Open Source Credits

ConvertCrunch is built on the shoulders of incredible open-source projects. We're grateful for these libraries that make our tools possible.

Diagramming

Mermaid

mermaid

JavaScript-based diagramming and charting tool that renders Markdown-inspired text definitions to create diagrams dynamically.

Artificial Intelligence

Transformers.js

@huggingface/transformers

Run Hugging Face transformer models directly in the browser with WebAssembly and WebGPU acceleration.

Database

sql.js

sql.js

SQLite compiled to WebAssembly, enabling full SQL database functionality entirely in the browser.

PDF Processing

pdf-lib

pdf-lib

Create and modify PDF documents in any JavaScript environment.

PDF.js

pdfjs-dist

Mozilla's PDF viewer built with HTML5, powering Firefox's built-in PDF reader.

Image Processing

Tesseract.js

tesseract.js

Pure JavaScript OCR engine supporting 100+ languages, powered by the Tesseract OCR engine compiled to WebAssembly.

Data & Spreadsheets

SheetJS

xlsx

Parse and write spreadsheet files in the browser — supports XLSX, CSV, and dozens of other formats.

Compression

JSZip

jszip

(MIT OR GPL-3.0-or-later)

Create, read, and edit .zip files with JavaScript, with a friendly API.

Document Processing

Mammoth

mammoth

Convert .docx documents to HTML and Markdown, focusing on semantic content.

Charts & Visualization

Recharts

recharts

Composable charting library built on React components and D3.

Audio & Video

FFmpeg.wasm

@ffmpeg/ffmpeg

FFmpeg compiled to WebAssembly for client-side audio and video processing.

ConvertCrunch is browser-first and uses open-source libraries with permissive licenses (MIT, Apache 2.0, BSD). Most processing is local; network-dependent features are identified in the relevant tool and privacy policy.