Zip Cruncher ads: what it is and how to remove it

Zip Cruncher is the allegedly helpful application developed by Meme Ltd. and serves as a file extractor and compressor.

Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.

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Screenshot of Zip Cruncher: virus
Zip Cruncher as our 2019 report showed it.

Zip Cruncher ads: summary

DistributionFreeware installations, deceptive websites
NameZip Cruncher
TypeAdware
DeveloperMeme Ltd.
CategoryPotentially unwanted program
RelatedGo.zipcruncher.com
Removal

Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged.

Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free.
Show 9 more facts
SymptomsDelivers pop-up ads, causes redirects
Detection namesNo Microsoft detection name is known
DamageNot recorded in the old report
Evidence5 write-ups by security sites; details still limited
Domainsbaseapp.zipcruncher.com
Ads shown asRedirects through ad pages
BrowsersChrome, Edge and Firefox
First seen14 January 2019
Facts checked6 October 2026

Is Zip Cruncher ads dangerous?

From our report of Jan 2019 · not reviewed since

Zip Cruncher is a file compressor and a potentially unwanted program that gets into systems together with freeware or shareware

Zip Cruncher is the allegedly helpful application developed by Meme Ltd. and serves as a file extractor and compressor.

Publishers offer the program on their official website and Chrome web store, but it mostly ends up in users' PCs with the help of software bundling - a deceptive marketing campaign. Therefore, users mostly do not notice the infiltration of zipCruncher.

However, the presence of the PUP can be noticed straight away, as Google Chrome, Mozilla Firefox, Internet Explorer, Safari or other browser starts displaying intrusive advertisements in the form of pop-ups, banners, in-text links, sponsored links, and similar. The advertisement is annoying and unnecessary, and it can also bring users to malicious websites.

Finally, the app, which spreads as a web browser extension, does not even functions properly, as its Browser Files feature does not allow to upload anything. Thus, Zip Cruncher will not only spam you with unwanted ads as most adware-type programs do, but will also not bring any use whatsoever. If you want to zip or unzip files, you should trust reputable software like 7-Zip or WinRar.

According to reports, Zip Cruncher can be added as an extension to web browsers, and redirect to baseapp.zipcruncher.com/#!/. This is where users are meant to upload files to compress them, although this feature simply does not work.

Additionally, ZipCruncher PUP possesses browser hijacking capabilities, as it redirects users to Go.zipcruncher.com each time they want to browse the web. The search results are then displayed by Yahoo - a legitimate search engine, although due to rerouting practices, the sponsored links litter search results.

Since Zip Cruncher virus is a potentially unwanted program, it is responsible for the frustration that people tend to complain about the most. Users get annoyed by constant redirects and suspicious pages appearing out of nowhere. Also, commercial content in the form of banners, pop-up ads injected to commonly visited sites keeps them from finding relative information quickly.

Zip Cruncher software uses a pay-per-click scheme which provides profits for Meme Ltd., which explains the intrusive ad behavior. Unfortunately, users do not get any benefit from this useless program, making Zip Cruncher removal a necessary task.

Unfortunately, it is not enough to uninstall Zip Cruncher and call it a day. You need to remove all related programs or even files to get rid of this intruder completely. Researchers note that professional help is required when you are dealing with this type of infections because PUPs can install additional content without your permission.

People often think that Zip Cruncher is safe, but this is not the case. Even though it may sound like a useful tool that compresses your files in one click this program displays tons of advertisements no matter if you want to see them or not.

While searching for genuine Zip Cruncher reviews, we discovered a few facts about this PUP. One of the most common complaints is the difficulty to uninstall the program manually. Also, when commercial content gets to your screen, you can see these indications on every advertisement:

If you wonder how to remove Zip Cruncher, we can give one recommendation - a reputable antivirus program. This is the best method to eliminate similar unwanted programs that can modify browser settings and cannot be easily uninstalled.

  • Powered by Zip Cruncher,
  • Advertisements by Zip Cruncher,
  • Brought to you by Zip Cruncher,
  • Ads by Zip Cruncher;
  • Ads powered by Zip Cruncher.
Screenshot of Zip Cruncher: virus
Zip Cruncher in our 2019 report.
Screenshot of Zip Cruncher: adware
Zip Cruncher in our 2019 report.

