Source Code Viewer
Inspect and view source code online. Highlight HTML, CSS, and JS with line numbers with zero server uploads.
What is the Source Code Viewer?
Source code viewing parses and syntax-highlights raw programming files across diverse language grammars using deterministic client-side tokenization. The syntax engine inspects lexical tokens to apply high-contrast keyword coloring, line numbering, and indentation guidelines without executing code. This equips security analysts and software engineers with a secure, zero-execution environment to inspect untrusted source files and audit proprietary scripts safely.
Lexical Tokenization Specifications
- Language Grammars: JavaScript, TypeScript, Python, Go, Rust, Java, C/C++, HTML, CSS, SQL, Shell, YAML
- Tokenization Engine: Deterministic in-memory AST tokenization with high-contrast syntax highlighting
- Code Metrics: Real-time line numbering, character counting, and token frequency breakdown
Display & Security Specifications
- Theme Customization: High-contrast dark and light themes with adjustable font scaling and ligature support
- Security Sandbox: Zero-execution sandbox preventing script execution and cross-site scripting risks
- Export Formats: 1-click plain text copy and syntax-highlighted HTML snippet export
How to Use the Source Code Viewer
Follow these 3 actionable steps for deterministic developer workflows.
1. Paste Source Code
Paste raw code snippets or drop text-based programming files into the viewer.
2. Select Language Dialect
Choose the programming language grammar or enable automatic dialect detection.
3. Inspect Syntax & Tokens
Audit highlighted syntax, line numbers, and token structure with zero execution risk.
Architecture & Transformation Comparison
Client-side in-memory AST execution compared with remote cloud backend services.
| Evaluation Criteria | Client-Side In-Memory Engine | Remote Cloud Service Endpoints |
|---|---|---|
| Data Privacy & Isolation | 100% In-Memory (Zero network payload transmissions) | Transmitted over HTTP/HTTPS and logged on remote hosts |
| Execution Latency | Sub-millisecond instant AST parsing and evaluation | Subject to network round-trip time and server queue delays |
| Processing Throughput | Uncapped throughput bounded only by client device memory | Artificial request rate limits and payload size ceilings |
| Offline Availability | Fully operational offline via service worker caching | Unavailable without continuous active internet connection |
Frequently Asked Questions
Common questions about using our Source Code Viewer.