Security
Generate strong secrets, hash text and files, and encrypt notes locally with Web Crypto.
20 free security tools. Every tool runs in your browser, works without an account, and processes files locally whenever the browser allows it.
By the utils.sbs team · Reviewed November 2026
The shelf
All security tools
20 tools · updated for 2026
- Password GeneratorpopularCreate strong random passwords with custom rules.
- Password Strength CheckerEstimate entropy and crack time for a password.
- Passphrase GeneratorGenerate memorable multi-word passphrases.
- SHA-256 GeneratorHash any text with SHA-256 using Web Crypto.
- SHA-512 GeneratorGenerate a SHA-512 digest of text.
- SHA-1 GeneratorGenerate a SHA-1 digest for compatibility checks.
- HMAC GeneratorCreate keyed HMAC signatures with SHA-256.
- AES EncryptEncrypt text with AES-GCM and a password-derived key.
- AES DecryptDecrypt AES-GCM text created by this tool.
- Basic Auth GeneratorCreate a Base64 Basic Authorization header.
- Random Token GeneratorGenerate secure random tokens in hex or Base64.
- Secret ScannerScan text for API keys, tokens and private key patterns.
- Password Entropy CalculatorMeasure password entropy in bits.
- File ChecksumCompute SHA-256 checksums for local files.
- CRC32 GeneratorCalculate CRC32 checksums for text.
- PIN GeneratorGenerate random numeric PIN codes.
- Bulk Password GeneratorGenerate many passwords at once for provisioning.
- Wi-Fi Password GeneratorCreate strong Wi-Fi network passwords.
- Password Policy GeneratorDraft a clear password policy for a team.
- Secure Note EncryptorEncrypt a note with AES-GCM and export ciphertext.
How this shelf works
About security tools
Security tools handle the small, repeatable jobs that show up between real work: passwords and hashes. They are built as focused utilities, so each page does one job without asking you to create an account or install software.
Open a tool, add your input, adjust the settings, and download the result. Processing happens in the browser using the platform APIs available for that file type. Files are not uploaded to a server, so the tool keeps working offline once the page has loaded.
Looking for something else? Browse the full tool index or search the catalogue from the homepage.
Security tool questions
Are security tools free?
Yes. Every security tool on utils.sbs is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use a security tool?
No. The tools are designed to process input in the browser whenever the platform API allows it. Files are not uploaded to a server for processing.
Do I need to install anything to use these tools?
No. Everything runs in a modern web browser. Open a tool page, use the workspace, and download the result.
How do I choose the right security tool?
Each tool page describes what it does, its input and output formats, the engine it uses, and its limitations. Start with the description that matches your job, then open the tool page for the workspace and step-by-step guide.