Convert source code to Markdown.
Drop a file in almost any programming language and get Markdown that keeps every line of source intact in a fenced block. It all runs 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.
One converter for
every language.
Kotlin, Swift, Scala, Haskell, Lua, Perl, R, Dart, Elixir, Clojure and more than 200 other languages all convert the same way. The language is read from the file extension and used as the fence tag, so the code renders with syntax highlighting.
fun main() {
println("Hello")
}
```kotlin
fun main() {
println("Hello")
}
```
Everything you
actually need.
A source file in, a clean fenced block out, tagged with its language, with no server and no account anywhere.
It never leaves your browser
Your source 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.
```swift
print("hi")
```
Code, preserved
Every line is kept verbatim in a fenced block tagged with the language, so indentation, comments and formatting all stay exactly as written.
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 for source code. A recognized file is wrapped verbatim in a fenced block, so the conversion is faithful to the byte and never reformats your code.
Kept
2- Every line of source, byte for byte
- A fenced block tagged with the language
Preserved
2- Indentation, blank lines and comments
- Unicode and special characters
fun main() {
println("Hello")
}
Code questions,
answered.
Everything worth knowing before you drop in a source file.
Other converters.
Working with more than source files? These convert the same way: privately, in your browser.
SYLK to Markdown
.slk
Legacy symbolic-link spreadsheets.
Data Interchange to Markdown
.dif
DIF tabular data exchange.
PowerPoint to Markdown
.pptx
Microsoft PowerPoint slide decks.
OpenDocument Presentation to Markdown
.odp · .fodp
LibreOffice Impress decks.
PDF to Markdown
Text-based PDF documents.
EPUB to Markdown
.epub
Open standard e-book publications.
FictionBook to Markdown
.fb2
FictionBook XML e-books.
Jupyter to Markdown
.ipynb
Jupyter computational notebooks.