For a new FiveM YMAP or an MLO placement workflow, start with CodeWalker for the world and map-data work. Keep OpenIV available when a documented archive or conversion workflow specifically requires it. They overlap in some file-inspection tasks, but neither replaces Blender modeling or a server test.
The distinction is the work you need to perform, not which tool should own every file in the project. Keep the CodeWalker author repository and OpenIV publisher site as your software sources. This site is independent of both projects.
Compare the work, not just the interface
| Your task | Practical starting point | Check before proceeding |
|---|---|---|
| Inspect placements in the GTA V world | CodeWalker | Correct game data, selection mode and target edition |
| Create and adjust a YMAP | CodeWalker project workflow | Archetypes, transforms, flags and extents |
| Follow an OpenIV-specific archive workflow | OpenIV | Exact instructions, supported format and a separate mod workspace |
| Use the historical Menyoo/Map Editor converter | Its documented conversion chain | XML schema, converter age and supported entities |
| Build an original interior mesh | Blender with Sollumz | Asset hierarchy, materials, collision and export compatibility |
| Prove an MLO works on a server | Neither desktop viewer alone | Fresh resource startup and gameplay acceptance |
This is a workflow recommendation for the site’s mapping focus, not a claim that either application has no other features. Inspect the documentation for the release you actually use.
CodeWalker’s role in a map project
CodeWalker combines world inspection with project-based editing of supported game data. For a placement exercise, keep a small .cwproj workspace containing the relevant YMAP and any custom definitions you need to inspect. Identify the exact archetype and transform rather than selecting an attractive-looking object without recording its dependency.
Our first-YMAP tutorial provides the beginner route. The file-format reference explains why a placement file, an archetype definition and a visible mesh are different deliverables.
OpenIV’s place in the workflow
OpenIV is an archive and asset-workflow tool from its own publisher. Use it when the source instructions specify an OpenIV operation and format. Do not assume that a similarly named menu action produces the same XML dialect as another tool.
For example, the original Map Editor & Menyoo converter page documents an openFormats-to-OpenIV conversion chain. That is a concrete reason to use OpenIV in that particular historical workflow. It does not establish that every current Sollumz or CodeWalker export should be routed through it.
Keep experimental archive changes separate from your original game files. An archive editor should not become your only source repository; save original editable project files outside the final game package.
XML is not a universal interchange guarantee
Two files can both be XML and still use incompatible structures. A filename extension describes only part of the contract. Check which application produced the file, which format the receiving importer accepts and whether the round trip preserves the data your project uses.
The XML-to-YMAP guide distinguishes Menyoo scenes, Map Editor saves, CodeWalker YMAP XML and native YMAP data. Use a small known source to test a conversion before trusting a whole map to it.
A minimal workflow for this site
Start with the original three-prop source exercise. Arrange or inspect the placements, check them in CodeWalker against real assets and save native output. Use the manifest helper to prepare a small test resource, then perform the actual FiveM checks.
For an MLO, add Blender/Sollumz and the room, portal and collision work before native compilation. The MLO tutorial describes those handoffs. Neither a successful archive import nor a correctly rendered room screenshot replaces that sequence.
Keep edition compatibility explicit
Do not infer Enhanced support from an old tool screenshot or a generic “GTA V” label. Record the game edition and build, the tool versions and any conversion step. Follow the Legacy/Enhanced planning note and the linked Cfx.re documentation for the target you intend to ship.
Choose the smallest set of tools that performs your documented workflow. Add another tool to solve a specific format or authoring problem, not simply because it appears in every historical modding tutorial.