BuildQuill
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C#
C# compiler
Run Program.cs online
Py
Python compiler
Run main.py online
C
C compiler
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C++
C++ compiler
Run main.cpp online
JS
JavaScript compiler
Run index.js online
SQL
SQL compiler
Run query.sql online
Learn
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C#
C# course
Learn C# from first programs through modern runtime features, concurrency, architecture, EF Core, secure ASP.NET Core APIs, testing, and deployment.
C++
C++ course
Learn modern C++ through containers, ownership, classes, algorithms, testing, and a practical command-line project.
Py
Python course
Learn modern Python through data modeling, collections, files, type hints, testing, environments, and a practical command-line project.
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Release Notes
A timeline of every tool we have shipped - 163 tools and counting.
February 1, 2026
11 tools
Remaining Color & Utility Tools
HSV to RGB
RGB to HSV
HSV to HEX
HEX to HSV
Number to Roman
Roman to Number
Octal to Decimal
Decimal to Octal
Text Truncator
Whitespace Remover
Line Counter
January 10, 2026
11 tools
Escape, Encode & Viewer Tools
CSV Escape/Unescape
XML Escape/Unescape
URL Slug Converter
JSON Viewer
XML Viewer
YAML Viewer
Markdown Preview
Time Zone Converter
Bitwise Calculator
Hex to RGB
RGB to HEX
December 15, 2025
10 tools
YAML, XML & JSON Cross-Converters
YAML to XML
XML to YAML
YAML to CSV
CSV to YAML
YAML to TSV
TSV to YAML
TSV to JSON
JSON to TSV
TSV to XML
XML to TSV
December 1, 2025
10 tools
Advanced Format Converters
BBCode to HTML
HTML to BBCode
HTML to JSON
JSON to HTML
HTML to TSV
TSV to HTML
HTML to XML
XML to HTML
HTML to YAML
YAML to HTML
November 15, 2025
11 tools
Unit & Data Converters
Area Converter
Data Size Converter
Length Converter
Mass Converter
Speed Converter
Temperature Converter
Time Converter
Volume Converter
Pressure Converter
Energy Converter
Age Calculator
November 1, 2025
7 tools
Random Generator Tools
Random Number Generator
Random String Generator
Random Date Generator
Random IP Generator
Random JSON Generator
Random XML Generator
Random UUID Generator
October 15, 2025
7 tools
Validator & Checker Tools
Email Validator
Credit Card Validator
JSON Path Tester
Cron Parser
QR Code Generator
HTML Stripper
HTML Table Generator
October 1, 2025
10 tools
Text Utility Tools
Find and Replace
Empty Line Remover
Extract Column
ASCII Converter
ASCII Table Reference
Character Frequency Counter
Diff Checker
JSON Diff
Text to Speech
Emoji Picker
September 15, 2025
10 tools
Base64 Conversion Pack
Base64 to JSON
JSON to Base64
Base64 to CSV
CSV to Base64
Base64 to XML
XML to Base64
Base64 to YAML
YAML to Base64
Base64 Binary Hex
Image to Base64
September 1, 2025
11 tools
Data Converter Suite
JSON to XML
XML to JSON
JSON to YAML
YAML to JSON
CSV to XML
XML to CSV
CSV to HTML
HTML to CSV
CSV to TSV
TSV to CSV
JSON to HTML Table
August 15, 2025
11 tools
Code Formatters & Minifiers
CSS Beautifier
CSS Minifier
CSS Validator
HTML Minifier
JS Beautifier
JS Minifier
JSON Escape/Unescape
JS Escape/Unescape
SQL Formatter
XML Formatter
YAML Formatter
August 1, 2025
10 tools
Encoding & Hashing Tools
Base32 Encoder/Decoder
Base58 Encoder/Decoder
HTML Entity Encoder
HTML Entities to Text
JWT Decoder
MD5 Hash Generator
SHA1 Hash Generator
SHA256 Hash Generator
SHA512 Hash Generator
Hash Comparison
July 15, 2025
10 tools
Color & Design Tools
Color Palette Generator
Color Contrast Checker
CMYK to RGB
RGB to CMYK
CMYK to HEX
HEX to CMYK
HSL to HEX
HEX to HSL
HSL to RGB
RGB to HSL
July 1, 2025
8 tools
SEO & Meta Tools
Meta Tag Generator
SERP Preview
Schema Markup Generator
Open Graph Preview
Readability Score Checker
Slug Generator
UTM Builder
Robots.txt Generator
June 15, 2025
10 tools
Converter Tools Expansion
CSV to JSON
JSON to CSV
Markdown to HTML
HTML to Markdown
Binary to Text
Text to Binary
Hex to Text
Text to Hex
Morse Code Converter
Number Base Converter
June 1, 2025
16 tools
Launch - Core Writing & Developer Tools
Word Counter
Case Converter
Lorem Ipsum Generator
Remove Duplicate Lines
Sort Lines
Reverse Text
Text Repeater
JSON Formatter
Base64 Encoder/Decoder
URL Encoder/Decoder
Regex Tester
Password Generator
Hash Generator
UUID Generator
Color Picker
Color Converter
