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URL: https://dev.to/allomni_tools_45fb0a7e9ef/170-free-browser-based-developer-tools-no-login-no-upload-100-private-1adk

⇱ 170+ Free Browser-Based Developer Tools — No Login, No Upload, 100% Private - DEV Community


Hey DEV community! 👋

We built AllOmnitools because we hated the friction of online tools: signing up, uploading files, dealing with ads, or worrying about privacy.

So we created 170+ free online tools that run 100% in your browser — no login, no uploads, no tracking.

What We Offer for Developers

Code & Text Tools

  • Diff Checker — Side-by-side comparison highlighting additions, deletions, and line differences [源]
  • JSON Formatter — Validate and pretty-print JSON
  • Markdown Preview — Live Markdown renderer showing HTML output in real-time
  • Regex Tester — Test regular expressions instantly
  • Base64 Encoder/Decoder — Encode/decode text and files
  • JWT Decoder — Decode JSON Web Tokens without a server

Calculators

  • Scientific Calculator — Trigonometry, logarithms, constants, complex expressions [源]
  • GST/VAT Calculator — Compute business tax for India, Nepal, Europe [源]
  • BMI, EMI, Age, Date/Time calculators

Converters

  • Unit converters (length, weight, temperature, etc.)
  • Text encoders (URL, HTML, Unicode)
  • Format converters (XML, CSV, YAML)

Utility Tools

  • QR Code Generator
  • Password Generator
  • Certificate and hash tools