MDisBetter vs Marker: Hosted vs Self-Hosted PDF to Markdown
Marker is a well-known open-source PDF-to-Markdown library that runs locally on your own hardware. MDisBetter is a hosted web converter. The clearest difference between them is not a score: it is whether you want to operate the conversion infrastructure yourself. This page covers that operational difference, the cases where each one fits, and how to compare output quality on your own documents.
How to compare output quality yourself
Output quality depends on your documents, so test both tools on a sample of the PDFs you actually handle, for example academic papers, reports and scanned documents. Run both at default settings and score each output on:
- Heading detection: do
##markers map to actual sections? - Table fidelity: do GFM tables match source row/column structure?
- Equation handling: do equations come through as valid LaTeX?
- OCR character error rate: on scanned documents only
- Reading order: does multi-column text flow correctly?
Scoring each dimension from 0 to 10 per document makes differences visible while keeping every output small enough to inspect by hand. How to benchmark PDF to Markdown converters walks through the full method.
Where Marker fits best
Equation-heavy documents
Marker uses a specialized math model trained specifically on equation recognition. If your documents are dense with math (physics papers, theoretical CS), give equations a heavy weight when you compare the two tools on your own files.
Steady volume on your own hardware
Once Marker's environment and model weights are in place on a GPU you already own, each extra document costs you only compute. MDisBetter needs nothing installed, which matters most when documents arrive occasionally rather than in a steady stream.
Air-gapped data
Marker runs entirely on your hardware. No data ever leaves your network. For workloads where data residency is a hard requirement (classified material, certain regulated industries), Marker is the only one of the two that can work at all.
Where MDisBetter fits best
No infrastructure to run
MDisBetter is a web tool: drop a PDF in the browser, convert, and download the .md file. Heading levels are preserved and tables are rebuilt as Markdown tables. There is no Python environment, GPU driver or model download to manage, and updates reach you without any action on your side.
Operational comparison
This is where the two tools really diverge:
| Dimension | MDisBetter | Marker |
|---|---|---|
| Setup | A free account and a browser | Python environment, GPU drivers, model download |
| Ongoing maintenance | None on your side | Model updates, dependency upgrades |
| Compute cost | Credits per conversion, paid plans for more volume | Your GPU time plus ops time |
Which one costs less depends on your volume: price MDisBetter's plans against your GPU time and engineering hours at your real monthly page count. Self-hosting Marker tends to pay off at high volume, and only if you have the engineering capacity to operate it.
Recommendation
Pick Marker when:
- Your data must never leave your network (regulated industries, air-gapped requirements)
- You process high volumes and have the ops capacity to support self-hosting
- You need to fork the conversion engine and customize behavior
- You want a converter you can call from your own code: Marker is a library, MDisBetter is a web tool
Pick MDisBetter when:
- You want PDF to Markdown without operating infrastructure
- Engineering time is scarcer for you than conversion budget
- You need consistent updates without managing them
Both are good products, and the choice is mostly about your operational profile. Before you commit, run a few of your own documents through both.
For the side-by-side feature table, see /compare/mdisbetter-vs-marker.