Byte Utility

Quick utility tools for developers and everyday use. No sign-up. Everything runs locally.

ByteTech Labs

bytetechlabs.com

General

Open a WhatsApp chat with any number without saving it to your contacts

General

Start a Telegram conversation with any number or username without adding them

General

Payment QR

Generate dynamic EMV payment QR codes by injecting an amount into your bank's static QR

General

QR Scanner

Scan QR codes using your camera or upload an image — no libraries, fully private

General

QR Generator

Generate QR codes for text, URLs, or Wi-Fi with custom colors and error correction

General

GST Calculator

Add GST to a base price or extract GST from an inclusive amount at any tax rate

General

Developer

JSON Formatter

Format, minify, and validate JSON with syntax highlighting and error detection

Developer

JSON Diff

Visually compare two JSON objects and highlight added, removed, or changed keys

Developer

JSON → TypeScript

Instantly generate TypeScript interfaces and types from any JSON structure

Developer

JSON ↔ CSV

Convert JSON arrays to CSV spreadsheets and back, with header detection

Developer

SQL Formatter

Beautify and format SQL queries for MySQL, PostgreSQL, and SQLite dialects

Developer

HTML ↔ JSX

Convert HTML snippets to JSX syntax and back — handles class, style, and events

Developer

HTML Entities

Escape special characters to HTML entities and unescape them back to plain text

Developer

Markdown Preview

Live-render Markdown to styled HTML with support for tables, code blocks, and GFM

Developer

Regex Tester

Test regular expressions against input with live match highlighting and flag support

Developer

Regex Cheat Sheet

Quick reference for regex syntax — anchors, groups, quantifiers, lookaheads

Developer

Base Converter

Convert numbers between binary, octal, decimal, hex, and any custom base

Developer

Case Converter

Transform text between camelCase, snake_case, PascalCase, kebab-case and 9 more

Developer

UUID Generator

Generate cryptographically random UUID v4 identifiers, one or in bulk

Developer

Color Converter

Convert colors between HEX, RGB, HSL, and HSV with a live visual preview

Developer

CSS Gradient

Visually build linear and radial CSS gradients and copy the ready-to-use CSS

Developer

CSS Units

Convert between px, em, rem, vw, vh, and pt at any base font size or viewport

Developer

SVG Placeholder

Generate custom SVG placeholder images with any size, color, and label for mockups

Developer

Chmod Calculator

Calculate Unix file permissions in octal and symbolic notation (rwxr-xr-x)

Developer

Semver Calculator

Check whether a version satisfies a semver range — useful for dependency debugging

Developer

Docker → Compose

Paste a docker run command and get the equivalent docker-compose.yml YAML output

Developer

.env Parser

Paste a .env file to parse, visualize, and inspect key-value pairs and comments

Developer

Device Info

View your browser, OS, screen resolution, timezone, and hardware concurrency

Developer

Code Obfuscator

Obfuscate JS/TS code by encoding strings, renaming variables, and minifying — or decode obfuscated code

Developer

Security

Token Generator

Generate random tokens with a custom character set and length for API keys or secrets

Security

Password Generator

Generate cryptographically secure passwords with custom length, symbols, and rules

Security

Password Strength

Analyze password strength, entropy, and estimated crack time with detailed feedback

Security

Hash Generator

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of any text string instantly

Security

HMAC Generator

Generate HMAC-SHA256 or HMAC-SHA512 message authentication codes with a secret key

Security

Encrypt / Decrypt

Encrypt and decrypt text using AES-GCM with a passphrase — all processing in-browser

Security

Bcrypt

Hash passwords with bcrypt and verify a plaintext password against an existing hash

Security

OTP Generator

Generate time-based one-time passwords (TOTP) from a Base32 secret per RFC 6238

Security

ROT13 / Caesar

Apply ROT13 or a custom Caesar cipher shift to encode and decode text

Security

JWT Decoder

Decode and inspect JWT header, payload, and expiry without a secret key

Security

JWT Generator

Sign and create JWT tokens with a custom payload and HS256 secret key

Security

Base64

Encode plain text or binary data to Base64 and decode Base64 strings back to text

Security

Card Validator

Validate credit card numbers using the Luhn algorithm and identify the card network

Security

IBAN Validator

Validate international bank account numbers and extract country, bank, and account info

