Inspect and verify a file
Review useful file details, compare its extension with its detected signature, and calculate SHA-256 or SHA-512 checksums.
Tool collection
Inspect files, manage ZIPs, and clean data
Check an unfamiliar file, verify a download with a checksum, create or safely inspect a ZIP archive, or prepare structured CSV and JSON data for another application.
3 focused toolsNo account requiredLocal-first processing
Choose a workspace
File, ZIP & data tools
Open the tool that matches your task. Each workspace keeps its controls and results focused on one type of job.
Files & Data
Open tool File Inspector
Review useful file details, compare the detected file type with its extension, and calculate cryptographic hashes for verification without uploading the file.
Files & Data
Open tool Archive Essentials
Bundle files into a ZIP, inspect an existing archive before opening it, and extract files with checks for unsafe paths and suspicious archive expansion.
Files & Data
Open tool CSV & JSON Essentials
Profile structured data, repair common CSV issues, remove duplicates, filter and sort rows, manage columns, and convert between tabular data and JSON.
Common tasks
What you can do
Create or inspect a ZIP
Bundle files into an archive or review and extract an existing ZIP with checks for unsafe paths and suspicious expansion.
Clean structured data
Profile, filter, sort, deduplicate, validate, and convert CSV, TSV, and JSON data before exporting the result.