From our report of Jan 2019 · not reviewed since

Deceptive tools and free programs come from software bundles

Software bundling is technique mostly used to distribute potentially unwanted programs like browser hijackers, adware and rogue tools.

The software programs with semi-useful features often can be downloaded from the official websites or deceptive pages but also come packed with freeware.

Software providers and PUP developers bundle their products together so it can be distributed all over the internet. Users tend to skip through important installation steps, and this way potentially unwanted programs get distributed. If you want to avoid these infiltrations, make sure to choose Advanced or Custom options when installing applications or updates.

Only this way you can see and de-select unwanted content from the download list or directly on the installation wizard. Getting your programs from the internet is always risky unless you choose the official provider of the software as the primary source.

Zip Cruncher: adware with browser hijacking capabilities
Zip Cruncher in our 2019 report.

From our report of Jan 2019 · not reviewed since

More from our earlier report on Zip Cruncher

  • Clean the system using and remove Zip Cruncher

Check your browser and PC

  • Address: baseapp.zipcruncher.com

How to remove Zip Cruncher ads

How to remove the Zip Cruncher extension

Do the browser steps in every browser and profile on the PC, then check Windows for the program that installed the extension.

  1. Step 1: Remove extensions you did not add

    Zip Cruncher often works through an extension, so go through the extension list of each browser:

    • chrome://extensions
    • edge://extensions
    • Extensions and themes in Firefox

    Switch suspicious extensions off one at a time and reload the page where the problem shows, then remove the one that stops it, and any other you did not add.

    Remember the other browsers and profiles on the PC. If Remove is missing or greyed out, a policy forces the extension, which the policy step deals with. Windows 11 and Windows 10 show the same pages.

    Chrome menu with Extensions and Manage extensions highlighted
    Chrome on Windows 11: More > Extensions > Manage extensions.

    Full procedure with screenshots: Remove a browser extension

  2. Step 2: Uninstall programs you did not mean to install

    Open Settings > Apps > Installed apps in Windows 11, or Settings > Apps > Apps & features in Windows 10, and sort the list by install date. Look at what appeared around the day the problem started and uninstall every program you do not recognise or did not choose.

    Free converters, PDF and video tools, "system optimizers" and unknown browsers are the usual carriers of Zip Cruncher. If a name is unclear, search for it before you remove it, so you do not uninstall a driver or a Windows component.

    Full procedure with screenshots: Uninstall a program or app in Windows On uGetFix

  3. Step 3: Reset the browser

    Finish the browser part with a reset, which puts the search engine, start page, new tab page and site permissions back to their defaults and switches extensions off. Chrome: Settings > Reset settings > Restore settings to their original defaults.

    Edge: Settings > Reset settings. Firefox: Help > More troubleshooting information > Refresh Firefox, which also removes its extensions. Your bookmarks and saved passwords are kept, and the menus are the same on Windows 11 and Windows 10.

    Chrome Settings page with the Reset settings section open
    Chrome on Windows 11: Settings > Reset settings.

    Full procedure with screenshots: Reset a browser and fix a hijacked search engine

  4. Step 4: Scan the PC, then run the offline scan

    Open Windows Security > Virus & threat protection > Scan options, run a Full scan and remove everything it finds. Then select Microsoft Defender Antivirus (offline scan) and click Scan now: the PC restarts and scans before Windows loads, which finds files that hide while Windows runs.

    Save your work first, because the offline scan takes about 15 minutes. Both scans are built into Windows 11 and Windows 10, and a second scanner from another vendor is a useful extra opinion.

    Windows Security Scan options with Microsoft Defender Antivirus offline scan selected
    Windows 11: Windows Security > Virus & threat protection > Scan options.

    Full procedure with screenshots: Run a Microsoft Defender Offline scan

Instructions for each browser and system

The detailed steps for every browser and system this guide covers. Open the one you use.

