What is FiveM development and what does a FiveM developer do?

FiveM extends Grand Theft Auto V into a moddable multiplayer framework. A FiveM developer writes Lua for CitizenFX, builds NUI in HTML or React, connects MySQL via oxmysql, integrates ESX or QBCore (or custom frameworks), and optimizes for OneSync population, entity limits, and server tick performance.

Do you work with ESX, QBCore, Qbox, and ox_lib on FiveM servers?

Yes. PiTyUs ships features across ESX Legacy-style economies, QBCore and Qbox stacks, ox_lib notifications and input dialogs, ox_inventory patterns where needed, and fully custom frameworks when design goals go beyond off-the-shelf templates.

Can you build NUI (in-game browsers) for FiveM?

NUI is a core specialty: React, Vue, or Vite-built panels, shops, MDTs, crafting UIs, and admin tools with accessible markup, responsive layouts, and tight Lua↔JS bridges using NUI callbacks and message contracts.

How do you approach FiveM server performance and OneSync?

Profiling-first: reducing redundant events, batching state updates, respecting entity and player bucket rules, tuning population zones, and validating database queries. The goal is stable frame time for clients and predictable server ms under peak concurrent players.

Do you offer website and landing page work for FiveM brands?

Yes. Next.js and modern static sites for server brands, waitlist pages, rules and lore sites, and documentation hubs—SEO-oriented structure, fast Core Web Vitals, and design systems that match in-game identity.

What is CitizenFX scripting and how does it relate to FiveM?

CitizenFX is the runtime behind FiveM. Scripts use Lua with FiveM natives for entities, players, and world state. Resources are packaged with fxmanifest.lua, loaded by the server, and coordinated with client and server contexts.

How much does a custom FiveM script cost?

Pricing is scope-based rather than fixed. A small standalone resource is very different from a multi-job economy, a full NUI inventory, or an ESX-to-QBCore migration. Share the framework, the feature list, and the deadline, and you get a clear estimate with milestones before any work starts—no surprise scope creep.

Can you fix, optimize, or refactor an existing FiveM server?

Yes—server audits and refactors are a core service. That includes OneSync and server-tick profiling, removing redundant events and net traffic, fixing resource conflicts, hardening exploitable handlers, cleaning up oxmysql queries, and upgrading aging ESX or QBCore stacks without breaking live gameplay for your players.

Should I use ESX or QBCore for my GTA V roleplay server?

Both are solid—the right choice depends on your resource library, your team's familiarity, and how much custom work you plan. QBCore and Qbox ship a more modern core and tooling out of the box; ESX Legacy has a huge ecosystem and battle-tested scripts. PiTyUs builds on all of them, and on fully custom frameworks when off-the-shelf templates limit your design.

Can you convert or bridge scripts between ESX, QBCore, and Qbox?

Yes. Framework conversions and bridges are common work: porting jobs, inventories, and economies between ESX and QBCore/Qbox, wiring ox_lib and ox_inventory compatibility layers, and keeping shared exports stable so the rest of your server keeps working during the migration.

Do you build custom FiveM HUDs, phones, and inventory UIs?

NUI is a specialty. Custom HUDs, phone apps, inventories, crafting tablets, police MDTs, and admin panels in React, Vue, or vanilla CEF—responsive, accessible, and tuned for 1080p in-game rendering with tight Lua↔JS callback contracts and optimistic UI where it helps.

How can I contact PiTyUs for a FiveM commission?

Join the PiTyUs Discord at https://discord.gg/64a26MK4jZ, open a support ticket there, or send a direct message to the user pityus on Discord. Describe your scope, framework (ESX, QBCore, or custom), timeline, and whether you need NUI, database work, or full-stack delivery. This site does not list a public email or GitHub for inquiries.

What is CRM Development (crmfivem.dev) and how is PiTyUs involved?

CRM Development is an affiliated FiveM platform at https://crmfivem.dev/ offering server-oriented packages, custom scripts, and ESX/QBCore ecosystem resources, with secure role-based access and a cohesive design system. PiTyUs leads the product UI and front-end engineering; the live site credits PiTyUs in the footer as the design partner.

Engineering

Translating FiveM scripts into other languages

Add translations to FiveM scripts: ox_lib’s locale system with locales/*.json and the ox:locale convar, ESX Legacy Translate/TranslateCap, QBCore’s Locale and Lang:t, placeholders, NUI translations, fallbacks, and a workflow for community translations.

Updated 11 Sept 20269 min readBy PiTyUs · FiveM developer

Overview

FiveM servers run in dozens of languages, and a script that ships only English text loses most of its possible buyers. Moving text into locale files is a small change that makes your resource translatable by the community — and easier to maintain.

ox_lib locales

fxmanifest.lualua

shared_script '@ox_lib/init.lua'
ox_lib 'locale'

files { 'locales/*.json' }

locales/en.jsonjson

{
  "stored": "Vehicle %s stored",
  "no_money": "You need $%d"
}

client.lualua

lib.notify({ description = locale('stored', plate) })

Owners pick the language with setr ox:locale de in server.cfg; missing languages fall back to English. More on ox_lib: the ox_lib guide.

ESX and QBCore

Framework	Files	Usage
ESX Legacy	`locales/en.lua` with `Locales['en'] = { ... }`	`TranslateCap('key')` / `Translate('key')`
QBCore	`locales/en.lua` with `Locale:new({ phrases = ... })`	`Lang:t('key', { value = x })`

For multi-framework scripts, ox_lib’s system is the simplest single choice — see framework bridges.

Translating the UI

client.lualua

SendNUIMessage({ action = 'locale', data = lib.getLocales() })

Send the whole table once when the UI starts and look strings up in JavaScript, instead of sending text with every message. NUI patterns: NUI to Lua communication.

A translation workflow

Keys that describe meaning (impound_fee), not English text.
Placeholders for numbers and names — word order differs between languages.
Accept community pull requests for new locale files; credit translators.
Keep all locale files in escrow_ignore.

Frequently asked questions

How do I add translations with ox_lib?

Add ox_lib 'locale' to the fxmanifest, create locales/<lang>.json, and call locale('key'). Owners choose the language with setr ox:locale <code>.

How do ESX scripts translate text?

With locale tables and TranslateCap('key') / Translate('key').

How do QBCore scripts translate text?

With Locale:new({ phrases = ... }) and Lang:t('key').

How do I translate my NUI?

Send the locale table to the UI once and look strings up in JavaScript.

Need this built, not just explained?

Ten years of FiveM work, from Lua to NUI

Custom resources, React NUI, ESX / QBCore / Qbox integration, OneSync performance audits and security reviews — plus the websites and SEO around your server brand.

Talk on Discord See services

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