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UtiliveDeveloper utilities
  • All tools
    • JSON
    • JSON Schema Validator
    • JSONPath Runner
    • JSON <> YAML
    • JSON Escape / Unescape
    • JSON Diff
    • CSV <> JSON
    • CSV Toolkit
    • Text Diff
    • String Tools
    • Text Counter
    • Escape / Unescape
    • Slug Generator
    • Lorem Ipsum
    • List Comparer
    • List Delimiter
    • List → Array
    • List → JSON Array
    • Delimiter & Formatter
    • Code Formatter
    • HTML Formatter / Minifier
    • SQL Formatter
    • Markdown Preview
    • Markdown Exporter
    • UUID
    • UUID Inspector
    • cUID Generator
    • Random String
    • Password Generator
    • Secret Key
    • User-Agent
    • Base64 Text
    • Base64 Image
    • URL Encoder / Decoder
    • Hash (MD5/SHA*)
    • JWT Debugger
    • HMAC & AES
    • Bcrypt
    • Number Base Converter
    • Unit Converter
    • Date/Time Toolkit
    • Timestamp Converter
    • Color Tools
    • QR Code
    • Cron Parser
    • Regex Tester
    • Regex Library
    • WHOIS Lookup
    • DNS Lookup
    • Image Tools
    • Support
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Privacy-first · 100% client-side

A collection of developer utilities.

JSON, regex, encoders, generators, formatters, and more. Each tool runs entirely in your browser, so your data never leaves the page.

Browse tools

  • No data leaves your device

    Every tool runs in your browser. No tracking pixels in tool pages.

  • Built for speed

    Lightweight bundles, instant validation, keyboard-first UI.

  • Find anything fast

    Press Cmd/Ctrl+K to search across every tool from anywhere.

All tools51

JSON

Beautify and minify JSON

JSON Schema Validator

Validate JSON against schema

JSONPath Runner

Query JSON with JSONPath

JSON <> YAML

Convert JSON to YAML and back

JSON Escape / Unescape

Escape or unescape JSON string content

JSON Diff

Structural diff for JSON

CSV <> JSON

Convert CSV to JSON and back

CSV Toolkit

CSV delimiter, header, to/from JSON

Text Diff

Compare two texts and highlight changes

String Tools

Case converter, trimming, spacing

Text Counter

Count words, characters, lines

Escape / Unescape

Escape or unescape special characters

Slug Generator

Generate URL-friendly slugs

Lorem Ipsum

Generate placeholder text

List Comparer

Intersection, differences, and union

List Delimiter

Change list delimiters, unique, sort

List → Array

Convert list into array literals

List → JSON Array

Convert list into JSON array

Delimiter & Formatter

Split/merge text with custom delimiters

Code Formatter

Format JS/TS, HTML, CSS

HTML Formatter / Minifier

Format or minify HTML

SQL Formatter

Beautify SQL queries

Markdown Preview

Preview Markdown with syntax highlight

Markdown Exporter

Render and export Markdown

UUID

Generate one or many UUIDs

UUID Inspector

Generate and inspect UUIDs

cUID Generator

Generate collision-resistant unique IDs

Random String

Create random strings

Password Generator

Generate strong passwords

Secret Key

Generate secrets for .env files

User-Agent

Generate realistic browser User-Agent strings

Base64 Text

Encode and decode Base64 for text

Base64 Image

Encode images as Base64 data URLs

URL Encoder / Decoder

Percent-encode or decode URLs

Hash (MD5/SHA*)

Compute MD5, SHA1, SHA256, SHA512

JWT Debugger

Decode and verify JWTs

HMAC & AES

HMAC-SHA256, AES encrypt/decrypt

Bcrypt

Generate and compare bcrypt hashes

Number Base Converter

Convert between binary, octal, decimal, hex

Unit Converter

Convert length, mass, time, storage, temperature

Date/Time Toolkit

Parse/convert time zones and formats

Timestamp Converter

Convert between time formats

Color Tools

HEX/RGB/HSL converter & preview

QR Code

Create and scan QR codes

Cron Parser

Parse and preview CRON schedules

Regex Tester

Test regular expressions

Regex Library

Common regex patterns

WHOIS Lookup

Get domain registration data (RDAP)

DNS Lookup

Query DNS over HTTPS

Image Tools

Compress, convert, metadata

Support

Support Utilive.dev via crypto donations