Uninstall from Windows

Get rid of Zip Cruncher app from your device immediately:

Uninstall from Windows 10/8:

  1. Type Control Panel into the Windows search box and open the result.
  2. Under Programs, select Uninstall a program.Uninstall from Windows 10/8

Uninstall from Windows 7/XP:

  1. Click on Windows Start > Control Panel (Windows XP users should click on Add/Remove Programs).
  2. In Control Panel, select Programs > Uninstall a program.Uninstall from Windows 7/XP

Remove the unwanted program:

  1. In the Programs and Features window, look for any recently installed suspicious entries, select them, and click Uninstall.
  2. If User Account Control appears, click Yes to confirm, then complete the removal.Uninstall the unwanted program from Windows
Remove from Google Chrome

Make sure to check the browser for unwanted content or suspicious changes:

Delete malicious extensions from Google Chrome:

  1. Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
  2. In the newly opened window, you will see all the installed extensions. Uninstall all suspicious extensions related to the unwanted program by clicking Remove.Remove extensions from Chrome

Clear cache and web data from Chrome:

  1. Click on Menu and pick Settings.
  2. Under Privacy and security, select Clear browsing data.
  3. Select Browsing history, Cookies and other site data, as well as Cached images and files.
  4. Click Clear data.Clear cache and web data from Chrome

Change your homepage:

  1. Click menu and choose Settings.
  2. Look for a suspicious site in the On startup section.
  3. Click on Open a specific or set of pages and click on three dots to find the Remove option.

Reset Google Chrome:

If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:

  1. Click on Menu and select Settings.
  2. In the Settings, scroll down and click Advanced.
  3. Scroll down and locate Reset and clean up section.
  4. Now click Restore settings to their original defaults.
  5. Confirm with Reset settings.Reset Chrome 2
Remove from Microsoft Edge

Delete unwanted extensions from MS Edge:

  1. Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
  2. From the list, pick the extension and click on the Gear icon.
  3. Click Remove.Remove extensions from Edge

Clear cookies and other browser data:

  1. Click on the Menu (three horizontal dots at the top-right of the browser window) and select Settings > Privacy, search, and services..
  2. Under Clear browsing data, pick Choose what to clear.
  3. Select Cookies and other site data and Cached images and files. (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.Clear Edge browsing data

Restore new tab and homepage settings:

  1. Click the menu icon and choose Settings.
  2. Then find On startup section.
  3. Click Remove next to any suspicious startup page.

Reset MS Edge if the above steps did not work:

  1. Press on Ctrl + Shift + Esc to open Task Manager.
  2. Click on More details arrow at the bottom of the window.
  3. Select Details tab.
  4. Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.Reset MS Edge
Instructions for Chromium-based Edge

Delete extensions from MS Edge (Chromium):

  1. Open Edge and click select Settings > Extensions.
  2. Delete unwanted extensions by clicking Remove.Remove extensions from Chromium Edge

Clear cache and site data:

  1. Click on Menu and go to Settings.
  2. Select Privacy, search and services.
  3. Under Clear browsing data, pick Choose what to clear.
  4. Under Time range, pick All time.
  5. Select Clear now.Clear browser data from Chroum Edge

Reset Chromium-based MS Edge:

  1. Click on Menu and select Settings.
  2. On the left side, pick Reset settings.
  3. Select Restore settings to their default values.
  4. Confirm with Reset.
  5. This will disable extensions and reset startup pages but will not delete bookmarks, saved passwords, or browsing history.Reset Chromium Edge
Remove from Mozilla Firefox (FF)

You need to remove Zip Cruncher itself and all related files to make sure that PC is not affected further. That includes your browsers too:

Remove dangerous extensions:

  1. Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
  2. Select Add-ons.
  3. In here, select the unwanted extension and click Remove.Remove extensions from Firefox

Reset the homepage:

  1. Click three horizontal lines at the top right corner to open the menu.
  2. Choose Settings.
  3. Under Home, set your preferred homepage and new tab settings.

Clear cookies and site data:

  1. Click Menu and pick Settings.
  2. Go to Privacy & Security section.
  3. Scroll down to locate Cookies and Site Data.
  4. Click on Clear Data...
  5. Select Cookies and Site Data and Temporary cached files and pages, then click Clear.Clear cookies and site data from Firefox

Reset Mozilla Firefox

If clearing the browser as explained above did not help, reset Mozilla Firefox:

  1. Open Mozilla Firefox browser and click the Menu.
  2. Go to Help and then choose Troubleshooting Information.Reset Firefox 1
  3. Under Give Firefox a tune up section, click on Refresh Firefox...
  4. Once the pop-up shows up, confirm the action by pressing on Refresh Firefox.Reset Firefox 2
Delete from Safari

Remove dangerous extensions:

