Private ZIP tools
Fast local utilities that run in your browser.
Private ZIP Extractor
Open and inspect ZIP files locally in your browser without uploading them.
ToolCreate ZIP File
Build a ZIP archive from local files and download it from your browser.
ToolZIP File Checker
Inspect ZIP signatures and common structure problems before you extract.
ToolCompression Calculator
Estimate likely file size reduction before compressing files.
ToolArchive Extension Checker
Identify archive and package file extensions in plain English.
ToolFile Hash Checker
Calculate SHA-256 fingerprints locally to verify downloads without uploading files.
ToolArchive Size Converter
Convert KB, MB, GB, and TB file sizes and estimate transfer/storage needs.
ToolZIP Safety Checklist
Run through a local checklist before opening archives from email, forums, or unknown sources.
ToolFile Signature Checker
Read the first bytes of a file locally and compare them with common archive signatures.
ToolArchive Manifest Generator
Create a local CSV/JSON manifest of selected files before packaging or sharing an archive.
ToolSplit Archive Planner
Estimate how many archive parts you need for email, upload, or storage size limits.
ToolZIP Bomb Risk Checker
Inspect ZIP compression ratios locally and flag suspiciously expanded entries.