.env Toolkit
Parse, format, and validate dotenv-style KEY=VALUE text while preserving the boundary that this is a text utility, not a secret manager. Duplicate keys and malformed quotes are made visible before a file is reused.
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What this tool is for
Parse, format, and validate dotenv-style KEY=VALUE text while preserving the boundary that this is a text utility, not a secret manager. Duplicate keys and malformed quotes are made visible before a file is reused.
How to use
- Paste a redacted or non-sensitive env sample.
- Validate for key syntax, duplicates, and quote errors.
- Format or export parsed
JSONonly after reviewing comments and value handling.
Example
Validate `PORT=3000` plus a duplicate `PORT=4000` and resolve the duplicate before formatting.
FAQ
Does it load variables into my system?
No. It only processes pasted text in the page.
Is it safe for real secrets?
Avoid pasting credentials; use redacted samples and a proper secret manager.
Reproducible examples
Known inputs and expected results
Run these examples in the workspace above and compare the result with the documented output.
Parse and sort assignments
- Input
- PORT=3000 NODE_ENV=production
- Options
- Choose parse/sort mode.
- Action
- Validate and format.
- Expected output
- Two valid assignments, sorted deterministically when sorting is selected.
- Explanation
- Values remain text and are not loaded into the operating system.
Quoted value and comment
- Input
- # local sample GREETING="hello world" EMPTY=
- Options
- Preserve the comment and quoted space.
- Action
- Validate, then inspect normalized output.
- Expected output
- GREETING has value hello world and EMPTY is explicitly empty.
- Explanation
- The supported dotenv subset distinguishes comments, quotes, and empty assignments.
Error or unsupported case
Invalid key name
- Input
- BAD-NAME=value
- Expected error or limit
- The line is rejected because a supported key may contain letters, digits, and underscores but not a hyphen.
- Safer alternative
- Use a redacted valid KEY=VALUE sample or the exact parser used by the target runtime; substitution-looking text is treated as inert text and never executed.
When not to use this tool
- Secret storage, masking, or credential validation
- Shell expansion, multiline certificates, or every dotenv library dialect
Algorithm and assumptions
The parser accepts a documented KEY=VALUE subset, validates key names and quotes, reports duplicate keys, and never executes substitutions or exports variables.
Input and output
Input is dotenv-style text. Output is validation findings, normalized text, or parsed JSON.
Supported formats and behavior
- Comments and blank lines
- Quoted and unquoted values
- Duplicate-key detection
Limits
- No shell expansion, secret storage, or runtime evaluation
- Multiline and platform-specific dotenv features are limited
Edge cases and common errors
- Values can contain equals signs
- Unclosed quotes are rejected
- Never paste production secrets into an online page
Release testing
Checks cover comments, blanks, quotes, equals signs, duplicates, invalid keys, format, parse, copy, and clear.
Privacy boundary
The input and result stay in this browser session. ZZP Box does not upload or store the values entered in this tool.
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