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CSS-Grafiken – wenn assistive
Techniken nicht mehr greifen
Webmontag Kassel #1
18. November 2013
Kerstin Probiesch
•
•
•
•
•

Accessibility, Social Media, Projektleitung
Gutachten nach WCAG 2.0 oder BITV 2.0
Schulung un...
Assistive Techniken
z.B. Benutzerdefinierte
Farbeinstellungen in Browser und /
oder Betriebssystem
Oft gehen jedoch Informationen
verloren
Ursache
Über CSS eingebundene Grafiken
werden unter Windows OS
ausgeblendet
Informative Grafiken gehören in
das HTML und benötigen einen
Alternativtext
Oder es wird eine gleichwertige Alternative
zur Verfügung gestellt
Oder es wird ein Workaround
eingesetzt (z.B. für Sprites)
http://blog.paciellogroup.com/2012/
08/notes-on-accessible-css-i...
WCAG 2.0
F3: Failure of Success Criterion 1.1.1
due to using CSS to include images
that convey important information
Prüfen in Windows OS mit
Alt+Umschalt+Druck
Am besten im IE, da dort diese
Systemeinstellung direkt greift
Auch auf Formulare achten!
Kontakt: k.probiesch@gmail.com
Dieses Werk ist lizenziert unter einer Creative Commons:
Namensnennung – Nicht kommerziell ...
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen
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CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen

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CSS-Hintergrundgrafiken - Wenn assistive Techniken nicht mehr greifen

  1. 1. CSS-Grafiken – wenn assistive Techniken nicht mehr greifen Webmontag Kassel #1 18. November 2013
  2. 2. Kerstin Probiesch • • • • • Accessibility, Social Media, Projektleitung Gutachten nach WCAG 2.0 oder BITV 2.0 Schulung und Beratung Barrierefreie PDF-Dateien Fachautorin (u.a. Screenguide, PHPMagazin, Fachbuch zur Barrierefreiheit) • Invited Expert beim W3C (WCAG Working Group) • 50% Webmontag Marburg Orga
  3. 3. Assistive Techniken z.B. Benutzerdefinierte Farbeinstellungen in Browser und / oder Betriebssystem
  4. 4. Oft gehen jedoch Informationen verloren
  5. 5. Ursache Über CSS eingebundene Grafiken werden unter Windows OS ausgeblendet
  6. 6. Informative Grafiken gehören in das HTML und benötigen einen Alternativtext
  7. 7. Oder es wird eine gleichwertige Alternative zur Verfügung gestellt
  8. 8. Oder es wird ein Workaround eingesetzt (z.B. für Sprites) http://blog.paciellogroup.com/2012/ 08/notes-on-accessible-css-imagesprites/
  9. 9. WCAG 2.0 F3: Failure of Success Criterion 1.1.1 due to using CSS to include images that convey important information
  10. 10. Prüfen in Windows OS mit Alt+Umschalt+Druck Am besten im IE, da dort diese Systemeinstellung direkt greift
  11. 11. Auch auf Formulare achten!
  12. 12. Kontakt: k.probiesch@gmail.com Dieses Werk ist lizenziert unter einer Creative Commons: Namensnennung – Nicht kommerziell – Keine Bearbeitung

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