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Z403-missing-alt — MISSING_ALT

Z-Code: Z403 MISSING_ALT · Engine: standalone · Exit: 0

zenzic check all
standalone - 2 files (1 docs, 1 assets) - 0.0s - 123 files/s
docs/index.md:14
⚠[Z403]Image 'diagram.png' has no alt text.
12│ The following diagram shows the system components:
13│
14❱![](diagram.png)
15│
16│ The `![](diagram.png)` syntax above has an empty alt attribute →
**Z403**.
docs/index.md:16
⚠[Z403]Image 'diagram.png' has no alt text.
14│ ![](diagram.png)
15│
16❱The `![](diagram.png)` syntax above has an empty alt attribute →
**Z403**.
17│
18│ ## What Zenzic Reports
────────────────────────────────────────────────────────────────────────────────
Summary:✘ 0 errors⚠ 2 warningsℹ 0 info- 1 file with findings
* Analysis complete: All statically-detectable links, credentials, and
references verified.
Refer to https://zenzic.dev/docs/reference/finding-codes for remediation · Try
'zenzic check --help' for options.
[ Suppression Audit: 0/30 (inline: 0, per-file: 0)
exit 0

The Fixture​

The fixture lives in examples/z403-missing-alt/ in the Zenzic repository. It contains documents demonstrating the Z403 violation.

Running the Example​

# Clone the Zenzic repository — no extra installation required
cd examples/z403-missing-alt
uvx zenzic check all

Expected output:

standalone - 2 files (1 docs, 1 assets) - 0.0s - 123 files/s

docs/index.md:14  !  [Z403]  Image 'diagram.png' has no alt text.

    12  │  The following diagram shows the system components:
    13  │  
    14  ❱  ![](diagram.png)
    15  │  
    16  │  The `![](diagram.png)` syntax above has an empty alt attribute → 
**Z403**.

docs/index.md:16  !  [Z403]  Image 'diagram.png' has no alt text.

    14  │  ![](diagram.png)
    15  │  
    16  ❱  The `![](diagram.png)` syntax above has an empty alt attribute → 
**Z403**.
    17  │  
    18  │  ## What Zenzic Reports

────────────────────────────────────────────────────────────────────────────────

Summary:  x 0 errors  ! 2 warnings  i 0 info  - 1 file with findings

* Analysis complete: All statically-detectable links, credentials, and 
references verified.
Refer to https://zenzic.dev/docs/reference/finding-codes for remediation · Try 
'zenzic check --help' for options.
[ Suppression Audit: 0/30 (inline: 0, per-file: 0)

Exit code: 0

Interpreting the Output​

The Z403 finding indicates a MISSING_ALT issue.

This error or warning is raised by Zenzic when an inline markdown image ![](url) or an HTML <img> tag has no alt text. Alt text is essential for web accessibility (a11y) and SEO indexability. In this specific example:

  • Scan Type: Structure Guard
  • Severity: Warning
  • Impact: Missing alt text violates accessibility policies, resulting in a DQS deduction of 1.0 point.

Resolve the Issue​

Exit code 1. Provide clear, descriptive text within the brackets of the image definition or the alt parameter of the HTML tag.

See Also​