Extract syntax-highlighted code blocks from programming books, API specifications, and whitepapers with preserved indentation and removed line numbers.
100% In-Browser Conversion — Your Files Are Never Uploaded
Drag & Drop your PDF document here
or browse files on your device
Eliminate the tedious chore of manually deleting printed line numbers and re-indenting broken tab stops:
1 async function fetchUserData(userId: string): Promise<User> {
2 const response = await fetch(`/api/users/${userId}`);
3 if (!response.ok) {
4 throw new Error("Failed to fetch user");
5 }
6 return response.json();
7 }```typescript
async function fetchUserData(userId: string): Promise<User> {
const response = await fetch(`/api/users/${userId}`);
if (!response.ok) {
throw new Error("Failed to fetch user");
}
return response.json();
}
```
When publishers typeset code blocks for print or digital PDF distribution, they frequently insert decorative elements: printed line numbers, stylized smart quotes (“ ” instead of " "), and non-breaking spaces that break interpreter parsers when pasted into a terminal or IDE.
Everything you need to know about format extraction, privacy, and markdown compatibility.
The engine checks font metadata for monospace character sets (such as Consolas, Fira Code, Courier New, Menlo, and Source Code Pro). When a block of consecutive text lines uses monospace fonts, it is tagged as a candidate code block and wrapped with triple backtick (```) fenced code blocks.
Yes. Technical programming books and PDF documentation frequently include line numbers along the left margin. Our parser isolates the left number channel, verifies the sequential numeric progression, and strips them so the extracted code can be copied and run in an IDE without compilation syntax errors.
The parser evaluates common keywords (e.g., 'def', 'async function', 'import', 'struct', 'fn', 'package main') against known language syntax signatures to automatically append tags like ```python, ```typescript, ```rust, or ```go.
Yes. Python and YAML depend strictly on 2-space or 4-space indentation. The engine measures character X-offsets relative to the code block left margin to reconstruct exact whitespace indents.
Explore dedicated documentation for other document formats and developer pipelines.
Extract code and documentation programmatically with our high-speed Python bindings.
Generate README.md docs with syntax-highlighted fenced code blocks directly from PDF specs.
Batch extract code snippets from entire directories of programming e-books.