Verify hashes and signatures
Generate hashes, compare checksums, and create HMAC values for fixtures.
Free Crypto Tools
Generate hashes, HMACs, JWT fixtures, password placeholders, certificate fingerprints, and encrypted text fixtures locally.
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Popular workflows
Prepare auth test values
Decode JWTs, generate local JWT fixtures, and create TOTP test secrets.
Inspect certificates and keys
Inspect PEM certificate, CSR, and public key blocks before using them in docs or test fixtures.
Common tasks
- Generate SHA hashes and compare expected checksums.
- Create HMAC values for development fixtures.
- Inspect PEM certificates, CSRs, and key blocks locally.
- Generate development-only htpasswd, bcrypt placeholders, and encrypted text fixtures.
Use Fileees Security Tools when you need a focused browser workflow with clear privacy notes, practical tool order, and no signup for supported local tasks.
Which security tool should I use?
- Start with the Security Tools tool that matches your current input, then use related tools only when the next output is clear.
- Prefer browser-local tools for personal files, pasted snippets, and one-off workflows before considering any remote lookup.
- Check the output visually or structurally before sharing it, especially when the source file came from a form, scan, or copied text.
Workflow order
- Identify the exact source format and the result you need.
- Run the smallest matching tool first, then inspect the output before chaining another step.
- Copy or download the final result only after checking privacy notes, limitations, and file quality.
Common mistakes to avoid
- Uploading or pasting sensitive production data without checking whether the tool is browser-local or a marked remote exception.
- Skipping output review because the task looked simple.
- Expecting a lightweight browser tool to replace a full desktop workflow for every edge case.
Limitations before you rely on the result
- Very large files or pasted inputs can be limited by browser memory and device speed.
- Generated output is a practical starting point and should be reviewed before legal, security, or production use.
- Remote network tools are clearly marked exceptions and may contact guarded Fileees functions for public lookups.
All tools in this topic
Hash Generator Generate SHA and MD5 hashes for text snippets HMAC Generator Generate HMAC signatures for text with SHA-256 or SHA-512 in the browser Hash Compare Compare two hashes or strings with normalized whitespace JWT Decoder Decode JWT header and payload without sending tokens anywhere JWT Generator Generate local HS256 JWTs for development fixtures SHA Checksum Generate SHA-256 checksums for pasted text Password Strength Checker Estimate password strength, entropy, and practical improvement hints locally Token Generator Generate random hex, Base64URL, and alphanumeric tokens with browser crypto Nanoid Generator Generate short URL-safe IDs for prototypes, tests, and documentation Random Hex Generator Generate cryptographically random hexadecimal strings Passphrase Generator Generate memorable random passphrases locally TOTP Secret Generator Generate random Base32 secrets for authenticator app testing UUID Generator Generate UUIDs and ULIDs for tests or documentation UUID Namespace Helper Generate namespace-style UUID fixtures for docs and tests htpasswd Generator Generate development-only Apache htpasswd style entries in the browser Bcrypt Hash Helper Inspect bcrypt hash structure and generate safe development placeholder hashes Certificate Parser Inspect PEM certificate blocks, fingerprints, and encoded metadata hints locally CSR Inspector Inspect PEM certificate signing request blocks and fingerprints locally RSA Key Inspector Inspect PEM public and private key block type, size hints, and fingerprints locally Text Encryption Helper Create browser-local AES-GCM encrypted text fixtures from passphrases
Frequently asked questions
Should I paste production secrets here?
No. Use these tools for development fixtures and local checks, not production secrets.
Can I generate HMAC values?
Yes. HMAC Generator supports local HMAC fixture generation.
Can I inspect PEM certificates locally?
Yes. Certificate Parser, CSR Inspector, and RSA Key Inspector summarize PEM blocks and fingerprints locally.
Are generated password hashes production-grade?
No. P3 password helpers are for development placeholders and structure inspection, not production credential storage.