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Firefox new scaling options made my screen larger and icons too big


The new scaling option has made my icons on my roomy icons text bar icons so large they run off the screen - they were perfect before

Additional System Details

Installed Plug-ins

  • Google Update
  • Next Generation Java Plug-in 10.25.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Roblox Launcher Plugin
  • Shockwave Flash 11.7 r700
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.7
  • iTunes Detector Plug-in
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.02
  • Catalina Savings Printer
  • 5.1.20125.0
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Coupons, Inc. Coupon Printer Plugin
  • Unity Player 3.5.0f6
  • GEPlugin
  • - The WorldWinner plug-in allows you to enjoy online casual games with the thrill of playing for cash and prizes
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers


  • Firefox 22.0
  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0
  • Support URL: http://support.mozilla.org/1/firefox/22.0/WINNT/en-US/


  • AniWeather 0.8.37 ({4176DFF4-4698-11DE-BEEB-45DA55D89593})
  • Classic Toolbar Buttons 1.2.7 (CSTBB@NArisT2_Noia4dev)
  • CouponsHelper 1.1.8 ({239cc760-75a9-4276-b1fc-c0ceb963f373})
  • Download Manager Tweak 0.9.8 ({F8A55C97-3DB6-4961-A81D-0DE0080E53CB})
  • NoSquint 2.1.9 (nosquint@urandom.ca)
  • Open With Photoshop 4.6 ({f3f219f9-cbce-467e-b8fe-6e076d29665c})
  • Pinterest Pin Button 0.5 ({677a8f98-fd64-40b0-a883-b8c95d0cbf17})
  • Print Edit 9.3 (printedit@DW-dev)
  • RoboForm Toolbar for Firefox ({22119944-ED35-4ab1-910B-E619EA06A115})
  • Roomy Bookmarks Toolbar 1.4.2 (ALone-live@ya.ru)
  • ScrapBook 1.5.6 ({53A03D43-5363-4669-8190-99061B2DEBA5})
  • ShareThis 4.0.1 ({1b8cc170-8c85-11db-b606-0800200c9a66})
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • Undo Closed Tabs Button 3.7.3 (undoclosedtabsbutton@supernova00.biz)
  • Adobe Acrobat - Create PDF 1.2 (web2pdfextension@web2pdf.adobedotcom) (Inactive)
  • Adobe Contribute Toolbar 6.0 ({01A8CA0A-4C96-465b-A49B-65C46FAD54F9}) (Inactive)
  • Anti-Banner (KavAntiBanner@Kaspersky.ru) (Inactive)
  • Kaspersky URL Advisor (linkfilter@kaspersky.ru) (Inactive)
  • Kaspersky Virtual Keyboard (virtualKeyboard@kaspersky.ru) (Inactive)


  • incrementalGCEnabled: True


  • adapterDescription: NVIDIA GeForce GT 540M
  • adapterDescription2:
  • adapterDeviceID: 0x0df4
  • adapterDeviceID2:
  • adapterDrivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
  • adapterDrivers2:
  • adapterRAM: 1024
  • adapterRAM2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 6.2.9200.16492
  • driverDate: 12-11-2010
  • driverDate2:
  • driverVersion:
  • driverVersion2:
  • info: {u'AzureCanvasBackend': u'direct2d', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'direct2d'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • webglRenderer: Google Inc. -- ANGLE (NVIDIA GeForce GT 540M)
  • windowLayerManagerType: Direct3D 10

Modified Preferences

  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 1024
  • browser.cache.disk.smart_size.enabled: False
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 358400
  • browser.places.smartBookmarksVersion: 4
  • browser.startup.homepage: www.ireli.com
  • browser.startup.homepage_override.buildID: 20130618035212
  • browser.startup.homepage_override.mstone: 22.0
  • browser.tabs.onTop: False
  • browser.zoom.siteSpecific: False
  • dom.mozApps.used: True
  • dom.w3c_touch_events.expose: True
  • extensions.lastAppVersion: 22.0
  • font.internaluseonly.changed: True
  • gfx.direct3d.last_used_feature_level_idx: 0
  • gfx.direct3d.prefer_10_1: True
  • keyword.URL:
  • mousewheel.withcontrolkey.action: 3
  • network.cookie.prefsMigrated: True
  • places.database.lastMaintenance: 1372885871
  • places.history.expiration.transient_current_max_pages: 104858
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • plugin.importedState: True
  • plugin.state.npwebsllauncher: 0
  • privacy.cpd.cookies: False
  • privacy.cpd.formdata: False
  • privacy.cpd.sessions: False
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True
  • privacy.sanitize.timeSpan: 0
  • storage.vacuum.last.index: 1
  • storage.vacuum.last.places.sqlite: 1370396913


  • User JS: Yes
  • Accessibility: Yes
  • Top 25 Contributor
529 solutions 5045 answers

Helpful Reply


Firefox on Windows is now following display scaling options which may render text larger on high resolution displays. You can adjust your screen resolution. To modify it do the following:

  • Type about:config into the Firefox address bar and tap on the Enter key.
  • If the warning This might void your warranty appears, click I'll be careful, I promise.
  • Search for layout.css.devPixelsPerPx


  • Double-click on layout.css.devPixelsPerPx to modify its value. The default is -1.0 in Firefox 22 and above. Change it to 1.0 to make it work like in previous Firefox versions.

If necessary, further adjust the value in 0.1 or 0.05 steps. Use values between 1.0 and about 0.5 to reduce elements in size. Use values greater than 1.0 to increase size. For example, a value of 1.25 will increase font size to 125% to accommodate the default DPI setting in Windows 8. Double check the value that you enter. Setting a too small value will make everything disappear and a too large value will blow things up.

If web pages still need to be adjusted then you can look at the Default FullZoom Level or NoSquint extension.

To adjust the font size for the user interface, you can use the Theme Font & Size Changer extension.

Did this fix your problems? Please report back to us!

Thank you.

Artilyn 0 solutions 1 answers

This does not work. I have tried everything, and each time I close and reopen Firefox, my screen is back to the swollen version. I don't want to have to change the size of every website I open. Please tell me how to make the screen the same size it was before this "update" occurred. (I will never understand why so-called updates are made without a way for people to keep the settings they like!)

Modified by Artilyn

marv6 0 solutions 53 answers

Helpful Reply

My problems are the same a Artilyn's. In trying to fix something Firefox has broken things for me. You say we should update to ver 22.0, but, it does not work as good as the previous versions. This is step backwards, not forward.

marv6 0 solutions 53 answers

layout.css.devPixelsPerPx helps some, but my homepage and webmail pages are still too large for comfort. When I make them smaller then the bookmarks list, the top of the page, etc get too small. Cannot get a happy medium!!!

  • Top 25 Contributor
529 solutions 5045 answers

You will have a happy medium after reading this.