Security

Converters

YAML ↔ JSON

Convert between YAML and JSON formats with syntax validation and pretty printing

Converters

URL Encoder

Percent-encode and decode URL components — handles spaces, special chars, and Unicode

Converters

Roman Numerals

Convert between decimal integers and Roman numeral notation in both directions

Converters

Temperature

Convert temperatures between Celsius, Fahrenheit, and Kelvin simultaneously

Converters

Morse Code

Translate text to Morse code dots and dashes and decode Morse back to text

Converters

List Converter

Convert lists between CSV, JSON array, newline-separated, and tab-separated formats

Converters

Number to Words

Spell out numbers in English words — supports negatives, decimals, and up to trillions

Converters

Base64 Image

Convert images to Base64 data URIs and back — useful for embedding images in CSS or HTML

Converters

Image Compressor

Compress and convert JPEG, PNG, and WebP images locally without uploading to a server

Converters

PDF Compressor

Reduce PDF file size by re-rendering pages as compressed images — up to 80% smaller

Converters

PDF Merge

Combine multiple PDF files into a single document, reorder pages, all in-browser

Converters

ASCII Art

Convert text into large ASCII block art using various fonts and character styles

Converters

Network

URL Parser

Break any URL into protocol, host, path, query params, and fragment components

Network

HTTP Status

Look up HTTP status codes with descriptions, use cases, and MDN reference links

Network

DNS Lookup

Query A, AAAA, MX, TXT, CNAME, NS, and more DNS records via Cloudflare DNS over HTTPS

Network

IPv4 Converter

Convert IPv4 addresses between dotted decimal, binary, hexadecimal, and integer formats

Network

IP Calculator

Calculate subnet mask, network address, broadcast address, and usable host range

Network

MAC Generator

Generate random or vendor-prefixed MAC addresses for testing and network simulation

Network

Basic Auth

Encode credentials into a Base64 Basic Authorization header for HTTP requests

Network

Crontab

Parse and explain cron expressions in plain English, or build cron schedules visually

Network

MIME Types

Look up MIME types by file extension or find extensions for a given MIME type

Network

User Agent

Parse and decode your browser's user agent string into OS, browser, and version details

Network

Meta Tag Generator

Generate SEO meta tags, Open Graph, and Twitter Card markup ready to paste into HTML

Network

Calculators

Unix Timestamp

Convert Unix timestamps to human-readable dates and convert dates back to timestamps

Calculators

Random Number

Generate single or bulk random integers or decimals within a custom min–max range

Calculators

Age Calculator

Calculate exact age in years, months, and days from a birthdate to today or any date

Calculators

Days Between

Count the exact number of days, weeks, or months between any two calendar dates

Calculators

Aspect Ratio

Calculate, simplify, and lock aspect ratios — find missing dimensions for any ratio

Calculators

Percentage

Calculate percentages, percentage change, and what percentage one number is of another

Calculators

Pomodoro Timer

Focus timer with 25-minute work sessions and customizable short and long break cycles

Calculators

Text

Text Tools

Count words, characters, sentences, and estimate reading time for any block of text

Text

Text Diff

Compare two text blocks side-by-side and highlight every addition and deletion

Text

Lorem Generator

Generate Lorem Ipsum placeholder text by words, sentences, or paragraphs

Text

Fake Data

Generate realistic fake names, emails, addresses, and other data for testing

Text

Notes

Quick local notepad that auto-saves in your browser — no account needed

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Slugify

Convert any text into a clean URL-safe slug with custom separators and case options

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NATO Alphabet

Convert any text to NATO phonetic alphabet spelling (Alpha, Bravo, Charlie…)

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Text to Binary

Convert plain text to binary (0s and 1s) and decode binary back to readable text

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Text to Hex

Encode text as hexadecimal byte values and decode hex strings back to plain text

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Numeronym

Generate numeronyms like i18n or k8s by abbreviating long words with their letter count

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Word Frequency

Analyze text and rank words by how often they appear — useful for content analysis

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Keycode Info

Press any key to inspect its event.key, keyCode, and code values in real time

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String Obfuscator

Obfuscate sensitive strings using Unicode lookalikes, zero-width chars, or encoding

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Markdown Table

Build Markdown tables visually in a spreadsheet-like editor, import from CSV, and copy the raw syntax

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.gitignore

Generate .gitignore files for any language, framework, or tool from curated templates

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