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Security Tools
34 tools in this collection. Choose a task below or search the complete FeuTex toolkit.
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Content Security Policy Analyzer
Inspect CSP directives, duplicates and common broad source patterns.
Open tool →SecurityCSV Formula Neutralizer
Prefix potentially formula-interpreted cells with an apostrophe.
Open tool →SecurityEmail Local-Part Masker
Replace common email local parts with a fixed marker while retaining domains.
Open tool →SecurityFree Hash Tool
Text/file hashing MD5 and SHA family Hex/Base64 Whitespace options
Open tool →SecurityHash Checker Online
Text/file checksum MD5/SHA family Expected digest verification Auto-detect algorithm
Open tool →SecurityHash Formatter
Hex/UUID digest normalization Record splitting Reverse bytes Format diagnostics
Open tool →SecurityHash Identification and Candidate Verifier
digest length identification hex/Base64 decoding candidate hash checks dictionary checks
Open tool →SecurityHTTP Basic Authorization Decoder
Decode a Basic authorization value and split username from password.
Open tool →SecurityHTTP Security Header Inspector
Check pasted HTTP headers for key security policy fields.
Open tool →SecurityIPv4 Log Address Masker
Mask the final octet of valid IPv4 addresses found in text.
Open tool →SecurityJWT Expiry & Claims Inspector
Inspect exp, nbf and iat claims relative to a supplied Unix timestamp.
Open tool →SecurityLenovo UUID Tool
SMBIOS bytes to UUID UUID to SMBIOS bytes Batch UUIDv4 generation
Open tool →EncodingOnline Base64 Key Generator
Crypto random bytes Base64/Base64URL/hex Entropy count Env assignment
Open tool →SecurityOnline Generator Password
batch passwords required character classes exclude similar avoid repeated characters
Open tool →SecurityOnline Hash Converter
text/hex/Base64/file hashing MD5 and SHA family hex/Base64 digest conversion
Open tool →SecurityOnline Hash Generator Bcrypt
Effortlessly generate bcrypt hashes with our secure online tool. Perfect for securely hashing passwords and sensitive data.
Open tool →SecurityOnline Hash Generator for a File
file digests multiple algorithms file metadata uppercase output
Open tool →SecurityOnline MD5 Hash Converter
MD5 generation uppercase output expected digest comparison
Open tool →SecurityOnline UUID Converter
UUID normalization Base64/Base64URL URN/braces C#/Java snippets version/variant
Open tool →SecurityOnline UUID Generator (Version 5)
Generate deterministic UUIDv5 values from a namespace UUID and name (SHA-1). Supports presets (DNS/URL/OID/X.500), bulk input, validation, and copy.
Open tool →SecurityOnline UUID Generator v4
UUIDv4 batches compact/braces/URN uppercase randomness options
Open tool →SecurityOnline UUID Generator Version 7 (UUIDv7)
Generate RFC 4122 UUID version 7 (UUIDv7) in your browser. Bulk generate, choose dashed or compact format, optional uppercase, and copy instantly with no network calls.
Open tool →SecurityPEM Block Inspector
Inspect PEM labels and decoded byte lengths without interpreting certificate trust.
Open tool →SecurityRedact Sensitive JSON Keys
Replace values under sensitive key names at any nesting depth.
Open tool →SecurityRuby Hash Formatter Online
Ruby hash subset parser pretty/minify symbol label/quote settings Ruby to JSON
Open tool →SecuritySensitive URL Parameter Redactor
Redact selected query parameters and URL credentials from a list of links.
Open tool →SecuritySet-Cookie Attribute Inspector
Inspect a single Set-Cookie header and flag common attribute omissions.
Open tool →SecuritySSH Public Key SHA256 Fingerprint
Calculate an OpenSSH-style SHA256 fingerprint from a public-key blob.
Open tool →SecuritySubresource Integrity Hash Generator
Generate a SHA-based integrity token for the exact pasted UTF-8 resource text.
Open tool →SecurityUUID Checker
batch UUID validation log extraction normalization v4 generation
Open tool →SecurityUUID Tool for Minecraft
Minecraft offline UUID UUID normalization v4 generation
Open tool →SecurityUUID Tools
v4/v7 generation UUID inspect batch validation JSON/CSV/URN formats
Open tool →SecurityUUID v4 Generator
Generate random UUID version 4 identifiers using browser cryptography.
Open tool →SecurityUUID Version Generator: v1, v4, v5 and v7
Generate time-based, random or deterministic UUIDs with version selection and batch output.
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