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Encode text or uploaded files as Base64, or decode Base64 text and files back to binary. It all runs in your browser, so your input stays on the device.

Encode bytes as whole-value Base62, or decode Base62 text back to bytes. Choose either supported digit and letter ordering.

Encode text or uploaded files as lowercase hexadecimal, or decode hex back to binary. It all runs in your browser, so your input stays on the device.

Encode bytes with a self-identifying multibase prefix, or detect the prefix and decode an existing multibase string.

Encode bytes with Bitcoin-alphabet Base58 or Base58Check, or decode them back. Supports optional Base58Check version-byte validation.

Generate SHA-256 digests from text or uploaded files: 256 bits, 32 bytes, 64 hexadecimal characters. It all runs inside your own browser, on your device.

Generate MD5 digests from text or uploaded files: 128 bits, 32 hexadecimal characters. MD5 is cryptographically broken and is for legacy use only.

Generate BLAKE2b digests at 128, 256, 384 or 512 bits, or any length from 1 to 64 bytes, from text or uploaded files. It runs inside your browser.

Generate BLAKE3 hashes from text or uploaded files, 256-bit by default and any length up to 1,048,576 bytes, with optional keyed hashing.

Identify a file's format, MIME type, recommended extension, category and size from its contents. It all runs inside your browser, on your own device.

Generate SHA-512/224, SHA-512/256 or full SHA-512 digests from text or uploaded files. Everything runs inside your browser, on your own device.

Generate MD4 digests from text or uploaded files for legacy compatibility. MD4 is cryptographically broken. It all runs inside your browser.

Validate pasted or uploaded CSV data with custom delimiters, header handling and an optional expected column count. It runs inside your browser.

Encode bytes with a human-readable prefix and Bech32 or Bech32m checksum, or validate and decode an existing string.

Encode text or files as RFC 9285 Base45, or decode Base45 text back to bytes. Designed for compact use with QR alphanumeric mode.

Encode text or uploaded files as Base32, or decode Base32 text and files back to binary. It all runs in your browser, so your input stays on the device.

Generate SHA-1 digests from text or uploaded files: 160 bits, 40 hexadecimal characters. SHA-1 is not suitable for new security-sensitive uses.

Generate SHAKE128 or SHAKE256 extendable-output hashes of 1 to 1,048,576 bytes from text or uploaded files. It all runs inside your own browser.

Generate CRC-32 checksums from text or uploaded files using ISO-HDLC, CRC-32C, BZIP2, MPEG-2, cksum and six more named variants, in your browser.

Generate CRC-64 checksums from text or uploaded files using the XZ, ECMA-182, Go-ISO, MS, NVMe, Redis or WE variant. It all runs in your browser.

Generate BLAKE2s digests at 128, 160 or 256 bits, or any length from 1 to 32 bytes, from text or uploaded files. It runs inside your browser.

Generate placeholder text by paragraph, sentence or word, with control over length, vocabulary, truncation and an optional seed for repeatable output.

Flip text 180 degrees using Unicode lookalike glyphs, preserving characters that have no upside down form. It all runs inside your own browser.

Convert text to snake_case, so words become lowercase and spaces become underscores. It all runs inside your browser, so your text stays on the device.

Alternate lowercase and uppercase letters through your text while preserving spacing and punctuation. It all runs inside your browser, on your device.

Transform text with the ROT13, ROT5, ROT18 or ROT47 substitution ciphers. It all runs inside your browser, so your text stays on the device.

Percent-encode or decode URL text using component, path, query, fragment, or userinfo rules. It runs in your browser, so your input stays on the device.

Encode text or uploaded files as Adobe Ascii85, or decode Ascii85 back to binary. It all runs in your browser, so your input stays on the device.

Generate FNV-1 or FNV-1a 32-bit and 64-bit non-cryptographic hashes from text or uploaded files. It all runs inside your browser, on your device.

Generate Adler-32 checksums from text or uploaded files. Adler-32 is built for speed rather than security, and it runs inside your own browser.

Generate SHA-384 digests from text or uploaded files. Everything runs inside your own browser, so the data you paste never leaves the device.

Generate SHA-224 digests from text or uploaded files. Everything runs inside your own browser, so the data you paste never leaves the device.

Generate Keccak-224, Keccak-256, Keccak-384 or Keccak-512 hashes from text or uploaded files. It runs in your browser, so nothing leaves the device.

Generate SHA3-224, SHA3-256, SHA3-384 or SHA3-512 digests from text or uploaded files. Everything runs inside your own browser, on your device.