A set of efficient utilities that extend the use of JSON (streaming, estimate size, NDJSON/JSONL, etc.)

Build and manage the fast-json-stringify instances for the fastify framework

A universal Node.js & Browser library to parse any office document — legacy or modern — into plain text, structured AST or Markdown. Supports DOCX, XLSX, PPTX, ODT, ODS, ODP, PDF, RTF and legacy formats DOC, XLS, PPT. Built for AI pipelines, RAG systems a

Support for proto3 JSON serialiazation/deserialization for protobuf.js

Download your JSON as an excel or CSV file directly from the browser

Feature-rich JavaScript Spreadsheet (Excel) control with built-in support for selection, editing, formatting, importing and exporting to Excel

JSON Schema TypeScript definitions with complete inline documentation.

Converting xls file to json files using nodejs

Read and parse a JSON file

JSON.parse with bigints support

Scanner and parser for JSON with comments.

react-xls is the fastest in-browser excel ( .xls & .xlsx ) parser for React. It is full of useful features such as useExcelDownloader, ... etc.

JS library that allows you to easily serialize and deserialize data with BigInt values

Parse and stringify JSON with comments. It will retain comments even after saved!

parse excel to json object

JSON.parse with context information on error

JSON Schema validation and specifications

Utilities for visualizing Salesforce schema

Download your JSON as an excel or CSV file directly from the browser

JSON parse & stringify that supports binary via bops & base64