Accessible diagrams · Documentation-based guide with original exercise

SVG diagrams on a website: what the text alternative must explain

Content updated:

Scope: Documentation-based guide reviewed on 8 October 2026. Examples are fictional and protocols proposed; they are not product tests performed by CallsIQ.

Short answer

An SVG is not accessible merely because it is vector-based. For a process diagram, provide a short name and a textual explanation of steps, decisions and exceptions. “Sales diagram” identifies the image but does not replace its information.

Key verification: A reader can reconstruct all relevant process paths using the text without seeing the drawing.

Sources and limitations

An attractive acquisition graphic can still hide the key decision: what happens when a contact does not qualify. Write the procedure before drawing it. This guide proposes an editorial check for an agency diagram; the accepted result is equivalent information rather than a particular graphic format.

Decide what the image contributes

SVG diagrams: create a useful text alternative: table 1
UseInformation the reader needsCheck
Decoration with no new informationNo additional informationAvoid a redundant description
Icon identifying an actionPurpose of the actionIts name should describe the function
Diagram with decisionsRelationships, paths and exceptionsAdd a nearby structured explanation

The W3C WAI distinguishes short and long descriptions for complex images. Necessary information depends on purpose. When nearby text already explains everything, avoid repeating it in an excessively long name. Otherwise a generic label leaves readers without the drawing’s data or relationships.

Fictional example: call, requirements and next action

Our test process has these paths: record the call; check whether there is a serviceable need; if there is, create an opportunity and assign an owner; otherwise record the reason and close the assessment. An unknown need goes to pending verification, not rejection. This third exit must appear in both graphic and text.

A short name can identify the “call qualification workflow”. The preceding explanation provides the logic. Do not distinguish exits solely through red and green: label them with words. For a numerical graphic, add values and units in a table; “sales increase” does not reproduce amounts, period or comparison.

Export from Corel and review the integration

CorelDRAW documents SVG export. Export produces a graphic resource, but HTML integration needs its own review. An external SVG displayed through img can receive an alt attribute; an inline SVG needs an appropriate accessible name. Check the published result and explanation rather than just the editor file.

Acceptance review without seeing the diagram

Give someone outside the design process only the text and ask what happens to a call with an unknown need. Then check names and reading order through browser accessibility tools and a screen-reader review. If decisions are missing, repair the content before adjusting arrows. This is a CallsIQ proposal, not a completed conformity audit or Corel test.

Sources and limitations

Documentary review: . Content type: Documentation-based guide with original exercise.

Sources describe terms and capabilities stated by their owners. Proposed protocols and fictional examples do not establish product tests performed by CallsIQ.

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How this guide was prepared

Official sources, explained calculations and clearly labelled examples. Read about our methodology and use of AI in writing.