Dashboard
Dashboard
100% client-side — no upload, no servers
Your files, refined.
A zero-upload toolkit for JSON, CSV, HTML, Markdown and more. Everything runs in your browser — nothing ever hits a server.
or pick a tool below
Pick a workspace
7 tools availableFormat · Validate
OpenJSON Inspector
Format, validate, tree-view and diff JSON documents.
Tabular
OpenCSV Workstation
Preview tables, detect delimiters and sort columns.
Live preview
OpenHTML Previewer
Beautify, preview and export HTML snippets.
GFM
OpenMarkdown Studio
Write, preview GFM and export to HTML or .md.
Compare
OpenUniversal Diff
Compare text side-by-side with change highlighting.
Beta
OpenPDF Modifiers
Inspect and manipulate PDF pages client-side.
Converter
OpenJSON ↔ CSV
Convert JSON to CSV and CSV to JSON — instant download.
Privacy-first. All processing happens locally in your browser. No data leaves your machine.