Pillar Category Hub
Developer JSON & Data Serialization Utilities
Fast, 100% private, client-side browser tools for working with JSON, C structs, CSV conversions, jq filters, and data format transformations.
C JSON Generator & Struct Helper
Convert JSON payloads to C struct definitions and cJSON serialization code instantly.
Launch Tool →Save Screenshot as PDF
Convert screenshots into formatted PDF documents in your browser with layout controls.
Launch Tool →jq Pretty Print Online
Format, filter, and pretty-print JSON using jq key extraction syntax online.
Launch Tool →JSON Array of Objects Builder
Build and structure valid JSON arrays of objects with spreadsheet editing.
Launch Tool →Image to JSON Base64
Encode PNG, JPG, WebP image files into JSON payloads with Base64 data URIs.
Launch Tool →