Password, Passphrase & Keygen Studio
Generate unbiased Web Crypto CSPRNG passwords, Diceware passphrases, UUID v4/v7, sortable ULIDs, NanoIDs, and 256-bit API secrets, plus audit password bit-entropy and crack time.
Browser Cryptography & Auth Studios
Security tools should never transmit secrets over the network. Every studio in this collection uses Web Crypto and local deterministic algorithms in browser memory.
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37+ tools across 11 categories
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Hash, Bcrypt, AES & Keypair Studio
Compute MD5/SHA-1/256/384/512 text & file checksums, sign HMACs, benchmark & verify bcrypt hashes, encrypt with PBKDF2 AES-256-GCM, and generate RSA-OAEP/ECDSA PEM & JWK keypairs.
JWT, OAuth PKCE & TOTP Auth Studio
Decode JWT headers & OIDC claims locally, verify and mint HS256/384/512 tokens via Web Crypto, generate OAuth 2.0 PKCE S256 challenges, and test RFC 6238 TOTP 2FA codes.
Encoding, URL & Unicode Studio
UTF-8 Base64 & Base64URL encoder/decoder, local file Data URI builder, interactive URL & query-param editor, HTML entity/JSON string escaper, and Unicode/Hex/Binary byte inspector.
All tools in this topic
Security & Crypto Studios
Hash, Bcrypt, AES & Keypair StudioCompute MD5/SHA-1/256/384/512 text & file checksums, sign HMACs, benchmark & verify bcrypt hashes, encrypt with PBKDF2 AES-256-GCM, and generate RSA-OAEP/ECDSA PEM & JWK keypairs.JWT, OAuth PKCE & TOTP Auth StudioDecode JWT headers & OIDC claims locally, verify and mint HS256/384/512 tokens via Web Crypto, generate OAuth 2.0 PKCE S256 challenges, and test RFC 6238 TOTP 2FA codes.Password, Passphrase & Keygen StudioGenerate unbiased Web Crypto CSPRNG passwords, Diceware passphrases, UUID v4/v7, sortable ULIDs, NanoIDs, and 256-bit API secrets, plus audit password bit-entropy and crack time.
Developer & Code Studios
Cron, Timestamp & Timezone StudioTranslate 5-field cron schedules into plain English with next 10 IANA runs, convert Unix epoch (s/ms/μs) ↔ ISO 8601, compare global timezone overlaps, and compute business-day deltas.Encoding, URL & Unicode StudioUTF-8 Base64 & Base64URL encoder/decoder, local file Data URI builder, interactive URL & query-param editor, HTML entity/JSON string escaper, and Unicode/Hex/Binary byte inspector.Flowchart, Sequence & ER Diagram StudioAuthor deterministic Flowcharts, Sequence Diagrams, and Database Entity-Relationship (ER) schemas from clean text DSLs with live SVG layout and high-DPI PNG/SVG export.JS, CSS & HTML Code StudioMinify, mangle, or beautify JavaScript (via Terser AST), CSS, and HTML in your browser with instant raw, minified, and real GZIP byte-savings comparisons.Regex & Glob Pattern StudioTest ECMAScript regular expressions with live capture groups and substitutions, inspect deterministic token-by-token regex explanations, and match .gitignore/bundler glob patterns.
Security Studios FAQ
Quick answers about the workflow, privacy, and where this tool fits in a broader job.
Are private keys, passphrases, or JWTs ever logged?
Never. Every operation runs locally inside window.crypto with zero network calls.
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