Back to Free Tools
FREE TOOLS
File manifest and size analyzer
Analyze selected file sizes and extensions, with optional SHA-256 checksums in a JSON manifest.
Files
JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Choose local files and the stated settings.
- Select Process files and review the result before downloading.
- Cancel stops processing. Reset clears working data and downloads.
Examples
Files with different names can contain identical bytes. SHA-256 identifies candidates; duplicate detection also compares the actual bytes.
Limitations
- Up to 100 files totaling 32 MiB, a 40 MiB output limit and a 120-second worker deadline. No files are executed, uploaded, deleted or changed on disk.
- File-to-hex accepts up to 2 MiB. Hex-to-file accepts up to 6 MiB of UTF-8 text and 2 MiB decoded bytes. Only hex digits and whitespace are accepted; hex-dump offsets and ASCII columns are not parsed.
- The splitter allows at most 100 raw parts of up to 16 MiB. The joiner requires the DTH manifest and all parts; split ZIP/RAR volumes and arbitrary unverified concatenation are not supported.
- SHA-256 equality does not authenticate the source. Modification times and MIME hints come from browser metadata. Filename sanitization preserves content and extensions; it does not make file contents safe to execute.
Related tools
No items found.