OneDevTools
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JSON formatters, PDF tools, encoders, CSV converters and more. Everything runs locally — your data never leaves the browser.

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30+free tools
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JSONPDFCSVEncodingTextGeneratorsSecurityConverters

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Client-side processing — no network round-trips.

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Nothing is stored. No logs, no tracking, no accounts.

Works offline

Load once, use forever. No internet required.

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JSON

  • Formatter & Validator
  • Minifier

CSV Tools

  • CSV to JSON
  • JSON to CSV
  • CSV to SQL
  • CSV to Markdown
  • Duplicate Remover
  • Column Splitter
  • Email Validator
  • Prompt Runner
  • Translator
  • Bulk Content Generator

Encoding

  • Base64 Encoder / Decoder
  • URL Encoder / Decoder

Text Tools

  • Case Converter
  • Word Counter
  • Lorem Ipsum

Generators

  • UUID Generator
  • Hash Generator
  • Tailwind Theme Generator

Converters

  • Unix Timestamp
  • Number Base

Security

  • Password Generator

Developer

  • CSS Minifier
  • Vim Cheat Sheet
  • Linux Cheat Sheet

PDF Tools

  • Merge PDF
  • Split PDF
  • Images to PDF
  • PDF to Images
  • Rotate PDF
  • PDF Metadata
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