Free Online Tools For .NET / C# Developers
HTML Formatter
Beautifies HTML code for improved readability and easier debugging in web projects.
Stack Trace Formatter
Formats .NET stack traces to enhance readability and simplify debugging processes.
URL Encoder / Decoder
Encodes or decodes URLs to ensure compliance with the URL specification.
HMAC encoder
Generates HMAC hashes for strings, verifying the authenticity and integrity of data.
Multiline String Converter
Converts multiline text into verbatim C# strings for seamless code integration.
JSON Formatter
Formats and validates JSON files, ensuring proper structure and readability in projects.
Appsettings.json Transform Tester
Tests transformations of appsettings.json files to validate configurations.
Base64 Image Encoder
Converts images into Base64 strings for embedding directly into HTML or CSS files.
Md5 Encoder
Creates MD5 hashes for strings, ensuring data integrity and supporting checksum verification.
GUID Generator
Generates unique GUIDs, useful for database keys and other unique identifiers.
XML Formatter
Formats and validates XML data to ensure readability and compliance with XML standards.
C# Formatter
Formats C# code to improve readability and adhere to coding style conventions.
W3C Extended Log File Format Viewer
Displays and analyzes web server log files for actionable insights.
Cron Parser
Parses and interprets cron expressions for accurate scheduling of recurring tasks.
YAML Formatter
Formats and validates YAML files, ensuring consistent structure for configuration management.
Free Online Tools for Developers
Sometimes, recurring development tasks can slow you down, no matter how advanced your tools are. Whether you’re searching for ways to "format JSON," "validate web.config," or "generate GUIDs," quick and reliable solutions are invaluable. While many of these features are available in modern IDEs like Visual Studio, having dedicated online tools can save time and reduce distractions.
FreeOpenTools offers a growing collection of free online tools designed specifically for .NET and C# developers. From formatting and validating JSON, XML, and YAML files to testing appsettings.json transformations and generating Base64 encoded strings, these tools simplify everyday challenges. Developers can also use features like the Stack Trace Formatter for debugging, the HMAC Encoder for ensuring data integrity, and the Cron Parser for scheduling tasks. Each tool is lightweight, browser-based, and crafted to address common development needs effectively.
These tools are more than just utilities—they’re part of FreeOpenTools's commitment to helping developers streamline their workflows. If there’s a tool you need but can’t find, let us know. We’re constantly looking for new ideas to expand our collection and make your development journey smoother.
Explore our tools and see how FreeOpenTools can make your day-to-day development faster and more efficient.