Free Tools

Free Developer & Business Tools

Fast, private and free. Every tool runs entirely in your browser — no sign-up, no uploads, no limits.

100% private No backend Always free
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JSON → CSV / Excel Converter

Turn JSON into clean CSV or Excel in one drop.

  • CSV & Excel export
  • Flatten nested objects
  • Drag & drop
  • No upload — 100% local
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CSV → JSON Converter

Turn CSV or Excel data into clean JSON, instantly.

  • Header row → keys
  • Auto-detect numbers & booleans
  • Pretty or minified
  • No upload — 100% local
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Bulk CSV Cleaner

Fix messy CSV files in seconds.

  • Remove duplicates
  • Trim spaces
  • Normalize emails
  • Drop empty rows
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WooCommerce Product CSV Template & Validator

Build a correct WooCommerce import CSV — or validate your own.

  • Exact WooCommerce headers
  • Example product rows
  • Validate before import
  • No upload — 100% local
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Invoice Generator

Create professional invoices, instantly.

  • Client & line items
  • Instant PDF export
  • No sign-up needed
  • Works offline
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On the roadmap: JSON Formatter · Markdown Table Generator