Files & Storage
Verify integrity with hashes, batch-rename files and work with archives — safely, on your device.
11 tools
Archive Studio — ZIP, TAR & tar.gz Viewer, Extractor & Creator
Drop a ZIP, TAR, tar.gz or gz to list what is inside — including ZIPs made on Japanese Windows whose file names are normally garbled. Extract safely, re-create a ZIP with UTF-8 names, or build a ZIP / tar.gz from folders. Everything runs on your device.
Batch Rename
Combine rules to rename files in bulk. Check old → new names live, catch duplicates and invalid names, then save renamed copies as a ZIP or into a folder. Files are never uploaded.
Duplicate Files
Load a whole folder and see groups of files whose content is byte-for-byte identical, with the space they waste. Nothing is uploaded and nothing is deleted: save the keep/duplicate verdicts as CSV or JSON and clean up with your own file manager.
File Hash — Checksum Calculator & Verifier
Drop a file to get its SHA-256 (and more); paste the published hash to see match or mismatch instantly. Even multi-gigabyte ISOs are read in chunks on your own device — nothing is uploaded.
Universal File Inspector
Drop any file to see its real format (from the content), its structure and metadata, what to watch out for, and which tools can process it — before opening it, or before sending it to someone.
Archive Filename Fix — ZIP Mojibake & Mac Clutter Repair
Drop garbled ZIPs and the clutter a Mac mixed in, and get them repaired in one go. See the names before and after side by side; compressed data is copied without recompression into a UTF-8 ZIP. Several ZIPs at once, all on your device.
Disk Usage Analyzer
Load a folder and see where the space goes as a treemap. Click a rectangle to drill down, then export tables by extension, kind, largest files, old files and duplicate candidates to Excel or CSV. Neither file names nor contents leave your device.
Extract Anything
Open a file and get its text, images, tables, URLs / e-mail / phone numbers, QR codes and barcodes, attachments and metadata, each with a count and the place it came from (file, page, sheet). What could not be extracted is explained. OCR is not supported.
File Manifest
Load a folder and export a list of relative paths, sizes, modified times and types to Excel or CSV. Neither file names nor contents are uploaded. Use it for delivery lists, inventories, audits and backup records.
File Split & Join
Cut a file to a size you choose (around 18 MB suits a 25 MB mail limit), save it as name.ext.001, .002 … and put it back together on the same page. Multi-GB files are read in small pieces on your device, so memory stays flat. Missing or mixed-in parts are reported before joining, and a SHA-256 record confirms the result.
Metadata Studio
A workbench for looking at, fixing and comparing the author, company, capture time and location stored in photos, PDFs and Office files. Every edit is re-read and verified, with a before/after diff. To just strip everything, use the dedicated remover tools.