Accessibility Conformance Report
Voluntary Product Accessibility Template (VPAT) 2.5
OST WCAG Accessibility Checker
This is a self-assessed report. The conformance markings below reflect OST’s own evaluation of the tool as of July 16, 2026. An independent, IAAP-certified review to validate each criterion is in progress; this report will be updated with the validated results when that review completes.
Product information
| Field | Value |
|---|---|
| Name of product / version | OST WCAG Accessibility Checker — public release 2026-06 |
| Product description | A free, public, cloud-hosted scanner that audits a single web page or full website against WCAG 2.0 / 2.1 / 2.2 at conformance levels A and AA, with hosted reports and email delivery. |
| Date | July 16, 2026 |
| Contact | [email protected] |
| Notes | The product is a web application accessed via any modern browser. No download or install. |
| Evaluation methods used | Manual keyboard, screen reader (NVDA + VoiceOver), axe DevTools, color contrast analyzer, automated WCAG scan against the tool itself. |
Applicable standards / guidelines
| Standard | Included in this report |
|---|---|
| Web Content Accessibility Guidelines (WCAG) 2.2 | Yes (Levels A and AA) |
| Web Content Accessibility Guidelines (WCAG) 2.1 | Yes (Levels A and AA, inherited from 2.2) |
| Web Content Accessibility Guidelines (WCAG) 2.0 | Yes (Levels A and AA, inherited from 2.2) |
| Revised Section 508 (US, 2017) | Yes (maps via WCAG 2.0 AA) |
| EN 301 549 (European, current) | Yes (maps via WCAG 2.1 AA) |
Terms used in this report
| Term | Meaning |
|---|---|
| Supports | The functionality of the product has at least one method that meets the criterion without known defects, or meets with equivalent facilitation. |
| Partially Supports | Some functionality of the product does not meet the criterion. |
| Does Not Support | The majority of product functionality does not meet the criterion. |
| Not Applicable | The criterion is not relevant to the product. |
| Not Evaluated | Not evaluated in this report (allowed for AAA criteria only). |
WCAG 2.2 Report
Table 1 — Success Criteria, Level A
| Criterion | Conformance | Remarks |
|---|---|---|
| 1.1.1 Non-text Content | Supports | All non-text content has appropriate text alternatives. Action icons have aria-label. |
| 1.2.1 Audio-only and Video-only (Prerecorded) | Not Applicable | The tool contains no audio or video content. |
| 1.2.2 Captions (Prerecorded) | Not Applicable | No video content. |
| 1.2.3 Audio Description or Media Alternative | Not Applicable | No video content. |
| 1.3.1 Info and Relationships | Supports | Semantic HTML5 elements used throughout (headings, lists, tables for tabular data). Form labels programmatically associated. |
| 1.3.2 Meaningful Sequence | Supports | Visual order matches the DOM order. |
| 1.3.3 Sensory Characteristics | Supports | Instructions do not rely on shape, color, or location alone. |
| 1.4.1 Use of Color | Supports | State and severity are conveyed via text labels and icons, not color alone. |
| 1.4.2 Audio Control | Not Applicable | No audio plays automatically. |
| 2.1.1 Keyboard | Supports | All interactive elements are keyboard-operable. |
| 2.1.2 No Keyboard Trap | Supports | No keyboard traps in the tool flow. |
| 2.1.4 Character Key Shortcuts | Not Applicable | No single-character key shortcuts implemented. |
| 2.2.1 Timing Adjustable | Not Applicable | No time limits applied to user input. |
| 2.2.2 Pause, Stop, Hide | Not Applicable | No moving, blinking, or auto-updating content. |
| 2.3.1 Three Flashes or Below Threshold | Supports | No flashing content. |
| 2.4.1 Bypass Blocks | Supports | Skip-to-content link available on all pages. |
| 2.4.2 Page Titled | Supports | Every page has a unique, descriptive title. |
| 2.4.3 Focus Order | Supports | Focus order is logical and matches visual order. |
| 2.4.4 Link Purpose (In Context) | Supports | Link text describes the destination. |
| 2.5.1 Pointer Gestures | Not Applicable | No multi-point or path-based gestures used. |
| 2.5.2 Pointer Cancellation | Supports | Click activation on mouseup/click, not on mousedown. |
| 2.5.3 Label in Name | Supports | Visible labels match accessible names. |
| 2.5.4 Motion Actuation | Not Applicable | No motion-actuated functionality. |
| 3.1.1 Language of Page | Supports | html lang="en" set on all pages. |
| 3.2.1 On Focus | Supports | Focusing an element does not trigger a context change. |
| 3.2.2 On Input | Supports | Changing a control value does not trigger an unexpected context change. |