  1. Open Safari, click Safari in the menu at the top-left of the screen, and select Preferences.
  2. Go to the Extensions tab, look for any suspicious entries, and click Uninstall to remove them.Remove extensions from Safari

Clear history and website data:

  1. Click Safari in the menu and pick Clear History.
  2. Set Clear to all history and confirm with Clear History.Clear history from Safari

Reset Safari:

  1. Click Safari in the menu and select Preferences > Advanced.
  2. Enable Show Develop menu in menu bar.
  3. From the menu bar, click Develop and select Empty Caches.Reset Safari
Delete from macOS

Remove the unwanted application:

  1. From the menu bar, select Go > Applications.
  2. In the Applications folder, look for any suspicious entries, then drag them to Trash (or right-click and pick Move to Trash).Uninstall from Mac

Delete leftover files and folders:

  1. Select Go > Go to Folder.
  2. Enter /Library/Application Support and remove any suspicious folders related to the unwanted program.
  3. Repeat the same check in the /Library/LaunchAgents and /Library/LaunchDaemons folders, deleting any suspicious entries.Delete leftover files from Mac
  4. Finally, empty the Trash to permanently remove the leftovers.
Reset Internet Explorer

Remove dangerous add-ons:

  1. Open Internet Explorer, click on the Gear icon (IE menu) on the top-right corner of the browser
  2. Pick Manage Add-ons.
  3. You will see a Manage Add-ons window. Here, look for suspicious plugins. Click on these entries and select Disable.Remove add-ons from Internet Explorer

Change your homepage if it was altered:

  1. Open IE and click on the Gear icon.
  2. Select Internet Options.
  3. In the General tab, delete the Home page address and replace it by your preferred one (for example, Google.com).
  4. Click Apply and then select OK.Reset IE homepage

Delete temporary files:

  1. Press on the Gear icon and select Internet Options.
  2. Under Browsing history, click Delete...
  3. Select relevant fields and press Delete.Clear temporary files from Internet Explorer

Reset Internet Explorer:

  1. Click on Gear icon > Internet options and select Advanced tab.
  2. Select Reset.
  3. In the new window, check Delete personal settings and select Reset.Reset Internet Explorer

Choose a proper web browser and improve your safety with a VPN tool

Online spying has got momentum in recent years and people are getting more and more interested in how to protect their privacy online.

One of the basic means to add a layer of security - choose the most private and secure web browser. Although web browsers can't grant full privacy protection and security, some of them are much better at sandboxing, HTTPS upgrading, active content blocking, tracking blocking, phishing protection, and similar privacy-oriented features.

However, if you want true anonymity, we suggest you employ a powerful VPN - it can encrypt all the traffic that comes and goes out of your computer, preventing tracking completely.

Lost your files? Use data recovery software

While some files located on any computer are replaceable or useless, others can be extremely valuable.

Family photos, work documents, school projects - these are types of files that we don't want to lose. Unfortunately, there are many ways how unexpected data loss can occur:

  • power cuts
  • Blue Screen of Death errors
  • hardware failures
  • crypto-malware attack
  • even accidental deletion

To ensure that all the files remain intact, you should prepare regular data backups. You can choose cloud-based or physical copies you could restore from later in case of a disaster. If your backups were lost as well or you never bothered to prepare any, can be your only hope to retrieve your invaluable files.

From our report of Jan 2019 · not reviewed since

Eliminate Zip Cruncher and all the other potentially unwanted programs

When it comes to Zip Cruncher virus or any similar program that falls into the potentially unwanted program category, the main solution is a thorough system clean during which you can delete all potential threats, unwanted programs, corrupted files, and applications.

When scanning the system with antivirus tools, you can remove Zip Cruncher, improve the overall performance of your computer and make sure that there are no cyber threats on the system. Occasional system scan helps you avoid similar infections in the future.

When choosing the anti-malware tool for Zip Cruncher removal make sure to opt for the reliable and trustworthy program. You can use programs that we suggest or employ anti-malware of your choice.

Questions about Zip Cruncher ads

How do I stop baseapp.zipcruncher.com from opening?

Find and remove whatever opens it. Start with the browser's extensions page and remove anything you do not remember adding. Next, open the notification settings and take away permission from sites you do not recognise.

Then check Settings > Apps > Installed apps for programs added around the day the redirects began, and uninstall those. Restart the browser and test a few links after each step.

