Developer Tools
Small tools for everyday development work. All of them run entirely in your browser.
Nothing you enter is sent to a server
JSON Formatter
Formatting
Format, minify and validate; pinpoint the broken line.
JSON Tree Viewer
Formatting
Collapsible, colour-coded tree; copy any path in one click.
Markdown Preview
Formatting
Live preview as you type, with HTML output.
JSON to C# Class
.NET
Generate classes or records from JSON, System.Text.Json ready.
GUID Generator
.NET
Single or bulk GUIDs; uppercase and braces options.
JWT Decoder
Encoding
Read the header and payload, see when it expires.
Base64 / URL Encode
Encoding
Base64, URL and HTML entity encode / decode.
Regex Tester
Text & Time
Highlight matches and groups live.
Unix Timestamp
Text & Time
Timestamp ↔ date, local time and UTC.
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