Verified
File Analysis
File Signature Checker
Compare the beginning of a local file with a conservative built-in set of common magic-byte signatures.
Tool family
File Analysis
Compare saves, find values, inspect strings, and analyze file structure.
Current catalog
Verified and in-development tools.
Planned and deprecated records are intentionally excluded from Tool Family archives. Each result still carries its own support and processing state.
Verified
File Analysis
File Entropy Analyzer
Calculate Shannon entropy and byte-distribution statistics for a local file, with a bounded block-by-block entropy view.
Verified
File Analysis
Binary String Finder
Extract bounded runs of printable ASCII or ASCII-range UTF-16LE text from a local binary file with exact byte offsets.
Verified
File Analysis
File Splitter
Split one local file into deterministic fixed-size byte chunks and download each chunk separately without uploading the source.
Verified
File Analysis
File Merger
Concatenate multiple local files byte-for-byte in browser selection order into one output file.
Verified
File Analysis
File Slice Extractor
Extract an exact byte range from a local file using a zero-based offset and explicit byte length.
Verified
File Analysis
File Padding Tool
Extend a local file to an explicit target length by adding a chosen byte value at the beginning or end.
Verified
File Analysis
File Truncator
Create a shorter local copy containing only the first requested number of bytes from the selected file.
Verified
File Analysis
Byte Range Replacer
Overwrite an exact byte range in a local file with explicitly supplied hexadecimal replacement bytes without changing file length.
Verified
File Analysis
Byte Range Zeroer
Set an exact byte interval in a local file to zero while preserving all other bytes and the original file length.
Verified
File Analysis
File Byte Reverser
Reverse the entire byte sequence of a local file so the last byte becomes first and vice versa.
Verified
File Analysis
File Nibble Swapper
Swap the upper and lower four-bit nibbles of every byte in a local file while preserving byte positions and file size.
Verified
File Analysis
File XOR Tool
XOR every byte of a local file with a repeating hexadecimal key and generate a same-size transformed copy.
Verified
File Analysis
File Bit Rotator
Rotate every individual byte in a local file left or right by zero through seven bits.
Verified
File Analysis
File Interleave Tool
Interleave two local files by alternating one byte from file A then one byte from file B until both inputs are exhausted.
Verified
File Analysis
File Deinterleave Tool
Split alternating bytes from one local file into separate even-position and odd-position byte streams.
Verified
File Analysis
Repeating Byte Pattern Generator
Generate a local binary file of an exact length by repeating an explicit hexadecimal byte pattern.
Verified
File Analysis
Random Bytes Generator
Generate cryptographically strong random bytes locally with the browser Web Crypto random source and download them as a binary file.
Compatibility first
Read the individual tool page before using a save file.
A tool family groups related jobs, but individual file formats and game versions can have different requirements. The individual tool page is the source of truth for compatibility, processing mode, limitations, and verification details.