A grab-bag of handy utilities for developers and security researchers: network and DNS tools, file inspectors, image tools, AI tokenizers and more. Everything runs in your browser.
CI/CD and infrastructure secrets
DNS, IP and protocol utilities
Create customizable QR codes online for WiFi network access.
Open toolCreate customizable QR codes online for text.
Open toolQuickly convert any URI to a Multiaddr and vice versa for network applications or blockchain tools.
Open toolDecode TLS cipher suite codes and names into their parts. Runs offline.
Open toolDecode MQTT control packets into header and fields. Runs offline.
Open toolDecode gRPC-Web frames and their protobuf payloads. Runs offline.
Open toolDecode CoAP IoT packets into header, options and payload. Runs offline.
Open toolImage inspection and conversion
Transform and format text
Inspect, parse and convert files
Easily check file integrity by generating and comparing hash values using various algorithms.
Open toolUpload a .DS_Store file to extract hidden filenames and folder paths. Useful for web recon, bug bounty, and penetration testing.
Open toolEasily decode Protobuf messages for debugging and analysis.
Open toolDetect file types from magic bytes, hex data, Base64 content, or uploaded files.
Open toolTokenizers and AI helpers
Credentials and secret recovery
Instantly decode any X.509 certificate (PEM, DER, or hex). View subject, issuer, expiry, SANs, fingerprints, and more - free and private.
Open toolScan a dumped .git directory for leaked secrets, keys, and credentials. Runs offline.
Open toolScan pickle & ML model files for malicious code-execution imports. Runs offline.
Open toolDecode, sign, verify & attack JWTs (alg:none, confusion, brute-force) - fully client-side.
Open toolDecode ASN.1 / DER from PEM, base64 or hex into a tree. Runs offline.
Open toolDecode SAML requests and responses into readable XML. Runs offline.
Open toolConvert Kerberos tickets between kirbi and ccache. Runs offline.
Open toolGenerate keys, sign and verify with Ed25519 or secp256k1. Runs offline.
Open toolGet SHA256/MD5 fingerprint and randomart of an SSH key. Runs offline.
Open toolConvert keys between JWK and PEM (RSA, EC). Runs offline.
Open toolEstimate password entropy and crack time. Runs offline.
Open toolSplit and recover secrets with Shamir's Secret Sharing. Runs offline.
Open toolDetect, strip and hide messages in zero-width characters. Runs offline.
Open toolEveryday developer utilities
Generate a Solidity interface from an ABI JSON (functions, events, errors, structs). Runs offline.
Open toolEncode & decode Ethereum ABI calldata, return data, and event logs. Runs offline.
Open toolConvert IDN domains between Unicode and Punycode (xn--). Runs offline in your browser.
Open toolConvert Unix epoch timestamps to dates and back. Runs offline.
Open toolGenerate and inspect UUIDs and ULIDs. Runs offline.
Open toolConvert numbers between bases and view a hexdump. Runs offline.
Open toolDecode Discord, Twitter and Instagram snowflake IDs. Runs offline.
Open toolBuild and parse data: URIs. Runs offline.
Open toolValidate Luhn, IBAN and ISBN checksums. Runs offline.
Open tool