Hash, encode, and check data in your browser

Generate BLAKE3 hashes from text or files, or check a hash you already have against them. 256-bit by default, any length up to 1,048,576 bytes, optional key.

Convert text to camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, UPPERCASE, lowercase and a URL slug, all at once.

Alternate lowercase and uppercase letters through your text while preserving spacing and punctuation.

Calculate CRC-64 checksums of text or files up to 2 GiB each with the XZ, ECMA-182, Go-ISO, MS, NVMe, Redis or WE variant.

Hash text or files up to 2 GiB with SHA-256 and copy the 64-character hex digest, or paste a published checksum to verify a download.

Check a file's MIME type from its magic bytes, and identify its format, usual extension, category and size, whatever the filename says.

Decode or encode ROT13 text in one step, or switch to ROT5 for digits, ROT18 for letters and digits, or ROT47 for all printable ASCII.

Encode text or files as RFC 1924 Base85, or decode Base85 text back to bytes. Not Ascii85 or Z85.

Decode Base85 text in the Adobe Ascii85 form back to bytes, or encode text and files as Ascii85, the variant PDF and PostScript streams use.

Generate BLAKE3 hashes from text or files, or check a hash you already have against them. 256-bit by default, any length up to 1,048,576 bytes, optional key.

Convert text to camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, UPPERCASE, lowercase and a URL slug, all at once.

Alternate lowercase and uppercase letters through your text while preserving spacing and punctuation.

Calculate CRC-64 checksums of text or files up to 2 GiB each with the XZ, ECMA-182, Go-ISO, MS, NVMe, Redis or WE variant.

Hash text or files up to 2 GiB with SHA-256 and copy the 64-character hex digest, or paste a published checksum to verify a download.

Check a file's MIME type from its magic bytes, and identify its format, usual extension, category and size, whatever the filename says.