The file is read in browser memory and a new output is created without overwriting the original.
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Code & file security
.env Security Auditor
Parses .env content in-browser and reports duplicate keys, weak names, empty critical values, likely live secrets, and client-exposed prefixes. Output values are masked; this is not a leak-detection or credential-validation guarantee.
✓ Free✓ No account✓ In-browser
QUICK ANSWER
What does this tool do?
Inspect environment variables for format, duplicates, and secret risk without revealing values.
APPLICATION AND DECISION GUIDE
.env Security Auditor: method and usage
Parses .env content in-browser and reports duplicate keys, weak names, empty critical values, likely live secrets, and client-exposed prefixes. Output values are masked; this is not a leak-detection or credential-validation guarantee.
local file or files of a supported type within the disclosed size limit Confirm the shape first with a small example containing no personal data.
a downloadable new file, size and format metrics, and disclosed processing limits
Practical steps
- Prefer replacing real secrets with synthetic values before pasting.
- Run the local audit and inspect masked findings.
- Rotate credentials and audit history separately if exposure is suspected.
preserving the original and checking that output opens correctly, retains expected pages or frames, size, and visible quality
Code is not executed, and no finding does not prove the absence of vulnerabilities.
Suitable use cases
- Pre-commit .env review
- Preparing example environment files
- Auditing client-exposed prefixes
LEARN THE WORKFLOW
Guides for this tool
Local Security Pre-Checks for .env, SQL, and Unix Permissions
Surface common configuration, query, and permission risks before release without exposing secrets.
Read guide →PWA Installation and Offline Caching: A Privacy-First Design Guide
Understand web app installation, the service worker lifecycle, and cache boundaries that keep sensitive inputs out of persistent storage.
Read guide →ABOUT THIS TOOL
Frequently asked questions
What input does .env Security Auditor accept?+
local file or files of a supported type within the disclosed size limit Prefer replacing real secrets with synthetic values before pasting.
What does .env Security Auditor return?+
a downloadable new file, size and format metrics, and disclosed processing limits The file is read in browser memory and a new output is created without overwriting the original.
How should I validate .env Security Auditor output?+
preserving the original and checking that output opens correctly, retains expected pages or frames, size, and visible quality
Does .env Security Auditor send or store input on a server?+
Tool input is processed in the active tab. Saving to the Workstation or transferring to another tool is a separate choice. Consider browser extensions and shared devices separately; the privacy page explains advertising and network connections.