Your All-in-One
Developer Toolkit

30+ free online tools for developers. Format JSON, encode strings, generate passwords, and more. Fast, private, and free to use.

30+
Free Tools
100%
Free Forever
100%
Client-Side
Fast
Instant Results

All Tools

Browse our collection of free online tools. All tools run entirely in your browser - your data never leaves your device.

JSON Formatter

Format, beautify, and validate JSON data with syntax highlighting

Developer

Base64 Encoder/Decoder

Encode and decode Base64 strings quickly and easily

Developer

URL Encoder/Decoder

Encode and decode URLs for safe transmission

Developer

Hash Generator

Generate MD5, SHA-1, SHA-256 hashes from text

Developer

UUID Generator

Generate random UUIDs/GUIDs instantly

Developer

JWT Decoder

Decode and inspect JWT tokens

Developer

Regex Tester

Test and debug regular expressions in real-time

Developer

HTML Entity Encoder

Encode and decode HTML entities

Developer

YAML to JSON Converter

Convert YAML to JSON and vice versa

Developer

Diff Checker

Compare two texts and highlight differences

Developer

Cron Job Generator

Generate cron expressions easily

Developer

Code Beautifier

Beautify and format code in multiple languages

Developer

Word Counter

Count words, characters, sentences, and paragraphs

Text

Case Converter

Convert text between different cases

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Lorem Ipsum Generator

Generate placeholder text for designs

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Remove Duplicates

Remove duplicate lines from text

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Text Reverser

Reverse text characters or words

Text

Character Counter

Count characters with and without spaces

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Text Sorter

Sort lines of text alphabetically

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Morse Code Translator

Translate text to and from Morse code

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Password Generator

Generate secure random passwords

Security

QR Code Generator

Generate QR codes from text or URLs

Security

Color Picker

Pick colors and get HEX, RGB, HSL values

Security

IP Address Lookup

Look up information about IP addresses

Security

AES Encryption

Encrypt and decrypt text with AES

Security

Image Resizer

Resize images to custom dimensions

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Image Compressor

Compress images without losing quality

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Image to Base64

Convert images to Base64 strings

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Favicon Generator

Generate favicons from images

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Placeholder Image

Generate placeholder images

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Why NexusTools?

Privacy First

All tools run client-side. Your data never leaves your browser.

Lightning Fast

No server roundtrips. Instant results right in your browser.

100% Free

No subscriptions, no hidden fees. Free forever.