How To Use Julia Formatter & Validator
📝 Step 1: Enter Julia Code
Paste your Julia script in the input area. Supports functions, loops, conditionals, and multiple statements.
⚙️ Step 2: Choose Julia Version
Select your Julia version (1.9+, 1.6 LTS, or 1.0) for accurate syntax validation.
🔧 Step 3: Format or Validate
Click "Format Julia" to beautify your code with proper indentation. Click "Validate Julia" to check for syntax errors.
📋 Step 4: Copy or Download
Use the "Copy" button to copy formatted Julia to clipboard, or "Download" to save as .jl file.
💡 Pro Tips
- Use the Sample button to load an example script
- Validation checks for: missing
end, incorrect syntax, unmatched parentheses, invalid operators
- Formatting preserves comments and string literals
- Works with complex structures including modules, functions, and macros
🔍 Example
# Before formatting:
function fib(n)
if n <= 1
return n
else
return fib(n-1) + fib(n-2)
end
end
# After formatting:
function fib(n)
if n <= 1
return n
else
return fib(n-1) + fib(n-2)
end
end
Frequently Asked Questions
What Julia versions are supported? ▼
We support Julia 1.9+, 1.6 LTS, and 1.0. Each version has its own validation rules for keywords, functions, and syntax (like `begin`/`end` blocks, struct definitions, etc.).
Does it validate all Julia syntax? ▼
The validator checks for common syntax errors including: missing `end` keywords, unmatched parentheses/brackets, invalid operators, incorrect function definitions, and basic semantic rules. It's designed for standard Julia operations.
What formatting options are available? ▼
The formatter adds proper indentation (2 or 4 spaces, configurable), line breaks after keywords (`function`, `if`, `for`, etc.), aligns assignments, and preserves comments and string literals. It follows common Julia style guidelines.
Can I format multiple functions or modules? ▼
Yes! The tool handles entire scripts with multiple functions, modules, and statements. Each structural element is formatted independently while maintaining overall readability.
Is my Julia code secure? ▼
Absolutely. All processing happens in your browser. Your Julia code is never sent to our servers. It's completely client-side for privacy and security.
What are common Julia errors it detects? ▼
Common errors include: missing `end` in blocks, incorrect `if`/`else` syntax, unmatched brackets in array comprehensions, invalid operator usage, and incorrect macro invocations.
Does it work with Julia macros? ▼
Basic macro syntax is supported. The validator recognizes `@macro` invocations, though it doesn't expand them. Formatting will preserve macro calls with proper spacing.
How accurate is the validation? ▼
The validator catches most syntax errors but may not catch type-related or scope issues (like undefined variables) since it doesn't execute the code. It's great for syntax checking and quick formatting.