David Dias

Audit PDFs linked from a website by checking file sizes and response headers, the information returned by the server. Flag large downloads for compression review and suggest HTML versions when the content needs a searchable web page.

中文简介正在准备中。当前显示英语简介。

• Auditing report and white paper download links
• Reviewing large PDFs for compression
• Considering HTML versions of PDF content

Review website JPEGs for progressive encoding, which displays a blurry preview before sharpening. Identify images that could use this format, consider file size and loading behavior together, and explain how to confirm the change in browser developer tools.

中文简介正在准备中。当前显示英语简介。

• Reviewing how JPEGs appear during loading
• Checking JPEG fallbacks for WebP or AVIF
• Reviewing image delivery through a CDN or build process

Audit and add structured organization data on a business or brand homepage. Check machine-readable details such as the official name, logo, contact information, and social profiles to help Google understand the organization and its search information panel.

中文简介正在准备中。当前显示英语简介。

• Audit organization data on a company homepage
• Add brand names, logos, and contact details in JSON-LD
• Check links to official social profiles

Review form fields for code that blocks pasting, then remove those restrictions. The skill helps check password manager use, keyboard interactions, and accessibility so people can paste passwords and other long values into inputs.

中文简介正在准备中。当前显示英语简介。

• Checking why passwords cannot be pasted
• Reviewing credit card fields for paste restrictions
• Improving form accessibility

Review website text and interface instructions for jargon, complex sentences, and unclear actions. Simplify wording, explain technical terms, and adjust reading difficulty so the intended audience can understand content and follow instructions.

中文简介正在准备中。当前显示英语简介。

• Simplifying website instructions
• Explaining technical terms for general readers
• Reviewing interface text for accessibility

Review whether every page provides an accessible privacy policy link, especially in the footer. Check that the policy explains data collection, use, sharing, retention periods, contact details, and user rights, and identify missing information.

中文简介正在准备中。当前显示英语简介。

• Checking privacy policy links across all pages
• Adding a privacy policy link to a shared footer
• Reviewing data retention and sharing disclosures

Create a custom offline page and configure a service worker, a browser background script, to cache it in advance. Show it when page navigation fails, and review resource dependencies and fallback conditions.

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• Add an offline page to a PWA
• Guide users during connection loss
• Review offline page caching

Audit website images for excessive file sizes, unnecessary metadata, and loading issues. Apply format-specific compression and cleanup, then compare file sizes before and after changes to show the resulting reduction in image data.

中文简介正在准备中。当前显示英语简介。

• Finding images that slow page loading
• Comparing file sizes before and after compression
• Removing unnecessary image metadata

Measure the total size of a web page and its resources, identify what slows loading, and reduce unnecessary weight. Use a 1500KB limit to guide image optimization, code compression, and removal of unused resources.

中文简介正在准备中。当前显示英语简介。

• Investigating slow page loads on mobile networks
• Checking total page size against a size budget
• Reducing heavy images and JavaScript files

Review password fields for security and ease of use. Check autocomplete settings, accessible visibility controls, strength indicators, and password manager support, then verify relevant browser and HTTP behavior in an environment resembling production.

中文简介正在准备中。当前显示英语简介。

• Reviewing login and registration forms
• Checking password manager compatibility
• Improving accessible password visibility controls

Review slow page loads and choose resource hints, browser instructions that start loading or connecting earlier. Use measurements to identify bottlenecks, then recommend preload, preconnect, prefetch, or dns-prefetch for important assets and likely next-page resources.

中文简介正在准备中。当前显示英语简介。

• Reviewing slow loading of prominent images and fonts
• Preparing connections to external services
• Prefetching resources for likely next-page visits

Review HTTP response headers and restrict browser features an application does not need, such as camera, microphone, and location access. Guide Permissions-Policy settings that limit what attackers could use if the site is compromised.

中文简介正在准备中。当前显示英语简介。

• Review security headers before a release
• Disable unused camera and microphone features
• Check feature restrictions for third-party iframes

Review messages that display counts and check whether each target language gets the correct plural form. Replace simple number-and-text joins or singular/plural branches with Intl.PluralRules or ICU MessageFormat, which select wording according to language-specific rules.

