JSON Formatter & Minifier
"Zero-latency processing via WebAssembly.
Data never leaves your local environment."
JSON Validator
JSONJSON validator to check syntax errors and format your JSON data. Instant validation with detailed error reporting and automatic formatting.
LeapOCR
Convert Documents to Markdown & Structured Data with AI-powered OCR
Combine world-class OCR with AI instructions for trusted extractions
Online JSON Minifier – Fast, Private, No Uploads
Every kilobyte matters when you ship REST APIs, config bundles, or mobile apps.This free web minifier compresses JSON, JSONC and geoJSON to the smallest allowed ECMA-404 syntax—whitespace, line-breaks and optional quotes stripped—without changing your data. It runs entirely in your browser using a WebAssembly core so nothing ever leaves your machine. Reduce payload sizes, speed up CI pipelines and tighten bandwidth budgets in three clicks.
Json Integrity Checker
Comprehensive validation engine for json data structures with real-time error detection.
- → Parse Error Detection: Pinpoints exact location of syntax violations.
- → Character Encoding Analysis: Validates proper character encoding compliance.
- → Structure Verification: Ensures proper nesting patterns and syntax compliance.
Capabilities
- 01 Drag-and-drop file upload ▸ instant minified preview.
- 02 Pure WebAssembly engine—0 bytes sent to servers.
- 03 Preserves UTF-8, emojis and unicode escape sequences.
- 04 Benefit: Zero server round-trip keeps your private secrets and configs completely in-browser.
- 05 Benefit: WebAssembly minification runs 5–10× faster than JavaScript-only tools—handle 100 MB files without lag.