Side by side
HTML_CodeSniffer vs PDFUA.io Validator
Both stand on accessibility testing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIExtensionLinux+4
HTML_CodeSniffer provides several ways to inspect HTML against accessibility and coding rules, including custom standards. Its client-side design and documented Node.js routes make it adaptable for page or fragment checks.
Visit HTML_CodeSniffer Free plan APISelf-hostedWeb
PDFUA.io Validator combines standards checking, stored evidence, monitoring and API access. Its credit rules, paid pricing and early-access onboarding are important considerations.
Visit PDFUA.io ValidatorThe facts
| HTML_CodeSniffer | PDFUA.io Validator | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Extension, Linux, Mac, Self-hosted, Web, Windows | API, Self-hosted, Web |
| Lowest paid plan | Not published | Cloud · Starter: $19 a month |
| Plans published | None | 5 |
| Maker | Not published | Not published |
| Website | squizlabs.github.io | pdfua.io |
| On accessibility testing software | #85 of 169 | #89 of 169 |
HTML_CodeSniffer: what it does well
- Free and open source
- WCAG 2.1 and Section 508 checks
- Custom sniffs and standards
- JavaScript and command-line use
- Bookmarklet supports four browsers
What to know first
- Browser extension is not available
- Auditor translations are basic
- Requires setup for self-hosting
PDFUA.io Validator: what it does well
- Checks WCAG 2.1 AA and PDF/UA-1
- Batch validation supports files up to 200 MB
- Reports preserve SHA-256 audit evidence
- Monitoring schedules recurring domain scans
- API returns JSON or HTML reports
What to know first
- Free plan has 20 credits monthly
- Aborted validations cost one credit
- Paid plans start at $19/mo
- Early access is limited to selected organizations
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