Data Formats
Inspect, format, validate and convert structured data formats like JSON, CSV, YAML and XML. Every tool runs entirely in your browser, so files and payloads never leave your machine.
JSON Viewer
Free online JSON viewer, formatter, validator, parser and diff. Pretty-print, minify, sort keys, explore in a collapsible tree, and compare two JSON documents side-by-side — 100% in your browser.
Data FormatsCSV Viewer
Free online CSV viewer, parser and formatter. Auto-detects delimiter, browses rows in a table, validates and reformats — 100% in your browser.
Data FormatsYAML Viewer
Free online YAML viewer, parser and formatter. Validate, pretty-print, sort keys, and explore YAML in a collapsible tree — 100% in your browser.
Data FormatsXML Viewer
Free online XML viewer, parser and formatter. Validate, pretty-print, minify, and explore XML in a collapsible tree — 100% in your browser.
Data FormatsXLSX→CSV
Convert Excel files to CSV. All sheets supported. 100% client-side.
Data FormatsCSV→XLSX
Paste or upload CSV → download as Excel .xlsx. Client-only.
Data FormatsJSON Chart
Paste a JSON array → choose X and Y keys → render line/bar/pie. Download as PNG.