中文简介正在准备中。当前显示英语简介。

• Reviewing count messages in multilingual interfaces
• Adding plural forms for Arabic or Russian
• Checking translation files and i18n settings

Review early connections to third-party services such as fonts and APIs. Use loading measurements to identify essential domains, recommend preconnect hints that prepare connections in advance, and remove unnecessary hints that add overhead.

中文简介正在准备中。当前显示英语简介。

• Investigating connection delays for external fonts and APIs
• Reviewing preconnect hints in the page head
• Removing unnecessary early connections

Audit important pages for settings that hide descriptions in Google search results. Check robots meta tags and response headers, report affected URLs, and adjust snippet controls after confirming whether the restriction is intentional.

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• Investigating missing descriptions in search results
• Auditing snippet settings on key landing pages
• Reviewing robots tags and response headers

Review HTML object elements and add meaningful fallback content for people who cannot load or view embedded material. Identify missing alternatives, suggest text or appropriate HTML elements, and explain how to verify accessibility.

中文简介正在准备中。当前显示英语简介。

• Find object elements with missing fallback content
• Add alternatives for embedded content that fails to load
• Review whether fallback content conveys equivalent information

Check images used in social link previews through Open Graph metadata. Verify dimensions, aspect ratio, file size, and HTTPS URLs, then resize assets and update tags to reduce missing images and unwanted cropping.

中文简介正在准备中。当前显示英语简介。

• Auditing social link preview images
• Preparing 1200×630-pixel sharing images
• Investigating missing or cropped preview images

Audit a page’s social sharing URL against its canonical URL, the preferred page address. Identify differences in domains, paths, or tracking parameters, and align the tags to address split share counts.

中文简介正在准备中。当前显示英语简介。

• Investigating unexpectedly low social share counts
• Checking Open Graph tags before publication
• Reviewing tracking parameters and URL variations

Review mobile and tablet pages in portrait and landscape. Identify orientation locks, blocking rotation messages, and hidden controls, then suggest responsive layout changes so essential content and actions remain usable in both orientations.

中文简介正在准备中。当前显示英语简介。

• Checking mobile and tablet orientation support
• Reviewing forms after device rotation
• Inspecting dashboard and media layouts

Measure page loading speed and identify what prevents a page from loading in under three seconds. Use performance measurements to guide improvements such as lazy loading, caching, CDN delivery, and reducing resource costs.

中文简介正在准备中。当前显示英语简介。

• Investigating slow page loads
• Finding heavy resources and costly rendering steps
• Checking performance on a throttled 3G connection

Review pagination markup so people using screen readers or keyboards can understand their current page and move between pages. Check navigation labels, current-page attributes, focusable controls, and announcements when the page changes.

中文简介正在准备中。当前显示英语简介。

• Reviewing pagination in search results
• Checking keyboard navigation between pages
• Improving screen reader labels for pagination

Review URL parameters used for filters, sorting, pagination, and tracking. Check canonical tags, which identify a preferred page URL, and recommend consistent handling of URL variants to address duplicate content and unnecessary search engine crawling.

中文简介正在准备中。当前显示英语简介。

• Reviewing filtered and sorted product URLs
• Removing tracking parameters from canonical URLs
• Investigating crawlable URL combinations

Set and review limits for bundled file size and page performance so CI, automated checks on code changes, can catch regressions. Check enforcement on pull requests and review production monitoring for slowdowns after release.

中文简介正在准备中。当前显示英语简介。

• Reviewing performance limits in CI configuration
• Checking pull requests that add dependencies or assets
• Setting limits for file size and page performance

Check whether a web app is ready for PWA installation, which lets users install it like an app. Review HTTPS, app settings, icons, and offline responses, and identify missing or inconsistent configuration.

中文简介正在准备中。当前显示英语简介。

• Auditing a web app's readiness for PWA installation
• Checking settings before adding an install prompt
• Reviewing icon sizes and Android maskable icons