If baseapp.zipcruncher.com still appears, reset the browser, which restores the default search engine, start page and permissions without deleting bookmarks or saved passwords. Redirects that survive a reset in every browser point to a program in Windows, and a full scan is the next step.

Should I worry about redirects to baseapp.zipcruncher.com?

Worry less about baseapp.zipcruncher.com itself and more about what keeps sending you there. A single redirect from a free streaming or download site is normal and harmless once the tab is closed.

Repeated redirects on sites that used to work fine mean something in the browser or in Windows changed, often an extension or program installed alongside other software. It may also collect the pages you visit. Remove the cause with the steps in this guide, and do not act on anything the redirected pages ask:

  • no Allow clicks
  • no downloads
  • no calls

If you already did one of those, the matching section of this guide explains what to do next.

What is Zip Cruncher?

Zip Cruncher is an adware extension, a kind of adware. It earns money by showing redirects through ad pages, and each view, click or redirect pays whoever runs it. It is not something people usually choose; it arrives through a free download, a fake button or a misleading prompt.

Zip Cruncher does not encrypt files or take control of Windows, but its ads are sold to anyone, including scam operators, so they can lead to fake virus warnings and unwanted downloads. The steps in this guide remove it from Windows and from each browser.

Which browsers does Zip Cruncher affect?

In the cases we checked, Zip Cruncher showed up in Chrome, Edge and Firefox. That does not rule out others on your PC, since adware installers often target every browser they find, and permissions and extensions sync across computers signed in to the same browser account.

Open each browser you have, go to its extensions page and its notification settings, and remove anything you do not recognise. Profiles count separately: Chrome and Edge can each hold several, and each one needs checking on its own.

Are the pop-ups I see really from Zip Cruncher?

Compare them with the details in the table above. Zip Cruncher produces redirects through ad pages, and the clearest sign of it is redirects to baseapp.zipcruncher.com. Other adware looks similar, so check the name of the sending site at the bottom of a notification, the address in the tab that opened, or the newest entries on the extensions page.

If those match, this guide fits. If you see a different name, the same kind of steps apply, but remove the item you actually find rather than guessing.

Why is my browser so slow since the ads started?

Each page now does extra work. An adware extension reads the page, decides where to put ads, loads them from ad servers and reports your visit, and that happens on every tab. Ad-supported programs add their own background activity.

Removing the extension or program usually makes the browser fast again at once. If it stays slow, open the browser's own task manager with Shift+Esc in Chrome or Edge and look for extensions using a lot of memory or processor time.

I let a "support technician" from an ad connect to my PC. What should I do?

Act quickly but calmly. Disconnect the PC from the internet first, so the connection ends. Uninstall the remote access tool they asked you to install and check Installed apps for anything else added during the call.

Run a Microsoft Defender full scan and offline scan. From another device, change your e-mail and banking passwords and sign out of all sessions.

If you paid by card, bank transfer or gift card, contact your bank or the card issuer immediately, and report the scam to the police. Do not answer if they call back.

Can an adware pop-up infect my PC just by appearing?

No. A pop-up, a notification or a new tab is only a web page or a message. It cannot run programs on Windows by itself, provided the browser and Windows are up to date. Infection needs a step from you:

  • running a downloaded file
  • installing an extension
  • giving a stranger remote access

That is why scam pages work so hard to make you click. Close such pages with the tab's X or by closing the browser, not with buttons inside the page, which may start a download.

Did Zip Cruncher collect my data?

Adware typically collects what it needs to choose ads:

  • the sites you visit
  • search terms
  • approximate location
  • browser and system details

Extensions with permission to read and change data on all websites can technically see everything on those pages, including forms. That is a privacy problem rather than proof of theft.

If you typed card details or passwords while it was active, changing the most important passwords is a reasonable precaution. Clearing cookies after removal ends the tracking sessions it may have started.

Will Fortect remove Zip Cruncher?

Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.

For Zip Cruncher, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.

Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.

Sources

  1. Wikipedia: Pay-per-click (read October 6, 2026)
  2. Virukset: Virukset (read October 6, 2026)
  3. Moneysavingexpert: uninstalling a stubborn program (read October 6, 2026)
  4. Google Chrome Help: Use notifications to get alerts (no longer online) (read October 6, 2026)
  5. FTC: How to recognize, remove and avoid malware (read October 6, 2026)

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