. These are usually the heaviest and popular plugins. They are writing and reading data and creating databases. Plugins like SEO, security, broken-link checkers, backup, caching (examples: SuperCache, W3-Total Cache), dynamic site map generators, related posts, etc.

REFERENCE: common blacklisted plugins

REFERENCE: WIKI: time to first byte defined


Steve Teare
performance engineer
October 2021


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