What Is a Flat File CMS?
How a flat file CMS stores content
A flat file CMS is a content management system that stores pages, posts and settings as plain text files on the server, rather than in a database. Grav and Kirby are two examples. Most content is written in Markdown, and the CMS reads the matching file when a visitor requests a page.
The folder structure often becomes the site structure. A file stored in a folder named blog can serve the URL /blog/first-post, so the layout of the files and the layout of the site are closely linked. Editing can be done in a text editor, through a web admin panel or by committing changes to a Git repository.
How it differs from a database-driven CMS
A database-driven CMS, such as WordPress (see how a CMS works), stores content in tables and queries the database when it builds a page. A flat file CMS skips the database and reads files directly. Both still assemble pages on the server for each request, which separates them from a static site generator, which builds pages once before publishing.
The main practical differences are fewer moving parts and simpler backups. There is no database server to install or keep in sync, and the whole site can be copied as a folder. Version control also fits naturally, because every change is a file change that can be tracked.
Advantages and limitations of flat file storage
Flat file CMS platforms suit small and medium sites, personal blogs, documentation and projects whose owners are comfortable working with files. Hosting is often simple, and the site can move between servers with little effort.
The limits appear as sites grow. Searching, filtering and complex queries across thousands of pages can be slower than with an indexed database. Several editors working at once need a clear workflow, and the ecosystem of extensions is usually smaller than WordPress's. Security depends on protecting the admin panel and setting file permissions correctly. For the wider picture, see the types of CMS.
Frequently asked questions
Is a flat file CMS faster than a database CMS?
Not automatically. For small sites, reading a few files can be quick, and caching makes both types fast. With large volumes of content and complex queries, a database is often more efficient. Speed depends mainly on caching, hosting and how much content the site holds.
Is a flat file CMS secure?
It has no database that attackers can target through SQL injection, a common attack that manipulates database queries, which removes one major risk. It still needs regular updates, a protected admin area and correct file permissions. Security depends on how the site is maintained, not only on how content is stored.