// Privacy-First Developer Utilities
Professional Data Tools. Zero Privacy Risk.
CleanVault is a suite of browser-based utilities for developers, marketers, and researchers. Every operation runs 100% locally. Your data never leaves your device — guaranteed by architecture, not just policy.
✓ No Server Uploads
✓ No Logs
✓ Works Offline
✓ Open Source
✓ GDPR Friendly
✓ Free Forever
// Data & Text
Data
Data Reformatter
Trim, deduplicate, sort lines. Drag & drop CSV or TXT files.
Convert
CSV → JSON
Transform comma-separated data into structured JSON instantly.
Analyze
Word Counter
Chars, words, sentences, reading time, top keywords & density.
Encode
Base64
Encode and decode Base64 strings with smart error handling.
Encode
URL Encoder
Encode/decode URLs. Safe characters, query strings, percent-encode.
Debug
JWT Debugger
Decode & inspect JSON Web Token header, payload, and signature.
Convert
Markdown → HTML
Live markdown preview with clean HTML output & raw source view.
Transform
Text Transformer
Uppercase, Lowercase, Title Case, Sentence Case, Reverse, and more.
Generate
Slug Generator
Convert titles to SEO-friendly URL slugs with custom separators.
Generate
QR Code
Generate downloadable QR codes for URLs, text, emails, or WiFi.
Generate
UUID / GUID
Generate v4 UUIDs in bulk. Nil UUID and formatted variants.
Generate
Hash Generator
MD5 (simulated), SHA-1, SHA-256, SHA-512 — all computed locally.
Convert
Color Converter
HEX ↔ RGB ↔ HSL ↔ CMYK with live swatch and palette presets.
Format
JSON Formatter
Validate, prettify, and minify JSON. Syntax highlighting & error hints.
Compare
Text Diff Checker
Compare two blocks of text and highlight added, removed, and changed lines.
Convert
Number Base Conv.
Convert numbers between Binary, Octal, Decimal, and Hexadecimal.
Generate
Lorem Ipsum Gen.
Generate paragraphs, sentences, or words of placeholder text instantly.
Test
Regex Tester
Test regular expressions live with match highlighting and group capture.
Generate & test
Password Strength
Measure a password's real entropy and time-to-crack against four realistic attackers. The password never leaves the page.
// From the blog
// Privacy
What actually happens when you paste data into an online tool
Most “online” tools process your input on a server. That single design choice turns a formatting task into a data transfer, with all the logging, retention and jurisdiction questions that follow.
// How-to
How to tell whether a web tool really runs in your browser
Marketing copy cannot be verified. The Network tab can. This is the check, what a clean result looks like, and the three ambiguous cases worth understanding.
// Fundamentals
Base64 is not encryption, and the confusion is expensive
Base64 hides nothing. It exists to move binary data through text-only channels. Treating it as protection is a recurring cause of credential leaks.
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