✨ 100% Free • Client-Side Security • Zero Server Uploads

Convert Code to PDF Online Free (Syntax & Line Numbers)

Convert source code to clean, syntax-highlighted PDF documents with line numbers and custom IDE themes. QuickRectify supports C, C++, Python, JavaScript, Java, and 50+ languages with zero watermarks and 100% in-browser privacy.

👥 Built for Students, Pros & Teams • 🔒 100% Local • ⚡ WebAssembly Speed
code-to-pdf-converter.cpp
C++ / C / Python / Java ✓ Line Numbers ON No Watermark
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// Convert Source Code to Formatted PDF with Syntax Highlighting & Line Numbers
#include <iostream>
#include <vector>
using namespace std;

int main() {
  // QuickRectify generates clean vector PDFs without watermarks
  cout << "Converting C, C++, Python & Java code to PDF..." << endl;
  return 0;
}
Paste code snippet or drop source files (.cpp, .c, .py, .java, .js, .ts) Generate Code PDF →
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How to use Code to PDF online for free

Follow these simple steps to process your file in seconds

1

Paste or upload source code: Paste your code snippet directly or upload source files in C, C++, Python, JavaScript, Java, Rust, Go, SQL, HTML, and 50+ languages.

2

Select language & theme: Choose your programming language for precise syntax tokenization, and select an editor theme (VS Code Dark, GitHub Light, Monokai).

3

Toggle line numbers & formatting: Enable line numbers, adjust font size, configure tab widths, and toggle automatic soft wrapping.

4

Export syntax-highlighted PDF: Click 'Generate PDF' to compile a crisp vector PDF document with no watermarks, ready for code reviews or academic homework.

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50+ Language Lexers (C, C++, Python)

Grammar-based tokenization for C, C++, Python, JavaScript, TypeScript, Java, Rust, Go, PHP, Ruby, SQL, and Bash.

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Line Numbers & Soft Wrap

Renders crisp line numbers in a dedicated left gutter with consistent baseline alignment and smart pagination.

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IDE Color Themes (Dark & Light)

Format code using industry-standard color schemes including GitHub Light, VS Code Dark+, Monokai, and One Dark.

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100% Client-Side Privacy

Lexical parsing and PDF compilation take place inside local browser memory, ensuring proprietary code never leaves your device.

Why Use QuickRectify Code to PDF?

Submitting programming assignments for academic coursework, preparing software documentation for patent applications, or printing code excerpts for formal engineering audits requires professional presentation. Taking messy screenshots from code editors results in unsearchable, blurry images with misaligned line breaks. Printing directly from browser print dialogs often breaks color syntax and leaves awkward page margins. QuickRectify's Code to PDF converter formats source code into publication-grade documents.

Our lexical engine parses your code using language grammar specifications covering over 50 programming and markup languages, including Python, JavaScript, TypeScript, C, C++, Java, Rust, Go, Swift, SQL, and HTML/CSS. Keywords, strings, comments, function definitions, and variables are tokenized and assigned accurate syntax highlighting based on popular IDE themes like GitHub Light, VS Code Dark+, and Monokai.

Formatting is optimized specifically for standard paper layouts. Line numbers are rendered in a dedicated left gutter with consistent baseline alignment. Long statements can be configured with soft wrapping to avoid horizontal clipping while preserving original indentation levels. The engine handles pagination cleanly, ensuring code blocks flow logically from page to page without orphaned lines.

Security is vital when dealing with intellectual property and source code. All lexical analysis, styling, and PDF compilation execute locally within your browser using WebAssembly. Your proprietary algorithms, API keys, and corporate repositories never leave your machine. Generate beautiful code PDFs quickly, privately, and completely free.

QuickRectify vs Other Online PDF Tools

Compare our privacy-first architecture with traditional cloud-based document converters.

Capability QuickRectify (Code to PDF) Traditional Cloud Converters (iLovePDF, Smallpdf, PDF24)
Syntax Highlighting Precision Grammar-based lexical tokenization matching top desktop IDEs Plain monochrome text printouts or crude regex highlighting
Line Numbers & Pagination Dedicated line number gutter and smart page-break preservation No line numbers or awkward margin cuts
Source Code Privacy 100% In-Browser execution; proprietary algorithms never leave your RAM Uploads source code files to remote third-party cloud servers
Restrictions & Branding 100% Free with zero line limits, watermarks, or subscription paywalls Stamps promotional footers or caps code files at 50-100 lines
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Frequently Asked Questions

Quick answers to common questions about Code to PDF

How to convert code to PDF with line numbers?

Paste your code into QuickRectify's Code to PDF editor, toggle 'Line Numbers' on, select your programming language, and click 'Generate PDF'. The resulting document renders crisp line numbers in a dedicated left gutter with zero watermark.

Can I convert C and C++ source code to PDF?

Yes. QuickRectify provides dedicated C and C++ lexers with full grammar highlighting for pointers, macros, structs, headers, and standard template libraries (STL).

Is this code to PDF converter completely free without watermarks?

Yes. QuickRectify Code to PDF is 100% free with no watermarks, no account signup, and no line limits. Your code stays private in your browser memory.

Which programming languages are supported for syntax highlighting?

QuickRectify supports over 50 languages, including Python, JavaScript, TypeScript, C, C++, C#, Java, Go, Rust, PHP, Ruby, Kotlin, Swift, SQL, HTML, CSS, Shell/Bash, and JSON/YAML.

Is the text in the generated PDF selectable and searchable?

Yes. The generated PDF contains true vector typography rather than static screenshot images. Code comments, variables, and keywords remain fully selectable, copyable, and searchable.

Does QuickRectify keep a copy of my proprietary source code?

No. The entire tokenization and PDF generation process runs locally in your browser memory. Your code is never uploaded to any external server or stored in any database.

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