JSON to Language Struct / Class Generator
About Properties File Formatter
The Java `.properties` & Spring Boot Application Properties Formatter aligns key-value delimiters (`=`), sorts keys alphabetically by dot hierarchy (`app.datasource.url`), and standardizes comments for clean Java configuration repositories.
How to Use Properties File Formatter
Step 1
Paste your `.properties` content into the input pane.
Step 2
Select alignment and sorting preferences.
Step 3
Review the formatted properties output.
Step 4
Click "Copy Formatted Properties".
Practical Use Cases for Properties File Formatter
Formatting Spring Boot `application.properties`
Format, sort, and organize Spring Boot properties files with hierarchical grouping (`spring.jpa.*`, `server.port`) and aligned equals signs.
Java i18n Localization Resource Bundle Management
Sort and align `messages_en.properties` and `messages_es.properties` translation keys for clean side-by-side comparison.
Input & Output Examples
Formatting Java Properties
`server.port=8080\nspring.datasource.url=jdbc:postgresql://localhost/db\napp.name=RenderXD`
`app.name = RenderXD\nserver.port = 8080\nspring.datasource.url = jdbc:postgresql://localhost/db`
Key Features & Performance
- ✓Alphabetizes property keys hierarchically (A-Z).
- ✓Aligns equals signs (`=`) or colons (`:`) across property entries.
- ✓Preserves `#` and `!` comment headers and Unicode escape sequences (`\uXXXX`).
- ✓100% Client-Side memory execution.
- ✓1-Click Copy formatted properties.
Key Terminology & Definitions
Java Properties Format (ISO-8859-1)
A key-value file format standard in the Java platform where keys and values are separated by `=`, `:`, or whitespace.
Dot Hierarchy
Organizing configuration namespaces using dot-separated keys (e.g. `spring.security.oauth2.client`).