Read on your device
The archive is opened by a worker in your browser, so a private set of documents does not go to a stranger's server to be unpacked.
Unzip a ZIP file
Open a ZIP file in your browser and save the files inside it one by one. The archive is read on your device and never uploaded, and unsafe archives are refused.
Drop your ZIP file here or click to choose a file ZIP file · processed on this device
Opening your ZIP…
Your files are ready
Open an archive without handing it over
A ZIP arrives as one file and hides what is inside it. Most computers open one with a double click, but not every phone or locked-down work laptop does, and a ZIP received from someone you do not know is worth a look before it is unpacked next to your other files. This page opens the archive in your browser and lists what it holds.
Choose the ZIP and press Open. Each file appears with its path and size and a Save button of its own. Save only what you want. Nothing is written to your device until you press Save, so looking inside costs you nothing.
Archives that are refused
An archive can be built to be small and to unpack into something enormous, a decompression bomb. A few kilobytes of ZIP can claim hundreds of gigabytes. Before any file is inflated, the tool reads the directory and stops if the total would pass 512 MB or if the archive would expand by more than a thousand times. It counts every entry, including ones you would not have saved, so a hostile archive cannot hide its size in parts you never looked at.
It also refuses an archive that holds an entry whose path goes up out of the archive, such as ../../file, or starts at a root or a drive letter. These paths are how a hostile archive tries to overwrite files outside the folder it was opened in. Here nothing is written to disk by path, since each file downloads under its own name, but an archive built like that is a warning, and the tool says so.
What it does not do
It opens ZIP files only. RAR, 7z and TAR archives need other software. It cannot open a ZIP protected by a password, and it will say that the archive could not be opened rather than list blank files. An archive with more than 500 files lists the first 500 and says how many more there were, because a list longer than that is not one a person can use and every file in it holds its bytes in memory. A name that repeats is kept each time and numbered, up to 100 repeats.
Names
Files are shown with their path inside the archive and download under their file name alone. If two files in different folders share a name, save one, then the other, and rename the first before saving the second, because the browser adds its own number.
Nothing leaves the device
The archive is read in your browser and unpacked by a local worker. There is no account, no queue on a server and no copy kept anywhere else. Closing the tab discards the unpacked files.
To pack files together instead, use Zip files.
Unzip a file in three steps
- 1
Choose a ZIP file
- 2
Open it to list what is inside
- 3
Save the files you need
Everything you need
Unsafe archives refused
The tool stops at 512 MB unpacked, at a ratio above 1,000 to 1, and at any entry whose path escapes the archive.
Save what you need
Every file is listed with its size and its own Save button, so you do not have to unpack a large archive to reach one file in it.
Nothing is uploaded, and you can verify it
Processing runs on this device. Open the browser’s Network panel while the tool works and you will see no file upload request to FileGizmo. Temporary previews use local browser URLs, and closing or resetting the page releases them instead of leaving a server copy behind.
No limits, no watermarks
Use the tool without a daily task counter, account wall, output watermark, or artificial upload cap. FileGizmo does not meter a transfer it never receives. Available memory, processor speed, browser canvas limits, and the file format itself set the practical limit.
Works on any device, and offline after first load
Use a current browser on desktop, Android, iPhone, or iPad without installing an app. Once this tool and its required assets load, the cached workflow works without a connection. Large jobs are usually more comfortable on a desktop with additional memory.
Frequently asked questions
Is my ZIP file uploaded to be opened?
No. A worker in your browser reads the archive on your device. Neither the ZIP nor the files inside it are sent to FileGizmo or to any other service.
Why did it refuse my archive?
Some archives are built to unpack into far more data than they hold, so the tool stops at 512 MB of unpacked data or a ratio above 1,000 to 1. It also refuses an entry whose path climbs out of the archive with two dots, which is how a hostile archive tries to write over other files.
Can it open a ZIP with a password?
No. A password-protected ZIP cannot be opened here, and the tool says so instead of showing empty files. Open it with the program that was used to protect it.
Can it open RAR, 7z or TAR files?
No. Only ZIP files are supported. Other archive formats need a program built for them.
Why are folders not shown?
Files are listed with their full path, such as photos/2026/one.jpg, and can be saved one at a time. Empty folders hold nothing to save, so they are left out.
Related guides
Are online file converters safe? How to check whether a tool uploads your filesLearn how to tell whether an online converter uploads your file, inspect browser network activity, and evaluate privacy claims with evidence.Does using an online file converter make it a processor under GDPR?Uploading a document to an online converter usually discloses personal data to a third party. What that means for Article 28, Article 30 and transfers.