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SpeedyToolsHub Explore tools
Browser developer workspace

Developer tools that stay private.

Fast, private utilities for JSON, Base64, URLs, regex, JWTs, UUIDs, CSV, and QR codes.

✓ No API✓ No account✓ No server upload
{} Private

JSON formatter ↗

Format minified JSON with readable indentation.
✓ Private

JSON validator ↗

Check whether JSON is valid.
⇩ Private

JSON to CSV ↗

Convert an array of JSON objects into CSV.
⇧ Private

CSV to JSON ↗

Convert CSV rows into JSON objects.
B+ Private

Base64 encoder ↗

Encode text as Base64.
B− Private

Base64 decoder ↗

Decode Base64 back into readable text.
%+ Private

URL encoder ↗

Encode text for safe use in URLs.
%− Private

URL decoder ↗

Decode percent-encoded URLs and query values.
ID Private

UUID generator ↗

Generate secure random UUID v4 values.
.* Private

Regex tester ↗

Test regular expressions against sample text.
JWT Private

JWT decoder ↗

Decode JWT header and payload claims.
▦ Private

QR code generator ↗

Create a QR code from text or a URL.

A focused developer tools collection

Small developer tasks can interrupt a larger build. This hub keeps practical formatting, encoding, validation, testing, and generation utilities in one fast browser workspace.

These tools are useful for developers, QA engineers, analysts, technical writers, and students working with structured data or web protocols. Every tool is designed around one clear action, one clean URL, and a short path from input to download or copy.

Common workflows

  • Format a JSON response before debugging it.
  • Convert a CSV export into JSON objects.
  • Decode a JWT payload without sending the token to a server.

Why browser-based tools?

For everyday files and snippets, local browser processing can be faster and more private than uploading content to a third-party service. It also means the project can run on ordinary shared hosting without Python workers, system binaries, or per-use API fees.