A+ FontSize Changer users statistics

Extension that lets the user change the font text size, font type, font color and background color on a page.

A+ FontSize Changer is a Chrome Extension and Edge Chromium add-on that lets the user customize the font text size, font text color, background color and font family on a page. It actually changes the fontSize of each element unlike Chrome's action with CTRL+ and CTRL- which zooms the page. Sometimes you wish to increase the text size without zooming the page so that paragraphs do not scroll past the edge of the screen.

A+ FontSize Changer works where others fail! Even on pages with dynamic (ajax) content! Even on pages with iFrames! Just use the buttons to change the fontsize or use keyboard shortcuts ALT+ and ALT- ( or use ALT+Up Arrow and ALT+Down Arrow. You can change these hotkeys at chrome://extensions/shortcuts )

Some website authors use a gray text color instead of black which can be hard on the eyes. With A+ FontSize Changer you can also change the text color and background color on a page. With this feature you can also create your own custom Night Mode where you choose the text color and background color yourself and it does not invert image or video colors so that they are still viewable.

NOTES:

If ALT+ and ALT- are not working on a website then try these steps:

1. Reload the website (F5 key) or restart Chrome or Edge.
2. Click on a blank space on the website page before using the ALT+ or ALT- key.
3. Extensions are not allowed to work at Chrome Web Store, Edge Add-ons store or a chrome:// or edge:// page or the new tab page. The extension popup will display a red notice with "NOTE:" if you are on one of those pages.
4. If the website has disabled keyboard keys then click on the extension icon in the toolbar and use the buttons there.
5. If ALT+Up Arrow and ALT+Down Arrow are not working then see if they are active on the extension at chrome://extensions/shortcuts

FREE FEATURES:

• Change font type for the current webpage
• Change text size for the current webpage
• Change text color for the current webpage
• Change background color for the current webpage

PRO FEATURES (IN-APP PURCHASE):

• Create profiles to save text settings and color schemes.
• Saves custom font type for each website you visit
• Saves custom text size for each website you visit
• Saves custom text color for each website you visit
• Saves custom background color for each website you visit

VERSION HISTORY

1/11/2026 - Version 1.5.4

• Some Youtube captions were sometimes displaying at default text size instead of the size set by the extension. Fixed!

7/25/2025 - Version 1.5.3

• New payment processor

8/23/2024 - Version 1.5.2

• Better support for Opera browser.
• Extension popup now tells the user if the current website needs to be reloaded.

12/25/2022 - Version 1.5.1

• Added "Blacklist" for locked profiles so that users can add websites that will not be changed by the profile that is checked.
• Grammar correction: from "it's" to "its".
• Fixed bug of font-family not loading a profile with "Load" button until page was reloaded.

8/20/2022 - Version 1.5.0

• Updated to Manifest V3
• Checked (or locked) profiles no longer save the values to each website so that you can uncheck the profile and those websites will default to normal.

8/19/2022 - Version 1.4.9

• Performance improvements
• Extension badge now displays if the user has changed the font color, background-color, font-family or as usual the font-size multiplier for a website.

1/10/2022 - Version 1.4.8 - Corrected some German spelling.

1/10/2022 - Version 1.4.7 - Added Portuguese language. (Português)

1/6/2022 - Version 1.4.6 - Added Chinese Traditional (zh-TW) and Chinese Simplified (zh-CN).

9/7/2021 - Version 1.4.4 - Fixed some license issues. No longer puts gray translucent background under Youtube video controls.

4/7/2021 - Version 1.4.3 - Cosmetic changes. Changed buttons and input fields to use font-family: Consolas, monospace. Changed footer background color. Added German language.

4/7/2021 - Version 1.4.3 - Cosmetic changes. Changed buttons and input fields to use font-family: Consolas, monospace. Changed footer background color. Added German language.

3/4/2021 - Version 1.4.2 - Now displays a notice if the user did not allow the extension to use the user's email address to check for license status from servers. Hopefully fixed it so that text size does not get larger than set size on some websites on page refresh because of slow loading external stylesheets or dynamic content. It will not work in all cases, otherwise the extension would have to be delayed for 10 seconds or more on some websites with many external resources.

2/16/2021 - Version 1.4.1 - Fixed a bug where the extension would not work when first installed on websites that were already open in the browser. Now it will work on a fresh install without refreshing the page. Also added better support for Edge Chromium browsers.

2/11/2021 - Version 1.4.0 - Fixed a bug in the license status check. It will now display an error message if the user did not approve access for the extension to check license status or if the user is not signed into Chrome and therefore the license status cannot be checked.

2/10/2021 - Version 1.3.9 - Fixed a bug from version 1.3.7 where backgrounds with url images with partial transparency would get a partial transparent background so that some video players like jw-player would not get the video blocked out. But the fix was being applied to the body tag as well. Fixed so that the body tag will always get a solid color and no transparency. Also added more error checking to license status check.…