Adjust Opera Text and Image Size for Better Accessibility

Author: Ian C. Langtree - Writer/Editor for Disabled World (DW)
Published: 6 May 2009 - Updated: 23 Sep 2026
Publication Type: Instructive / Helpful

Table of Contents:
Synopsis - Definition - Overview - FAQs - Insights, Updates - Related Content

Synopsis

This guide provides practical technical instructions for customizing Opera browser's display settings to improve web accessibility. Written by a disability accessibility expert and editor, the content offers two distinct methods for adjusting text and image sizes: temporary zoom adjustments using keyboard shortcuts (plus and minus keys or Alt+V combinations) and permanent configuration changes through the browser's Tools and Preferences menus. The straightforward approach makes web content more readable for people with visual impairments, older adults experiencing age-related vision changes, and anyone who needs larger on-screen text. While the guide dates from 2009 with updates through 2013, the fundamental techniques remain relevant for users seeking browser-based accessibility solutions without requiring specialized assistive technology.

At a Glance

• 1 - Each press of the plus or minus key changes the size of web page text by 10 percent.
• 2 - Opera can resize fonts, images, and entire page sections together rather than enlarging text alone.
• 3 - Zoom changes made with keyboard shortcuts are not saved, so the page returns to its default size when a new Opera session starts.
• 4 - Setting a Page Zoom level in the Web pages tab of Preferences keeps your chosen size in place every time Opera opens, and the whole process can be completed using only the keyboard.

Topic Definition

Browser Page Zoom

Browser page zoom is a built-in feature of web browsers that scales everything on a web page, including text, images, and layout, by a set percentage so the content is larger or smaller on the screen. It is different from changing only the font size, because the whole page grows or shrinks together and its layout stays in proportion. People with low vision, older adults, and anyone who strains to read small print use page zoom as a simple, free accessibility tool. It works without extra software, and users can apply it to a single page for a moment or set it as a default for every site they visit.

Overview

One of the abilities of the Opera browser is a function to not only change the default text size of web pages but also increase image sizes by using the computer keyboard. Opera can resize all aspects of website pages, including font or text size, image sizes, and web page sections.

Instructions to increase the image and font size in Opera:

Press the "+" key, note that in some versions of the Opera browser you may have to also press the "Shift" key, to increase the text size and press the "-" to decrease font size. Each press of either key will increase or decrease the size of the web page text by 10%.

Another method of accomplishing this is to press "Alt" + "V" keys which will bring up the view menu, you can then press the "Z" key to bring up the Opera zoom functions and using the up and down arrow keys you can simply select the font size you require, to finish just press the "Enter" button.

Using the above method the changes to the text size options you made will NOT be remembered next time you open an Opera session. To have Opera use your font preferences each time you use it you will need to follow these instructions to semi-permanently increase or decrease the text size:

a) Click the "Tools" menu using your mouse then select "Preferences" from the menu or press "Ctrl ' and "F12" keys on your keyboard.

b) Click the "Web pages" tab with your mouse or select by pressing "Ctrl" and "Tab" keys until "Web pages" is highlighted.

c) Click the "Page Zoom" options box and select your text zoom size or press the "Tab" key twice to select the page zoom options, then use your up and down arrow keys to select the zoom level you require.

d) Finally click the "OK" button or press "Enter" to return to your Opera browser.

Changing Text Size in Other Web Browsers:

Frequently Asked Questions

How do I zoom in and out in current versions of Opera?

In current versions of Opera on Windows and Linux, press Ctrl and the plus key to zoom in and Ctrl and the minus key to zoom out. On a Mac, use the Command key instead of Ctrl.

How do I reset the zoom level in Opera back to normal?

Press Ctrl and 0 on Windows or Linux, or Command and 0 on a Mac, to return the page to its default 100 percent zoom level.

Can I zoom in Opera using my mouse?

Yes. Hold down the Ctrl key, or the Command key on a Mac, and scroll the mouse wheel up to zoom in or down to zoom out.

Where is the default page zoom setting in newer versions of Opera?

Open Settings, go to the Appearance section, and choose a level from the Page zoom menu. This level will apply to all websites unless you set a different zoom for a specific site.

Does Opera remember a zoom level for individual websites?

Yes. Modern versions of Opera save the zoom level you choose for each site, so a site you enlarged will open at that same size the next time you visit it.

What is the difference between page zoom and font size in Opera?

Page zoom enlarges the whole page, including images and layout, while the font size setting changes only the text. Font size is found under Appearance in Opera settings, where you can also customize font styles.

Is Opera compatible with screen readers and other assistive technology?

Opera works with common screen readers such as NVDA, JAWS, and VoiceOver, although some users find that support is smoother in other browsers. Testing your own setup is the best way to find what works for you.

What can I do if browser zoom is not enough for my vision needs?

Operating system tools such as Windows Magnifier, macOS Zoom, and high contrast modes can enlarge the entire screen. Many people with low vision combine these tools with browser zoom for the best results.

Insights, Analysis, and Developments

Editorial Note: Though modern browsers have evolved since this guide's publication, the principle behind Opera's zoom functionality - giving users direct control over how content appears on their screens - remains a cornerstone of web accessibility. Today's browsers offer even more sophisticated customization options, yet many users still don't know these features exist. The real value here isn't just in the specific keystrokes, but in the reminder that accessibility often starts with the tools already at our fingertips. Whether someone has low vision, experiences eye strain from prolonged screen time, or simply prefers larger text, taking five minutes to adjust browser settings can transform their daily internet experience from frustrating to functional.

Author Credentials: Ian is the founder and Editor-in-Chief of Disabled World, a leading resource for news and information on disability issues. With a global perspective shaped by years of travel and lived experience, Ian is a committed proponent of the Social Model of Disability, a transformative framework developed by disabled activists in the 1970s that emphasizes dismantling societal barriers rather than focusing solely on individual impairments. His work reflects a deep commitment to disability rights, accessibility, and social inclusion. To learn more about Ian's background, expertise, and accomplishments, visit his full biography.