Adjust text font, including size and spacing (leading and kerning)

Adjust the size and style of font on a page, along with the spacing between the letters and between lines (leading and kerning).

Related RtF projects and Discussion Groups

• Blindness and Low Vision Discussion Group (BLVDG)

Discussion by Disabilities (Benefits & Preferred Behaviors)

Low Vision

• Adjustable fonts and spacing allow the user to customize text to the size and shape that is easiest to see and understand.

Existing Products

Please note that these products are not necessarily endorsed by RtF, but represent the range of available options.

Open Source and free

These products are free and their source code may be modified with few restrictions.

• AccessiBar Extension - Mozdev, Edan Kemelman
• Amaya - W3C
• CLC Star - CLC (Charles Chen)
• Firefox Accessibility Extension - Illinois Center for IT Accessibility
• Web Access Gateway - U.of Cambridge, Silas Brown

Free, not necessarily open source

These products are free to use, but may have strict restrictions on viewing and modifying source code.

• JISC TechDis User Preference Toolbar - TechDis, Key2Access
• LowBrowse - Lighthouse International
• Surf Right Toolbar - Royal National Institute of Blind People (RNIB)
• Web Accessibility Toolbar - Vision Australia
• Web Adaptation Technology - IBM
• WebVisum - WebVisum

Commercial, no free trial

These products must be purchased to be used, and did not offer free trials at the time of posting.

• ReadAble - Iansyst Ltd
• WebAdapt2Me - IBM

Related Research and Papers

• Visual profiles: a critical component of universal access - University of Miami - Jacko, J.A., Dixon, M.A., Rosa, R.J., Scott, I.U., and Pappas, C.J. (1999)
• Improving GUI accessibility for people with low vision - RPI - Kline, R.L. and Gilnert, E.P. (1995)