Clean up single-line .env assignments, align equals signs and spot duplicate keys. Preserve quoted values and comments, with optional sorting inside assignment groups. All processing stays in your browser.
| Key | First line | Repeated line |
|---|
Line numbers refer to the input. Values are not included in this report.
Your environment text is never uploaded to any server; formatting is completed locally in your browser. The tool does not execute commands, expand variables or store input history. Quoted contents and escape spelling are kept as text rather than decoded and reconstructed.
This formatter accepts a defined single-line subset: KEY=value, an optional lowercase export prefix, single- or double-quoted values, # comments and blank lines. Keys must start with an ASCII letter or underscore, followed by letters, digits or underscores, up to 128 characters. Multiline values, backtick quoting, mixed quoted/unquoted values and shell command lines are rejected. Environment loaders differ; this is not a validator for every .env dialect.
Leading assignment indentation and spaces around keys and equals signs are normalized. Whitespace outside unquoted values is trimmed, while inline comment spacing is retained. Quoted values, their escape spelling, export prefixes, comment lines and blank lines are retained. A leading UTF-8 BOM character is removed. Line endings and the final line terminator follow your options. Values are not evaluated or substituted.
Duplicate matching is case-sensitive. Every assignment is retained in original order, with the repeated key and its original line numbers listed separately. No first or last winner is chosen. Sorting is blocked until you resolve duplicates yourself, because loader precedence differs. The report previews the first 100 repeated assignments; output retains all entries.
Sorting uses case-sensitive ASCII key order inside consecutive runs of assignments. Standalone comments and blank lines stay fixed as boundaries; inline comments move with their assignment. Sorting is blocked for duplicate keys and values containing $ or backticks, as order may affect expansion. Original order is the default. Sorting cannot infer what a comment describes.
No. Text such as ${HOST}, $HOME or backslash-n is preserved literally. Quotes are scanned only to locate the end of a single-line value, with backslash protecting the next character during that scan. This tool does not determine the runtime meaning of those characters for your loader.
Input is limited to 100,000 UTF-16 units, 5,000 lines and 2,000 assignments; output is limited to 500,000 units. Empty input is supported and errors produce no partial output. Downloads are UTF-8 with selected LF or CRLF line endings. The textarea preview normalizes line endings, and clipboard handling can vary by platform; download when exact selected line endings matter. The final-newline option controls the last terminator without removing preserved blank lines.