| 3.3.1 Error Identification | Supports | Form errors are identified in text and announced. |
| 3.3.2 Labels or Instructions | Supports | All form controls have labels; instructions provided where needed. |
| 4.1.1 Parsing | Not Applicable | Obsolete in WCAG 2.2 — removed. |
| 4.1.2 Name, Role, Value | Supports | Custom interactive elements use appropriate ARIA roles and states. |
Table 2 — Success Criteria, Level AA
| Criterion | Conformance | Remarks |
|---|---|---|
| 1.2.4 Captions (Live) | Not Applicable | No live video. |
| 1.2.5 Audio Description (Prerecorded) | Not Applicable | No video content. |
| 1.3.4 Orientation | Supports | Content is not restricted to a single orientation. |
| 1.3.5 Identify Input Purpose | Supports | Form inputs use appropriate autocomplete and inputmode where applicable. |
| 1.4.3 Contrast (Minimum) | Supports | Body text and interactive elements meet 4.5:1 / 3:1 contrast ratios. |
| 1.4.4 Resize Text | Supports | Content scales to 200% without loss of functionality. |
| 1.4.5 Images of Text | Supports | Text is used for all textual content; no images of text except logo. |
| 1.4.10 Reflow | Supports | Content reflows at 320 CSS pixels (mobile width) without horizontal scrolling. |
| 1.4.11 Non-text Contrast | Supports | UI components and focus indicators meet the 3:1 contrast ratio. |
| 1.4.12 Text Spacing | Supports | Text spacing adjustments do not cause loss of content. |
| 1.4.13 Content on Hover or Focus | Supports | Tooltips and on-hover content are dismissible, hoverable, and persistent. |
| 2.4.5 Multiple Ways | Supports | Navigation menu, search, and footer links provide multiple ways to find content. |
| 2.4.6 Headings and Labels | Supports | Headings and labels are descriptive. |
| 2.4.7 Focus Visible | Supports | Custom focus indicators with 3:1 contrast are visible on all interactive elements. |
| 2.4.11 Focus Not Obscured (Minimum) | Supports | Focused elements are not obscured by sticky headers or other content. |
| 2.5.7 Dragging Movements | Not Applicable | No drag-and-drop functionality. |
| 2.5.8 Target Size (Minimum) | Supports | Touch targets are at least 24×24 CSS pixels. |
| 3.1.2 Language of Parts | Supports | Foreign-language content within pages is appropriately marked with lang attributes. |
| 3.2.3 Consistent Navigation | Supports | Site navigation is consistent across all pages. |
| 3.2.4 Consistent Identification | Supports | Repeated components are identified consistently. |
| 3.2.6 Consistent Help | Supports | Contact / help mechanisms are presented consistently. |
| 3.3.3 Error Suggestion | Supports | Inline error messages suggest correct values where known. |
| 3.3.4 Error Prevention (Legal, Financial, Data) | Not Applicable | The tool does not process legal, financial, or irreversible data. |
| 3.3.7 Redundant Entry | Supports | The tool does not require redundant entry of the same information. |
| 3.3.8 Accessible Authentication (Minimum) | Not Applicable | The tool does not require user authentication for the free flow. |
| 4.1.3 Status Messages | Supports | Scan progress and queue position are announced via ARIA live regions. |
Revised Section 508 Report
Mapped through WCAG 2.0 AA. Each Chapter 5 success criterion equates to the WCAG row above.
| Chapter 5 — WCAG 2.0 | Conformance | Notes |
|---|---|---|
| 501.1 — Scope | Applicable | The product is ICT (Information and Communication Technology) — a web-based service. |
| 502 — Interoperability with assistive technology | Supports | Standard HTML / ARIA / keyboard semantics; tested with NVDA + VoiceOver. |
| 503 — Applications | Not Applicable | Not a desktop software application. |
| 504 — Authoring Tools | Not Applicable | The tool does not author web content; it evaluates it. |
| Chapter 5: 501.1 + WCAG 2.0 AA (all rows above) | See WCAG tables | Each Chapter 5 success criterion equates to the WCAG row above. |
| 602.2 — Documentation features | Supports | All documentation (help text, FAQ) is published in HTML and is itself accessible. |
Legal disclaimer
This Accessibility Conformance Report is provided for informational purposes only. Conformance levels reflect self-assessment as of the report date. The tool’s accessibility is actively maintained, and this report will be updated when significant changes are made. For specific questions or to report accessibility issues with the tool itself, contact [email protected].
Built on the VPAT 2.5 INT template from the Information Technology Industry Council (ITIC). itic.org/policy/accessibility/vpat