utilnaut

Online Utilities

by utilnaut — free, private, no sign-up required

/

Text & String

8

Case Converter

Convert text between camelCase, snake_case, PascalCase, kebab-case

Lorem Ipsum Generator

Generate placeholder text by paragraphs, words, or sentences

Word Counter

Count words, characters, sentences, paragraphs and reading time

Text Diff

Compare two texts and highlight differences

Slug Generator

Convert text to URL-friendly slugs

Remove Duplicate Lines

Remove or highlight duplicate lines from text

Sort Lines

Sort lines alphabetically, reverse, or randomly

String Escape / Unescape

Escape and unescape JS, JSON, HTML, and SQL strings

Encoding & Decoding

8

Base64 Encode / Decode

Encode or decode text and files using Base64

URL Encode / Decode

Encode or decode URLs using encodeURIComponent

HTML Entity Encode / Decode

Encode and decode HTML entities like & < '

JWT Decoder

Decode JWT header and payload, check expiration

Hex Encode / Decode

Convert text to hexadecimal and back

Unicode Converter

Convert characters to Unicode code points and escape sequences

Morse Code

Convert text to Morse code and back

Backslash Escape

Escape and unescape backslash sequences in strings

Data & Format

7

JSON Formatter

Format, minify, and validate JSON data

JSON ↔ CSV

Convert between JSON and CSV formats

JSON ↔ YAML

Convert between JSON and YAML formats

XML Formatter

Format, minify, and validate XML data

CSV Viewer

View and parse CSV data as a table

Markdown Preview

Write Markdown and see a live rendered preview

SQL Formatter

Format and beautify SQL queries

Crypto & Security

7

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

HMAC Generator

Generate HMAC with a custom secret key

Password Generator

Generate secure passwords with custom options

UUID Generator

Generate UUID v1, v4, v5 or bulk generate

ULID Generator

Generate sortable unique identifiers (ULID)

Bcrypt Hash

Hash and verify strings using Bcrypt

Random String Generator

Generate random strings with custom charset

Numbers & Math

4

Number Base Converter

Convert numbers between binary, octal, decimal, and hex

Roman Numeral Converter

Convert between Arabic numbers and Roman numerals

Bitwise Calculator

Perform AND, OR, XOR, NOT, and shift operations

Math Expression Evaluator

Safely evaluate math expressions

Date & Time

4

Unix Timestamp Converter

Convert Unix epoch timestamps to readable dates

Date Calculator

Calculate the difference between dates or add/subtract days

Cron Expression Parser

Parse and explain cron expressions

Timezone Converter

Convert times between different timezones

Color & Design

5

Color Converter

Convert colors between HEX, RGB, HSL, HSV, and OKLCH

CSS Gradient Generator

Create linear and radial CSS gradients visually

Color Palette Generator

Generate color palettes from a base color

Contrast Checker

Check WCAG AA/AAA color contrast ratios

Tailwind Color Reference

Browse and copy Tailwind CSS color palette

CSS & HTML

6

CSS Flexbox Generator

Generate flexbox layouts visually

CSS Grid Generator

Generate CSS grid layouts visually

CSS Box Shadow Generator

Create CSS box shadows with live preview

CSS Border Radius Generator

Generate CSS border-radius visually

CSS Minifier

Minify and compress CSS code

px ↔ rem Converter

Convert between px and rem units with custom base font size

JavaScript & Code

3

Regex Tester

Test regular expressions with live highlighting

JS Minifier

Minify and compress JavaScript code

JSONPath Tester

Query JSON data using JSONPath expressions

Network & Web

5

HTTP Status Codes

Complete reference for all HTTP status codes

MIME Types Reference

Look up MIME types by file extension

IP & Browser Info

View your IP address, User Agent, and browser details

URL Parser

Parse URLs into their component parts

DNS Lookup

Query DNS records via DNS over HTTPS

Image & File

3

Image to Base64

Convert images to Base64 data URIs

SVG Optimizer

Optimize and minify SVG files

File Hash Generator

Generate SHA-256 hash of local files

QR & Barcode

9
NEW

QR Code Generator

Generate QR codes for text, URLs, WiFi, vCard, and email

NEW

QR Code Reader

Scan and decode QR codes from images or camera

NEW

Barcode Generator

Generate barcodes: Code128, Code39, EAN-13, EAN-8, UPC-A, ITF-14

NEW

Barcode Reader

Scan and decode barcodes from images

NEW

ISBN Validator

Validate and convert ISBN-10 and ISBN-13 codes

NEW

License Key Generator

Generate license keys in XXXX-XXXX-XXXX-XXXX format

NEW

OTP / TOTP Generator

Generate one-time passwords and TOTP secrets for authenticators

NEW

vCard Generator

Create vCard contact files with QR code for easy sharing

NEW

WiFi QR Generator

Generate QR codes to share WiFi credentials instantly