Security & QR Suite
Generate QR codes, UUIDs, passwords, and cryptographic hashes client-side. All utilities run 100% locally in your web browser with zero server data retention.
At a glance
Security & QR is a suite of 15 free browser-based tools. Generate QR codes, UUIDs, passwords, and cryptographic hashes client-side. Every utility runs 100% client-side in your browser with no uploads, no signups, and no server queues.
Custom QR Code Generator
Create free, permanent QR codes for URLs, text, Wi-Fi networks, and emails. 100% private in-browser generator with instant PNG and vector SVG download.
Secure Password Generator
Generate strong, cryptographically secure passwords, memorable passphrases, and PINs in your browser using the Web Crypto API. 100% private with live entropy meter.
UUID / GUID Generator
Generate cryptographically random UUIDv4 and time-ordered UUIDv7 identifiers online. Customize hyphens, uppercase, braces, and bulk generation up to 500.
Cryptographic Hash & Checksum Generator
Compute SHA-256, SHA-512, SHA-384, SHA-1, and MD5 hashes simultaneously for text or local files. 100% private in-browser Web Crypto processing with live checksum matching.
Secure API Token & Secret Key Generator
Generate cryptographically secure API tokens, secret keys, Hex digests, and Base64URL secrets using CSPRNG. 100% private in-browser security tool.
HMAC Signature & Authentication Hash Generator
Compute and verify cryptographic HMAC signatures (SHA-256, SHA-512, SHA-384, SHA-1) in Hex, Base64, and Base64URL formats. 100% private in-browser Web Crypto tool.
Base58 Encoder & Decoder
Encode and decode Base58 strings online. Supports Bitcoin, IPFS, Flickr, and Ripple alphabets, Hex & Text formats, and Base58Check. Fast & 100% client-side.
Hex Encoder & Decoder
Convert text to hex and hex to text online. Supports UTF-8 emojis, custom delimiters (space, 0x, \x, colons), hexdump view, and instant client-side processing.
TOTP 2FA Authenticator Code Generator
Generate TOTP two-factor authentication codes online. Supports Base32 keys, SHA-1/256/512, 6/8 digits, and live countdown timer. 100% private in-browser tool.
Base32 Encoder & Decoder
Encode text and hex to Base32 and decode Base32 strings online. Supports RFC 4648, Crockford, Base32hex, and z-base-32 alphabets. 100% private in-browser tool.
RSA Key Pair Generator
Generate secure RSA public and private key pairs online. Supports 2048, 3072, and 4096-bit keys in PEM and OpenSSH format. 100% client-side privacy.
JWT Token Builder & Signer
Build, customize claims, sign, and verify JSON Web Tokens (JWT) using HMAC algorithms (HS256, HS384, HS512) directly in your browser.
Bcrypt Hash Generator & Verifier
Generate and verify cryptographically secure Bcrypt password hashes in your browser. Configurable cost factors (4-14) and support for $2a, $2b, and $2y prefixes.
SRI Hash Generator
Generate Subresource Integrity (SRI) hashes and HTML script/link tags online. 100% private in-browser SHA-256, SHA-384, and SHA-512 SRI generator.
PII Redactor
Scrub emails, phone numbers, credit-card numbers, SSNs, IPv4 addresses, and custom keywords from pasted text. Free, batch-safe, and 100% private in your browser.
About the Security & QR Pipeline
Every tool in the Security & QR suite is engineered with strict adherence to client-side computing standards. Unlike traditional cloud services that transfer your confidential files, code, or financial records to third-party server farms, UtilityHub processes every byte locally within your browser memory using HTML5 Canvas, Web Cryptography, and ECMAScript Web APIs.