Fix garbled ZIP filenames online
Open your original ZIP and compare CP932 and UTF-8 filenames side by side. Choose the names you recognize before extracting. Your files stay on this device.
Preview reads filenames. Extraction also processes the file contents.
Compare the filenames in your ZIP with the names you can extract.
Paste one name per line. The text stays on your device.
Choose the reading you recognize to copy it.
Paste a name to compare its CP932 and UTF-8 readings.
The browser limit is 32 MiB in total. On Windows, the desktop app can open larger archives.
Why Japanese ZIP filenames become unreadable
Older Windows programs sometimes stored Japanese names in CP932, the Windows variant of Shift-JIS, without a reliable encoding label. A tool that reads those bytes as UTF-8 may display broken names. Start with the original ZIP so you can compare its filename bytes before you save anything.
Choose a source
- Open a ZIP
- Compare the names in an archive. Choose a reading for the whole archive or for individual entries, then extract selected files or create a new ZIP with UTF-8 names.
- Paste names
- Paste garbled names, one per line, to compare possible readings and copy a readable result.
- Use filenames
- Select already extracted files to examine the names on your device. Choose up to 32 files at once. The tool uses their names to suggest corrections without reading the contents.
What can be recovered?
Compare CP932 and UTF-8 and select a name you recognize. A readable name is a candidate, not a guarantee. If a filename was already saved with missing characters, ask the sender for the original ZIP. The tool does not repair document contents or read EUC-JP or ISO-2022-JP names.
For other encodings on Windows, see how to fix garbled archive filenames on Windows.
Browser limits and privacy
In ZIP mode, inputs may be up to 16 MiB each and 32 MiB in total. An archive can contain up to 512 entries, with a folder depth of 16, an expansion ratio up to 200×, and a processing limit of 60 seconds. Processing stops if a limit is exceeded.
Filenames, archive contents and pasted text stay in your browser. The bytes sent counter refers to your file data. Password-protected archives and split archives require a desktop extractor.
Frequently asked questions
Does the tool upload filenames or files?
No. Original names, pasted text and file contents are processed locally in your browser.
Can it fix garbled text inside a document?
No. This tool changes how ZIP filenames are read. It does not change text or other data inside your files.
Can I save a ZIP with the corrected filenames?
Yes. Select the entries you want to keep, then create a new ZIP with their names in UTF-8. The original ZIP stays intact.
What if neither reading looks right?
Leave the entry unselected and check with the sender for the original filename or archive. The tool supports CP932 and UTF-8 and cannot reconstruct bytes the archive no longer contains.
What does the name list contain?
Export the selected entries to save their original and chosen names side by side in a text file. You do not need to extract the archive.