Convert Wolfram Mathematica Notebook files (.nb, .cdf) into clean, beautifully structured GitHub Flavored Markdown directly in your browser. Translates code cells, outputs, formulas, and math symbols 100% offline with zero server uploads.
Detailed side-by-side format architecture for NB Document (.nb) and Markdown Document (.md). Every conversion executes strictly within isolated browser memory without network transit.
Drag and drop your .nb file onto the working surface or use the system file dialog. File magic bytes are verified locally on device.
Select a quality preset (Lossless, Visually Lossless, Balanced, Smallest) or adjust advanced encoding switches in the options panel.
Click CONVERT to execute local WebAssembly compilation. Save the finished .md directly to local storage, or stage it for chaining.
Prefer local shell scripting? Run this standard POSIX command on your machine to achieve equivalent transcoding without a web interface:
# Convert NB to MD locally
pandoc input.nb -o output.mdWorking with files across multiple web pages? The official convrtr Chrome Extension adds native Side Panel docking, right-click context menu media extraction, and visible viewport capture. Powered by the same zero-upload client-side WebAssembly engine.
A Mathematica Notebook (.nb) is the native computational notebook format created by Wolfram Research for Mathematica and Wolfram One. It stores interactive computational experiments, symbolic algebra derivations, formatted documentation, and program code in structured hierarchical Cell expression trees.
convrtr analyzes the Wolfram box language (BoxData, RowBox, SuperscriptBox, FractionBox, SqrtBox), converts Wolfram special characters (such as Greek letters and mathematical operators) into clean Unicode symbols, formats sections and headings into Markdown headers, and wraps computations into highlighted code blocks.
Completely private. All parsing, symbol translation, and Markdown rendering take place locally inside your browser sandbox. No notebook data is ever sent to external cloud servers.
NB Document (NB) and Markdown Document (MD) serve distinct roles across the digital workflow. Converting to MD provides optimized compatibility, modern compression efficiency, or standardized playback across web browsers, operating systems, and media production environments.
The output format (MD) is inherently lossless or supports lossless operation. Your original visual or audio fidelity is mathematically preserved without quantization artifacts.
Never. convrtr is architected with a strict zero-upload model. All processing, decoding, decompression, and encoding happen 100% locally on your machine using sandboxed WebAssembly and Web Workers. Your data never touches an external server, database, or analytics collector.
You can execute this conversion locally via command-line utilities such as ffmpeg, cwebp, or ImageMagick. For example: see the developer terminal recipe provided in the technical specifications dossier above. convrtr provides the identical local-first capability directly inside your browser without installing CLI packages.
Yes. You can drop multiple .nb files into the instrument to process them concurrently in browser Web Workers, or click 'Open in Master Studio' to queue mixed formats, configure individual targets, and export as a single ZIP archive.
Learn how Wolfram Mathematica (.nb) computational notebooks store hierarchical expression trees and 2D box formulas, and how convrtr translates them to clean GitHub Flavored Markdown.