file

Encode a real uploaded file to Base64 or hex text, or decode text back into a downloadable file.

Upload a real .xlsx, .xls, or .csv workbook and convert a sheet to JSON.

Upload a real .xlsx or .xls workbook and convert a sheet to CSV.

Paste CSV text and download it as a real .xlsx workbook.

Paste a JSON array of objects and download it as a real .xlsx workbook.

Compute MD5, SHA-1, SHA-256, or SHA-512 for multiple uploaded files at once, entirely in your browser.

Upload a file and paste an expected checksum (or a sha256sum-style listing) to check for a match.

Convert one continuous hex string, strictly two digits per byte, into a downloadable binary file.

Upload a file or paste text and edit its raw bytes directly in a classic three-column hex editor.

Turn a list of hex values, each of any width, into a downloadable binary file.

Show a classic hexdump -C / xxd-style dump of any text or uploaded file, read-only.

Convert Markdown into a real, downloadable .docx file, built entirely in your browser.

Encrypt or decrypt a real file with password-based AES-256-GCM, entirely in your browser.

Upload a CSV or text file and detect its likely byte encoding: UTF-8, UTF-16, or Windows-1252/Latin-1.

Find a PNG file's exact size in bytes, kilobytes, and megabytes.

Upload any file and see every byte rendered as 8-bit binary, grouped hexdump-style.

Pack a string of user-supplied binary digits into bytes and download the result as a .bin file.