Free for everyone.
Funded by supporters.
Vesper Audit is free, forever. Become a supporter to fund the project and unlock the full professional toolkit as a thank-you.
For everyone
Free
No account, no expiry, no upsell. The full single-page audit experience.
- ✓ Single Page scan
- ✓ WCAG 2.2 A/AA checks
- ✓ In-app report viewer
- ✓ Link text checks
- ✓ Page load timeout
- ✓ Auto-updates
v1.1.2 · Apple Silicon · Intel Mac
Supporters are how Vesper exists. Every pledge keeps the suite running for everyone whose work isn't funded yet.
Everything Compared
Every Feature, Side by Side
Start with a page. Scale to the whole site.
| Feature | Free $0 Single-page essentials | Supporter $99/year 2 seats · 7-day trial |
|---|---|---|
| 01Scanning | ||
| Single page scan Audit any URL on its own, with no time limit. Useful for quick spot-checks on a specific page. | Included | Included |
| Full site crawl Follows every internal link from your starting URL and audits each page it finds. No sitemap required. | Not included | Included |
| WCAG 2.2 A/AA checks Runs axe-core on every page. Violations and best practices reported separately, with a WCAG criterion link for each issue. | Included | Included |
| Link text checks Flags ambiguous link text and duplicate link text that leads to different destinations, two patterns axe-core does not cover. | Included | Included |
| Broken contact link detection Validates the href of every tel: and mailto: link, catching links that look right on the page but will not dial or open mail. | Included | Included |
| Accessibility overlay detection Names third-party overlay products found on the site. Informational only, never counted as a violation. | Included | Included |
| Large image warnings Detects images over 1 MB and reports them as warnings, separate from violations. | Included | Included |
| Soft 404 and maintenance page reporting Pages that return 200 while showing a not-found or maintenance message get their own section, so they cannot inflate the clean-page count. | Included | Included |
| Pattern detector and page budget Spots repeating URL shapes during a crawl and offers to exclude them. Every scan has a page budget so large sites stay in bounds. | Included | Included |
| Page load timeout How long Vesper Audit waits per page before moving on. Increase for slow-loading sites. | Included | Included |
| Viewport width Sets the browser width during each scan. Use 375 for mobile, 768 for tablet. Default: 1280. | Not included | Included |
| 02Reports & Exports | ||
| In-app report viewer Browse results in the Reports tab right after every scan. Impact badges, WCAG references, and guide links built in. | Included | Included |
| Report summary page Every report opens on a summary: issues by severity, pages with issues, top issues by frequency, and the overlay, broken link, and large image reports. | Included | Included |
| Scan provenance Every report records the Vesper Audit and axe-core versions that produced it, so a re-scan comparison can be trusted. | Included | Included |
| PDF, Markdown, CSV, and Notion exports A client-ready PDF, a Markdown file for documentation, spreadsheets for analysis, and a Notion page hierarchy, all from a single run. | Not included | Included |
| Detailed report mode Per-format toggles that add a WCAG or Best Practice pill and an HTML snippet of the affected element to each violation. | Not included | Included |
| Auditor name and attribution Your name or agency in the header of every exported report, with the option to remove the Vesper Audit line for white-label delivery. | Not included | Included |
| 03Filtering & Focus | ||
| Report filter Narrow results to Links, Images, Forms, Color and contrast, Page structure, or Keyboard and focus. Hand the right report to the right person. | Not included | Included |
| Path and query exclusions Skip URL patterns during the crawl: event listings, paginated archives, or any section that would inflate results without adding findings. | Not included | Included |
| Violation suppressions Hide known false positives or accepted risks from output. Raw audit data is preserved and suppressed items are noted on each page. | Not included | Included |
| Scan profiles Save named configurations per client. One click restores the URL, scan options, exclusions, and suppressions for that site. | Not included | Included |
| 04Integrations & Updates | ||
| MCP server Run scans as tool calls from a compatible AI client. Scans run locally against your own Chrome; nothing leaves the machine except requests to the site. | Single page | Included |
| Automatic updates New versions download quietly in the background and install when you click Restart. An update only ever moves you forward. | Included | Included |
Free is the full single-page audit with no time limit and no account. Supporter adds site-wide scanning, exports, and the tools for repeat client work.
Not sure yet? Every download includes a 7-day Supporter trial - no card required. Start the trial from Settings > License & Plan in the app.
Already a supporter? Enter your license key in the app.