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② 後台搜尋「PlugUpp Link & Image Health Audit」→ 直接安裝（推薦）
原文外掛簡介
PlugUpp Link & Image Health Audit finds broken links, broken images and SSL problems by checking the links and images your visitors actually see. It renders each of your own pages through the normal front-end pipeline and inspects the final HTML – so it catches links and images injected by themes, menus, widgets, footers and page builders that database-only checkers miss.
Everything runs on your own server. There is no external crawler, no per-link quota, and nothing about your site is sent to a third-party service.
Upgrade to Premium for a Learning Engine that tunes itself to your site, scheduled scans and email reports, change detection, soft-error and Safe Browsing checks, rule-based exclusions and CSV export. See plans and pricing
What you get on the free plan
Rendered-page scanning – checks the links and images that actually ship to visitors, including those added by your theme, menus, widgets, footers and page builder that database-only checkers never see
Links, images and resources – internal and external links, images, and page resources (CSS, JS, icons, fonts)
All your content types – posts, pages, and any public custom post type, including WooCommerce products
Unpublished content too – optionally scan drafts, scheduled, pending and private content, so links are checked before they go live
Clear verdicts – broken links and images, SSL and certificate problems, permanent and temporary redirects, and “blocked, not broken” hosts (for example a Cloudflare challenge) told apart from genuine failures
Mixed content detection – flags images, embeds and page resources that load over plain HTTP on your HTTPS site, which browsers block or downgrade
Archived-copy links – every broken external link gets a “View archived copy” link to the Wayback Machine, so you can see what the dead page said or pick a replacement
By URL and By page views – sorted worst-first, with separate Issues, Warnings and Notices counts so you can triage at a glance
Drill-down with evidence – see exactly which pages a broken URL appears on, and open the page source with the offending link or image highlighted in context
URL parameter handling – cache-busters and tracking tags (ver, utm_source, fbclid and the like) are ignored so the same resource is not counted as many different URLs; the common ones are pre-filled, and you can add your own
Exclude and ignore – exclude pages from scanning individually, from the Exclusions screen, or in bulk from the standard Posts and Pages screens; ignore individual URLs
Built-in log viewer – file-based logging with a viewer on the Logs tab
No quotas, nothing leaves your site – scan as much as you like, entirely on your own server
Password-protected content is never scanned – there is no way to render it without the password. Unpublished content is off by default; when you enable it, drafts, scheduled, pending and private posts are rendered privately for the scan only and never shown to visitors.
What Premium adds
The premium version is a separate plugin, delivered from plugupp.com, that adds intelligence, automation and reporting – still entirely on your own server.
URL Parameter Learning Engine – watches the parameters in your own scans and suggests the cache-busters and tracking tags worth ignoring, each with evidence, a live example you can open both ways, and a one-click add
Scheduled scans – run scans automatically on the schedule you choose, on standard WordPress cron
Email reports – get the results by email, every run or only when something needs attention
Change detection – a changes-since-last-scan digest: what newly broke, what changed, what got fixed
Soft-error detection – catches pages that return 200 OK but actually show an error, a parked domain or an expired-site notice
Google Safe Browsing checks – check external destinations against Google’s malware and phishing lists, with your own API key
Rule-based exclusions – auto-exclude whole patterns of content by post type, category or tag, author, or URL shape; save rule sets and carry them between sites
One-click filters and CSV export – narrow any view to a specific issue type and export it
Browser user-agent control – reduce “blocked, not broken” challenges from strict hosts
Multi-site licences – one licence covers 1, 3, 5 or unlimited sites
See the full plan comparison and pricing
External services
This plugin connects to the following external services.
Link and image URLs found on your pages
Checking a link or image means requesting the URL to see whether it resolves. This is the core function of the plugin.
When data is sent: during a scan, for every unique external link, image or resource URL found in your pages’ rendered output.
What data is sent: nothing beyond the HTTP request to the URL itself, made only to read its response status (for example 200, 404, or a redirect). Only URLs that already appear on your own pages are contacted. Internal links are checked against your own server.
The plugin also renders your own pages by requesting them on your own server (a self-request); that is your site contacting itself, not a third-party service.
Google Safe Browsing (Premium, optional)
If you enable Safe Browsing checks and provide your own Google API key, the plugin checks external link destinations against the Google Safe Browsing threat lists.
When data is sent: during a scan, only when you have entered a Google API key. With no key, this feature is off and nothing is sent.
What data is sent: the external URLs found in your scan are sent to the Google Safe Browsing Lookup API to check them against Google’s malware and phishing lists.
Terms of service: https://cloud.google.com/terms
Privacy policy: https://policies.google.com/privacy
Freemius
The plugin uses the Freemius platform for licence activation, plan changes, plugin updates (for paid plans), and as the Merchant of Record for purchases.
When data is sent: on first plugin activation as part of the user-consented opt-in flow, on licence activation or deactivation, on plugin update checks (paid plans), and on uninstall (for optional feedback). Sending the initial opt-in data is the user’s choice – declining the opt-in still lets the plugin work in full. Scanning is fully local and never requires the connection.
What data is sent: standard Freemius opt-in data including site URL, administrator email address, WordPress version, PHP version, plugin version, and active theme name.
Terms of service: https://freemius.com/terms/
Privacy policy: https://freemius.com/privacy/
