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Advanced Open-Source Base64 Encoding / Decoding Tool

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Features

• ★ Standard Base64 encode & decode
• ★ URL-safe Base64 alphabet (- _ instead of + /)
• ★ File-to-Base64 and Base64-to-file support
• ★ Base64 validation
• ★ Encoding statistics (size, padding, efficiency ratio)
• ★ Multi-encoding support: UTF-8, ASCII, UTF-16, Latin-1
• ★ Output to file via --output
• ★ Interactive REPL mode (no arguments required)
• ★ Animated star loading screen

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Requirements

Requirement	Detail
OS	Windows 7 / 10 / 11
Runtime	.NET Framework 4.8
Build Tools	Visual Studio 2019/2022 or MSBuild

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Usage

Interactive Mode

Run without arguments to enter the interactive REPL:

qbase64

Interactive Commands

Command	Alias	Description
encode <text>	e	Encode text to Base64
decode <b64>	d	Decode Base64 to text
encode-url <text>	eu	Encode to URL-safe Base64
decode-url <b64>	du	Decode from URL-safe Base64
validate <b64>	v	Validate a Base64 string
stats <b64>	s	Show encoding statistics
encoding		List supported encodings
clear	cls	Clear the screen
exit	q	Quit

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CLI Mode

qbase64 <command> <input> [flags]

Commands

Command	Alias	Description
encode	-e	Encode text to Base64
decode	-d	Decode Base64 to text
encode-file	-ef	Encode a file to Base64
decode-file	-df	Decode Base64 string/file to binary file
validate	-v	Validate a Base64 string
help	-h	Show help

Flags

Flag	Description
--url-safe	Use URL-safe Base64 alphabet
--encoding <name>	Character encoding: utf-8 ascii utf-16 latin1
--output <path>	Write result to a file
--stats	Show encoding statistics after operation

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Examples

qbase64 encode "Hello, World!"
qbase64 decode "SGVsbG8sIFdvcmxkIQ=="
qbase64 encode "Hello" --url-safe --stats
qbase64 encode "Hello" --encoding utf-8 --output result.txt
qbase64 encode-file image.png --output image.b64 --stats
qbase64 decode-file encoded.b64 --output restored.png
qbase64 validate "SGVsbG8="

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Supported Encodings

Name	Description
utf-8	Unicode UTF-8 (default)
ascii	ASCII (7-bit)
utf-16	Unicode UTF-16 (Little Endian)
latin1	ISO-8859-1

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Project Structure

qbase64/
├── src/
│   ├── Program.cs          Entry point
│   ├── Application.cs      CLI argument dispatcher
│   ├── InteractiveMode.cs  REPL mode
│   ├── Base64Engine.cs     Encoding / decoding logic
│   ├── LoadingScreen.cs    Animated loading screen
│   └── UI.cs               Console output helpers
├── Properties/
│   └── AssemblyInfo.cs
│── qbase64.csproj

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_{✦   qbase64 v0.0.1   ✦}