NerdTools - TOOLS FOR NERDS

Text Encoders & Formatters

Base64, JSON, URL, HTML encoding and formatting tools

Encode to Base64

Enter your data:

Character set URL-safe encoding

Encoded result:

Decode from Base64

Enter Base64 string:

Decoded result:

JSON Formatter

Enter JSON:

Format Minify

Result:

URL Encode/Decode

Enter text or URL:

Encode Decode

Result:

HTML Entity Encode/Decode

Enter text:

Encode Decode

Result:

Case Converter

Enter text:

camelCase PascalCase snake_case kebab-case CONSTANT_CASE

Result:

Number Base Converter

Enter number:

From

All conversions:

URL Parser

Enter URL:

Components:

Query parameters (key=value per line, edit & rebuild):

Rebuilt URL:

JavaScript Minify/Obfuscate

Compress and obfuscate JavaScript code

JavaScript Code

Enter JavaScript code:

Minify (remove whitespace) Obfuscate (basic)

Processed result:

Deobfuscate/Beautify

Enter minified/obfuscated code:

Beautify (format code) Decode strings

Deobfuscated result:

Color & Image Tools

Color code converter and Base64 image encoder

Color Picker

Hue:

HEX:

RGB:

HSL:

Color Code Converter

Enter color code (HEX, RGB, or HSL):

To HEX To RGB To HSL

Result:

Base64 Image Encoder

Select image file:

Encode Decode

Result:

Text & Date Tools

Regex tester, text statistics, and Unix timestamp converter

Regex Tester

Enter regex pattern: Enter text to test:

Matches:

Text Statistics

Enter text:

Statistics:

Unix Timestamp Converter

Enter Unix timestamp or date:

To Date To Timestamp Format

Result:

Unit Converter

Enter value:

Type From

All conversions:

Markdown Preview

Markdown:

Preview:

HTML:

Data & SQL Tools

CSV, JSON, YAML, XML conversion and SQL formatting

CSV / JSON Converter

Enter CSV or JSON:

CSV → JSON JSON → CSV

Result:

SQL Formatter

Enter SQL query:

Format Minify

Result:

YAML / JSON Converter

Enter YAML or JSON:

YAML → JSON JSON → YAML

Result:

XML / JSON Converter

Enter XML or JSON:

XML → JSON JSON → XML

Result:

Lorem Ipsum Generator

Dummy text generator

Generate Lorem Ipsum

Type Count Start with "Lorem ipsum..."

Generated text:

Diff Comparison

Compare differences between two texts

Text Diff

Original text:

Modified text:

Difference:

Security & Generators

JWT decoding, hash, UUID and password generation tools

JWT Decoder

Enter JWT:

Header:

Payload:

Hash Generator

Enter text: Or select a file (takes precedence):

Algorithm

Hex digest:

UUID Generator

Version Count Uppercase No hyphens

UUIDs:

Password Generator

Length A-Z a-z 0-9 !@#$

Password:

Utilities

Exchange rates, Cron expression generator, QR code generator, CIDR calculator

Exchange Rate

USD/KRW

-

US Dollar

JPY(100)/KRW

-

Japanese Yen

Reference date: -

3-Month Rate Trend

Currency Calculator

=

Cron Expression Generator

Minute (0-59)

Hour (0-23)

Day (1-31)

Month (1-12)

Weekday (0-6)

Cron Expression:

QR Code Generator

Enter text or URL:

Size

QR Code:

QR Code will appear here

CIDR Calculator

Enter CIDR (IPv4):

Result:

SooTool

https://github.com/JinHo-von-Choi/SooTool

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nerdvana-cli

https://github.com/JinHo-von-Choi/nerdvana-cli

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parism

https://github.com/JinHo-von-Choi/parism

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colosseum

https://github.com/JinHo-von-Choi/colosseum

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MockPack

https://github.com/JinHo-von-Choi/MockPack

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nuvatis

https://github.com/JinHo-von-Choi/nuvatis

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skill-evolver

https://github.com/JinHo-von-Choi/skill-evolver

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panopticon

https://github.com/JinHo-von-Choi/panopticon

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kas-free

https://github.com/JinHo-von-Choi/kas-free

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nuvatis-sample

https://github.com/JinHo-von-Choi/nuvatis-sample

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NerdScribe

https://github.com/JinHo-von-Choi/NerdScribe

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Physiom

https://github.com/JinHo-von-Choi/Physiom

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pgkit

https://github.com/JinHo-von-Choi/pgkit

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WeaselEasel

https://github.com/JinHo-von-Choi/WeaselEasel

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Tersorium

https://github.com/JinHo-von-Choi/Tersorium

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anchormind

https://github.com/JinHo-von-Choi/anchormind

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spring-boot-template

https://github.com/JinHo-von-Choi/spring-boot-template

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