Features Protection Layers Documentation Pricing

Luau Obfuscation,
Engineered for Real Projects.

Industry-grade Luau protection built around a custom register-based virtual machine. Transform your source into proprietary bytecode that executes inside a purpose-built VM, obscuring your original control flow and logic at runtime.

xemilabs.cloud — obfuscator ● BUILDING
Layers
Settings
Output
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Security
OBFUSCATED OUTPUT — PREVIEW
-- protected by xemifuscator [ https://xemilabs.cloud ] return({S6=function(f,X,O,J,c,F,i) local m,Y; for D=0B1011111,0X234,0X6e__ do if not(D>0X0CD) then if D~=0x5f then c=O[0x35]()-43600; continue; else m,Y=f:_6(X,O,i); if m==47222 then continue; elseif m==-0X2 then return -0X2,c,F,J,Y; end; end; end; end; O[0B100101]=nil; O[0B100011]=f.h; return nil,c,F,J; end,...})

8 Layers of Hardened Protection

Each layer independently transforms your Luau source into an unreadable, tamper-resistant form. Stack them together for maximum security.

LAYER 01
String Encryption

All string literals are XOR-encrypted with unique per-script keys and decrypted at runtime. Even if a decompiler recovers the bytecode, the strings remain cryptographically obscured.

LAYER 02
Control Flow Flattening

Restructures function logic into opaque switch-based dispatchers, destroying readability. The original execution order is encoded into a dispatch table that cannot be statically followed.

LAYER 03
Constant Obfuscation

Numeric and boolean constants are split, encoded, and reassembled through arithmetic chains at runtime. No meaningful literal value is ever stored directly in the output bytecode.

LAYER 04
Anti-Debug & Tamper

Injects runtime checks that detect debugging tools, modification attempts, and unauthorized access. Any tampering triggers silent self-termination before sensitive logic can be exposed.

LAYER 05
VM Virtualization

Binds the entire script inside a custom register-based VM and interpreter loop. All logic, registers, and opcodes execute inside an isolated virtual environment, eliminating static analysis completely.

LAYER 06
Junk Code Injection

Inserts semantically neutral dead code and fake branches to bloat and mislead decompilers. The injected noise is indistinguishable from real logic without full execution tracing.

LAYER 07
Identifier Renaming

Strips all meaningful variable and function names, replacing them with opaque, randomized tokens. No symbol in the output carries any semantic relationship to the original source.

LAYER 08
Dead Code Elimination

Removes unused code paths and optimizes the obfuscated output for minimal overhead and max stealth. The final output is compact, performant, and leaves no structural footprint of the original.

01 / 08

Simple. Fast. Powerful.

Upload your Luau script, toggle your protection layers, and get obfuscated output in milliseconds. No setup required.

xemilabs — cli
$ xemilabs obfuscate input.luau --layers 8 [info] Loading source file... [info] Applying 8 protection layers... [info] String Encryption ✓ [info] Control Flow Flattening ✓ [info] Constant Obfuscation ✓ [info] Anti-Debug Injection ✓ [info] VM Virtualization ✓ [info] Junk Code Injection ✓ [info] Identifier Renaming ✓ [info] Dead Code Elimination ✓ [success] Output saved: output_obf.luau (0.83ms) $ _
before → after
-- Before local x = 1 local y = 2 print(x + y) -- After return({S6=function(f,X,O,J,c,F,i) local m,Y; for D=0B1011111,0X234,0X6e__ do if not(D>0X0CD) then if D~=0x5f then c=O[0x35]()-43600; continue; else m,Y=f:_6(X,O,i); if m==47222 then continue; elseif m==-0X2 then return -0X2,c,F,J,Y; end; end; end; end; O[0B100101]=nil; O[0B100011]=f.h; return nil,c,F,J; end,...})

Built for Serious Developers

XemiLabs.cloud is more than just an obfuscator — it's a complete protection platform.

Simple, Honest Pricing

Start free. Upgrade when your project outgrows it. No hidden limits, no surprise fees.

Free
$0/mo
Free forever — no credit card required
For personal projects and testing the obfuscator.
  • ✓ Virtual Bytecode
  • ✓ Anti-Tamper Protection
  • ✓ String Encryption
  • ✓ Integrity Checks
  • ✓ Control Flow Flattening
  • ✓ 35KB script source limit
  • ✓ 5 obfuscations per week
  • ✗ Commercial use
  • ✗ Obfuscate for others
Business
$30/mo
For teams, services, and commercial use
Full API access. Unlimited usage. Obfuscate for clients.
  • ✓ Everything in Pro
  • ✓ Custom API tailored to your service
  • ✓ Unlimited obfuscation usage
  • ✓ Commercial use allowed
  • ✓ Obfuscate for others / clients
  • ✓ White-label support
  • ✓ Priority email & Discord support
  • ✓ SLA uptime guarantee

Full plan comparison, FAQ and billing details live on the pricing page.

// Xemi Vault

Code protected.
Delivered only after verification.

Your protected script never sits in the open. It lives encrypted inside Xemi Vault cold storage and is only released to a client once the environment passes verification — no leaks, no scraped payloads, no cached copies.

300 KBFree Vault storage, every plan
Cold storageEncrypted at rest, off the edge
Env verifiedDelivery gated per request

Questions, Answered

Everything developers usually ask before moving their code into XemiLabs.

Vault is encrypted cold storage for your protected scripts. Instead of handing out a file, you store the obfuscated build in Vault and it is streamed to the executing client only when that request checks out.

Before any code is released, we fingerprint the requesting environment — origin, runtime signals, and your configured rules. If it doesn't match what you allow, no bytecode leaves the Vault.

Every account, including the free plan, gets 300 KB of Vault storage at no cost. Paid plans scale that up along with obfuscation limits.

Vault pairs with VM virtualization, anti-tamper and integrity checks, so what reaches memory is virtual bytecode, not readable Luau. Tampering trips the checks and execution halts.

No. Verification adds a few milliseconds and the payload is served from a low-latency edge fetch after the cold-storage read.

Commercial use and obfuscating for clients are available on the Business plan. Full details live on the pricing page.

Ready to Lock Down Your Code frimn skids?

Join tons of developers protecting their Roblox scripts with XemiLabs.cloud. Get started free — upgrade when you need more power.