DEVELOPERS // FIVEM // NUI
Find the break
before the browser does.
Load a FiveM NUI resource locally and trace the parts that must agree: fxmanifest.lua, HTML, CSS, JavaScript, Lua callbacks, message actions, and assets.
LOCAL RESOURCE SCAN
Bring the whole
resource.
Choose a resource folder, load a ZIP, or paste a log/config snippet. Everything is read in this browser; files are not uploaded or sent to an AI service.
or paste a startup error, manifest, or small file below
No resource loaded yet. Nothing leaves this browser.
ACTIONABLE FINDINGS
NUI report
RESOURCE MAP
What connects to what.
Manifest entries, page assets, browser callbacks, and Lua registrations are shown as a readable local map.
SAFE PREVIEW
See the interface.
This preview renders the selected HTML and local CSS without FiveM APIs. Browser scripts are disabled here so the preview cannot affect the page or your files.
WHAT IT CHECKS
Useful checks for the messy bits.
Finds the NUI page, declared files, client/server scripts, and missing resource paths.
Checks HTML, CSS, image, font, and script references without executing untrusted code.
Compares JavaScript NUI requests with Lua RegisterNUICallback names and flags duplicates.
Maps SendNUIMessage actions to browser message listeners so silent UI failures are easier to spot.