99 tools · all client-side · private

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[ developer toolkit ]

Base encoding, cryptographic hashing, checksums, text processing, color conversion, network utilities — everything runs in your browser. Nothing leaves your machine.

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Base Encodings
16Base16 (Hex)0-9A-F, 100% overhead 32Base32RFC 4648, TOTP keys 3HBase32hexExtended hex, 0-9A-V 36Base36URL slugs, case-insensitive 58Base58Bitcoin, IPFS, no lookalikes 62Base62URL shorteners, 0-9a-zA-Z 64Base64RFC 4648, MIME 65Base65Custom 65-symbol encoding 85Base85 (Ascii85)PDF, Git diffs, ~25% overhead 91Base91~23% overhead, densest ASCII
Number & Data Converters
NbNumber Base ConverterArbitrary bases 2–64, BigInt EnEndianness ConverterLE ↔ BE byte swap FlIEEE 754 Float InspectorSingle/double precision HxByte DumperHex dump + ASCII sidebar BWBitwise CalculatorAND/OR/XOR/NOT/SHIFT
Cryptographic Hashes
M5MD5128-bit, broken since 2004 S1SHA-1160-bit, deprecated S2SHA-2224/256/384/512-bit S3SHA-3Keccak sponge, NIST standard B2BLAKE2Fast, WireGuard, modern B3BLAKE3Tree-based, very fast RPRIPEMD128/160-bit, Bitcoin WPWhirlpool512-bit, AES-based TGTiger64-bit optimized, fast SMSM3Chinese national standard
Fast Hashes & Checksums
CRCRC8/16/32/32C, error detection A3Adler-32zlib checksum FNFNVFNV-1/FNV-1a, 32 & 64-bit MUMurmurHash3Fast, good distribution XXxxHashXXH32/XXH64, extremely fast JKJenkinsOAAT & lookup3 SHSipHash-2-4Keyed, hash-flood resistant
Password & Key Derivation
HMHMACSHA-1/256/512 keyed auth PBPBKDF2Iterated HMAC key stretching BCbcryptBlowfish-based, salted A2Argon2Memory-hard, best practice
Text Escaping & Safety
URURL / Percent Encoding%XX hex escapes HTHTML Entities& < > " JSJSON Escape\n \" \uXXXX C\C-Style Escapes\t \n \\ \xFF QPQuoted-PrintableEmail MIME, =XX bytes
Character Sets & Text Encodings
A7ASCII7-bit, 128 code points U+UnicodeUTF-8/16/32, code points EBEBCDICIBM mainframe encoding XNPunycodeIDN, xn-- domains
Ciphers & Obfuscation
R1ROT13 / CaesarLetter rotation, shift cipher R4ROT47Full ASCII rotation (33–126) ·−Morse CodeDots & dashes, telegraphy BDBaudot Code5-bit teletype encoding NANATO PhoneticAlpha Bravo Charlie
Older Binary-to-Text
UUUUEncodePre-MIME Unix encoding BHBinHexClassic Mac OS encoding YNyEncUsenet binary posting
Domain-Specific Encodings
B3Bech32 / Bech32mBitcoin SegWit addresses GHGeohashLat/lon → short string PMPEMX.509 cert/private key wrapper PQProquintPronounceable binary IDs iHS-record / Intel HEXFirmware hex parser
Specialized Hashing
MKMerkle TreeHierarchical hashing demo SiSimHash & MinHashNear-duplicate detection PHPerceptual HashaHash, dHash — image-like BFBloom FilterProbabilistic set membership
Text Utilities
CCCase Converterupper/lower/title/snake/camel LnLine ToolsSort, deduplicate, shuffle, trim WCWord / Character CounterSentences, paragraphs, reading time WsWhitespace VisualizerShow ¶ → ␣ as symbols DfText Diff ViewerSide-by-side comparison RxRegex TesterHighlight matches, capture groups LILorem Ipsum GeneratorConfigurable paragraphs & words SlSlug GeneratorURL-safe string from text
Generators
U4UUID / GUIDv4 random & v5 name-based RSRandom String GeneratorConfigurable charset & patterns PWPassword GeneratorPronounceable or fully random ULULIDSortable unique identifiers NDNano IDCompact unique IDs
Timestamp & Time
TSUnix Timestamp ConverterEpoch ↔ human readable DTDate FormatterISO 8601 / RFC 3339 / RFC 2822 SWStopwatchCountdown & timer
Web & Network
DUData URI GeneratorFile → data: URI JWJWT DecoderBase64URL decode claims UPURL ParserScheme, host, port, path, query QSQuery String BuilderParse & construct query strings IPIP Address Range CalculatorCIDR subnet breakdown HSHTTP Status CodesSearchable reference guide
Color Tools
CVColor ConverterHEX ↔ RGB ↔ HSL ↔ HSV ↔ CMYK CTColor Contrast CheckerWCAG AA/AAA compliance GRGradient GeneratorCSS linear/radial output
Compression Demos
RLRun-Length EncodingRLE visual demo DLDelta EncodingStore consecutive differences HFHuffman CodingTree builder & visualizer
Crypto & Security
PSPassword Strength MeterEntropy estimation, crack time EnEntropy CalculatorShannon entropy of input FaInteger FactorizationTrial division, Pollard's rho MPModular Exponentiationa^b mod n at arbitrary precision NTNumber TheoryGCD, LCM, φ(n), coprime check
String Search & Similarity
LVLevenshtein DistanceEdit distance + alignment HDHamming DistanceCharacter & bit difference LCLongest Common SubstringLCS & subsequence finder SXSoundex / MetaphonePhonetic matching & encoding