File Size Calculator
Inspect exact and human-readable file sizes.
Inspect, compare, rename and prepare local files for everyday work. Every tool is available without ads or an account.
Inspect exact and human-readable file sizes.
Inspect browser-reported MIME types and extensions.
Encode a local file as Base64.
View the first 64 KB of a file as hexadecimal.
Compare two files securely by SHA-256.
Combine text files in selected order.
Create a JSON manifest with names, sizes and hashes.
Sanitize selected filenames and download them as ZIP.
Add a prefix to selected filenames.
Add a suffix before every extension.
Replace exact text across selected filenames.
Rename files with padded sequence numbers.
Convert selected filenames to lowercase.
Convert selected filenames to uppercase.