Guideline B.1.2: Ensure that accessibility information is preserved

Guideline B.1.2: Ensure that accessibility information is preserved ()
Guideline B.1.2: Ensure that accessibility information is preserved. [Implementing B.1.2]
Rationale: Accessibility information (WCAG) is critical to maintaining comparable levels of web content accessibility (WCAG) between the input and output of web content transformations.

B.1.2.1 Restructuring and Recoding Transformations (WCAG): If the authoring tool provides restructuring transformations or re-coding transformations, and if equivalent mechanisms exist in the web content technology of the output, then at least one of the following is true: (Level A to meet WCAG 2.0 Level A success criteria; Level AA to meet WCAG 2.0 Level A and AA success criteria; Level AAA to meet all WCAG 2.0 success criteria)
(a) Preserve: Accessibility information (WCAG) is preserved in the output; or
(b) Warning: Authors have the default option to be warned that accessibility information (WCAG) may be lost (e.g. when saving a vector graphic into a raster image format); or
(c) Automatic Checking: After the transformation, accessibility checking is automatically performed; or
(d) Checking Suggested: After the transformation, the authoring tool prompts authors to perform accessibility checking.
Note 1: For text alternatives for non-text content, see Success Criterion B.1.2.4.
Note 2: This success criteria only applies when the output technology is "included" for conformance.
Implementing B.1.2.1
B.1.2.2 Copy-Paste Inside Authoring Tool (WCAG): If the authoring tool supports copy and paste of structured content, then any accessibility information (WCAG) in the copied content is preserved when the authoring tool is both the source and destination of the copy-paste and the source and destination use the same web content technology. (Level A to meet WCAG 2.0 Level A success criteria; Level AA to meet WCAG 2.0 Level A and AA success criteria; Level AAA to meet all WCAG 2.0 success criteria)
Implementing B.1.2.2
B.1.2.3 Optimizations Preserve Accessibility: If the authoring tool provides optimizing web content transformations, then any accessibility information (WCAG) in the input is preserved in the output. (Level A).
Implementing B.1.2.3
B.1.2.4 Text Alternatives for Non-Text Content are Preserved: If the authoring tool provides web content transformations that preserve non-text content in the output, then any text alternatives for that non-text content are also preserved, if equivalent mechanisms exist in the web content technology of the output. (Level A).
Note: This success criterion only applies when the output technology is "included" for conformance.
Implementing B.1.2.4