Office Compatibility Issues

How to Fix Illegible Fonts in Excel for the Web and OneDrive

Muhammad TalhaMuhammad Talha Oct 26, 2026 869 views

Question details

The user experiences illegible text rendering, specifically with Arial fonts, when viewing a specific Excel workbook in Excel for the Web via OneDrive, despite the file displaying perfectly on desktop and mobile applications.

How to Fix Illegible Fonts in Excel for the Web and OneDrive
Product
Microsoft Excel for the Web
Device & OS
Mac
Scenario
Viewing an Excel workbook containing equations or special characters in a web browser via OneDrive.
Observed behavior
Text formatted in Arial appears scrambled or illegible in Excel for the web, while rendering correctly in the desktop Excel app and on mobile devices.
Before you start

Ensure your web browser is updated to the latest version and verify if the issue occurs across different browsers like Chrome, Safari, or Edge to rule out a browser-specific rendering glitch.

Solution 1Recommended

Clear Browser Cache and Restart Your Mac

Clearing outdated or corrupted browser cache data can often resolve sudden font rendering and display issues in web applications.

Web applications like Excel for the Web rely on cached data to load faster. If the cached font files or scripts become corrupted, text may appear illegible. Clearing the cache forces the browser to download fresh, uncorrupted rendering instructions.

1
Access browser settings

Open your web browser (e.g., Safari, Chrome, or Edge) and navigate to the Settings or Preferences menu.

2
Clear browsing data

Locate the Privacy or History section and select the option to clear browsing data. Ensure that 'Cached images and files' is checked before confirming the deletion.

3
Restart your Mac

Close the browser completely and restart your Mac to refresh system resources and clear any lingering temporary memory.

4
Verify the workbook

Log back into OneDrive, open the problematic Excel workbook in Excel for the web, and check if the Arial fonts now display correctly.

Clear Browser Cache and Restart Your Mac
Quick Fix: In many cases, a simple cache clearance and system reboot is all it takes to restore normal font rendering in browser-based Office apps.
Free Microsoft Office alternative

Use WPS Office to Avoid Cloud Rendering Issues

If Excel for the Web continues to struggle with displaying fonts and equations properly, consider switching to WPS Office. It provides robust file compatibility and precise rendering for complex equations and formatting, ensuring your documents look exactly the same across all devices without relying on web browser rendering engines.

  1. 1. Download WPS Office: Download and install the free WPS Office suite on your Mac or PC.
  2. 2. Open WPS Spreadsheets: Launch the WPS Spreadsheets application.
  3. 3. Open your workbook: Click 'Open' and select your downloaded Excel file to view your data, equations, and fonts flawlessly.
Highly compatible with Microsoft Excel (.xlsx) formatsAccurate and consistent display of complex equations and special charactersFree, lightweight, and fast alternative to resource-heavy web appsFamiliar user interface ensuring a seamless migration and zero learning curve
microsoft office alternative - wps office

Frequently Asked Questions

Why do fonts look different in Excel for the Web compared to the desktop app?

Excel for the Web relies on the fonts installed on your local device and your web browser's rendering engine. If a specific font is substituted or if the browser struggles to interpret the file's XML structure, the text may appear illegible or completely different.

Can complex equations break font rendering in Excel for the Web?

Yes, inserting complex equations or unsupported special characters in the desktop app can occasionally cause formatting conflicts when the file is parsed by the web version, leading to scrambled text rendering for standard fonts like Arial.

Does clearing my browser cache delete my OneDrive files?

No, clearing your browser cache only removes temporary internet files, cookies, and saved website interface data. Your actual Excel workbooks and documents safely remain in your Microsoft OneDrive cloud storage.