Convert C to Markdown.
Drop a .c, .cpp or .h file and get Markdown with the source wrapped in a fenced code block. It runs entirely in your browser, so your code never leaves your device.
Drag & drop your files
or
Optimize for AI & RAG
Extra cleanup for LLM ingestion: strip HTML, fix smart quotes, tidy Unicode and spacing.
Add YAML front matter
Prepend a metadata block (title, source, date, word & token counts) for knowledge bases and RAG.
Add table of contents
Build a linked index from the headings. Handy for long documents.
Export RAG chunks (.json)
Split the result into retrieval-ready chunks. Download per file from the result panel.
Most converters quietly upload your documents to a server. This one physically can't.
Source code,
shared cleanly.
C and C++ headers (.h), macros and preprocessor directives are kept exactly as written, so the code in your docs reads the same as it does in your editor. Ideal for systems code, drivers and snippets in docs and issues. The .c, .cpp and .h extensions are all recognized.
#include <stdio.h>
int main(void) {
printf("Hello\\n");
return 0;
}
```c
#include <stdio.h>
int main(void) {
printf("Hello\\n");
return 0;
}
```
Everything you
actually need.
C and C++ files in, a clean fenced block out, with no server and no account anywhere.
It never leaves your browser
Your .c, .cpp or .h file is read on your own device. Nothing is uploaded to any server, ever.
# Heading
- point one
3 chunks
AI & RAG ready
Optional cleanup, YAML front matter, a table of contents and RAG chunk export.
Works offline
Once the page has loaded you can switch off your connection and it keeps converting.
```c
printf("hi");
```
Code, preserved
The source is wrapped verbatim in a fenced block tagged c, so braces, includes and indentation survive byte for byte.
Unicode safe
Accents, symbols and non-Latin scripts come through intact as UTF-8.
Free, and unlimited
No sign-up, no quotas, no watermarks. Convert one file or a thousand; it all runs the same way, on your own device.
Nothing is
lost.
Honest about what comes through, and what stays put for C and C++. These are the same notes the Formats list shows, so the page never drifts from what the converter really does.
Kept
2- Every line of source, byte for byte
- A fenced block tagged c or cpp
Preserved
2- Preprocessor directives and includes
- Indentation, comments and unicode
int main(void) {
return 0;
}
#include <stdio.h>
#define MAX 100
/* a comment */
nested indentation
C questions,
answered.
Everything worth knowing before you drop in a C or C++ file.
Other converters.
Working with more than C source? These convert the same way: privately, in your browser.
HTML to Markdown
.html · .htm
Web page markup.
Plain text to Markdown
.txt
Unformatted text files.
LaTeX to Markdown
.tex · .latex
LaTeX typesetting source.
reStructuredText to Markdown
.rst
Python documentation markup.
AsciiDoc to Markdown
.adoc · .asciidoc
AsciiDoc technical writing.
Org-mode to Markdown
.org
Emacs Org-mode documents.
Textile to Markdown
.textile
Textile lightweight markup.
BBCode to Markdown
.bbcode
Forum BBCode markup.