# MDX vs Headless CMS: When Git Files Beat an Admin Panel > Answers the common question of MDX vs headless CMS — when flat MDX files in a git repo are the better choice and when a full headless CMS is worth the overhead. - **Published:** 2025-08-17 - **Author:** Clixo - **Reading time:** 6 min read - **Tags:** mdx, headless-cms, content-systems, cms-vs-mdx - **Canonical URL:** https://clixo.sh/blog/mdx-vs-headless-cms-when-to-use-each If you are building a content-driven site on Next.js, you will hit this question early: should you store content as MDX files in your git repository, or pull it from a headless CMS? The internet has strong opinions on both sides. Most of those opinions skip the part where the answer depends almost entirely on *who is writing the content* and *how often it changes*. Here is a clear breakdown of when each approach is the better choice. ## What MDX Files in a Repo Actually Give You MDX is Markdown with the ability to import and render React components. Stored as files in your repository, MDX content benefits from everything git gives you: version history, diff reviews, pull request workflows, branch-based experimentation, and rollback on any commit. For a team of engineers writing documentation, a company blog maintained by developers, or a content archive that rarely changes, this is genuinely superior to a CMS admin panel. Changes go through code review. History is permanent and searchable. There is no separate system to maintain. The development experience is also tight: write MDX, run the dev server locally, see the rendered output immediately, push to git, and the content deploys with the next build. Zero round trips to an external API. ## What a Headless CMS Actually Gives You A headless CMS provides a purpose-built editing interface for non-technical contributors. Editors do not write Markdown. They do not open pull requests. They work in forms that match the content model — structured fields, image uploaders, rich text editors with predictable formatting behavior. The CMS also decouples content updates from deployments. An editor can publish a corrected article on a Sunday morning without a developer needing to merge a PR and trigger a build. Depending on the rendering strategy, changes can be live within seconds. For content operations with multiple non-technical contributors, a publishing schedule, an editorial review workflow, and content that updates frequently, a headless CMS is not overhead — it is necessary infrastructure. ## The Core Question: Who Is Editing and How Often? **Use MDX files in git when:** - Engineers are the primary content authors - Content changes infrequently and a PR process is acceptable latency - You want zero external dependencies and full content ownership without a third-party service - The team is comfortable with git and Markdown - The site is primarily documentation, changelogs, or developer-facing content **Use a headless CMS when:** - Non-technical editors need to create and update content independently - Content changes frequently — multiple times per week or per day - An editorial review step before publication is required - Content needs to be published on a schedule, independent of code deployments - The same content needs to serve multiple frontends (website, mobile app, partner integrations) ```mermaid flowchart TD A["Who edits content?"] --> B{"Engineers only?"} B -- Yes --> C["MDX in git repo"] B -- No --> D{"Non-technical editors?"} D -- Yes --> E["Headless CMS"] D -- No --> F{"Updates multiple times per week?"} F -- Yes --> E F -- No --> C ``` ## The Hybrid Model Many production content systems use both. Documentation and developer guides live as MDX files in the repo — engineers write them, they go through code review, and they deploy with the codebase. Marketing content, blog posts authored by non-technical team members, and frequently updated landing page copy live in a headless CMS. The frontend fetches from both sources. This is not an unusual setup. It is often the most pragmatic one. The key is being deliberate about which content belongs where, rather than letting convention or convenience decide. ## MDX vs Headless CMS: Frequently Asked Questions **Can I get the benefits of MDX with a headless CMS?** Some headless CMS platforms (Tina CMS, Keystatic) store content as MDX files in your git repo and provide a CMS editor on top. You get the editorial UI and the git-backed storage. The tradeoff is that these platforms are less mature than the major headless SaaS options and impose their own constraints on how content is structured. **What about git-based CMS platforms like Decap or Outstatic?** These are a middle path — a CMS admin panel backed by git commits rather than a hosted database. Editors use a GUI, changes are committed to git, and there is no external API to query at runtime. This works well for small teams where the git workflow is acceptable but editors should not need to learn Markdown directly. **Is MDX content harder to query and filter?** Yes. With MDX files, content querying is done at build time by reading the filesystem, parsing frontmatter, and building an in-memory index. At scale, this gets slow. Tools like Contentlayer or Velite abstract this, but they add a build-time processing step. A headless CMS gives you query and filter capabilities via API with far less setup at the cost of an external dependency. **Does MDX content get indexed by search?** MDX files are not indexed by an external search engine by default. You need to build the search index yourself at build time (using something like FlexSearch or Fuse.js) or integrate a third-party search service. Headless CMS platforms generally have search built in or offer first-party integrations with Algolia and similar tools. **Can I migrate from MDX to a headless CMS later?** Yes, and it is a common path. Many teams start with MDX files for simplicity and migrate to a headless CMS when the editorial team grows or the publishing frequency increases. The migration requires writing import scripts to ingest the MDX frontmatter and body into the CMS schema, setting up redirects if slug formats change, and training editors on the new interface. Plan two to four weeks of engineering time for a typical migration. --- Neither MDX files nor a headless CMS is universally the right answer. The right answer is the one that fits your team's actual workflow. Start with the simplest approach that works, and change it when the friction becomes real rather than theoretical. If you are building a content system and want a second opinion on which architecture fits your situation, [Clixo has built both](https://clixo.sh/#contact) and can give you an unbiased recommendation. --- Clixo · 1141 W Bryn Mawr Ave, Itasca, IL 60143, US · [hello@clixo.sh](mailto:hello@clixo.sh) [Start a build](https://clixo.sh/#contact) · [All services](https://clixo.sh/services) · [Agent guide (llms.txt)](https://clixo.sh/llms.txt)