Duplicate Content Finder

Find duplicate and overlapping WordPress posts before they compete with each
other in search: the 2019 guide and the 2023 rewrite, the category page and the
pillar post, three near-identical round-ups.

Run one scan and the plugin finds every overlapping pair, shows which version
is stronger and why, lists the content that exists only in the weaker one, and
builds a merge and redirect plan you can export. It changes nothing on your
site automatically — the decision stays yours.

What it finds

• Every overlapping pair, ranked. Sorted by similarity and banded near
  identical, strong overlap or partial overlap, because a category is easier to
  act on than a bare percentage.
• Duplicate content in any language. Japanese, Chinese and Korean posts are
  compared with character shingles instead of word shingles, so unspaced scripts
  match properly instead of producing noise.

What you see after scanning

• Which post should stay, and why. Content length, publication date,
  comment activity, inbound internal links, featured image and slug quality are
  scored side by side, so you can see the reasoning behind the canonical
  suggestion — and disagree with it.
• What you would lose. The sections that exist only in the version you are
  about to retire: the question worth answering before any merge.
• A redirect plan before anything is created. Source path, target path and
  status code for each retired post.
• CSV export. The duplicate report and the redirect plan, in a shape other
  redirect plugins can import.

Why it is different

Spotting two similar posts is the easy part. A content audit becomes useful
when it tells you which version to keep and what merging would cost, and this
plugin is built around that decision rather than a similarity score alone.

Safe by design

• Read-only. It never merges, deletes, rewrites, trashes or redirects
  anything.
• Nothing leaves your server. No external service, no analytics, no
  telemetry.
• No account, no API key. Install it and scan.
• Tidy. Scan data lives in three tables of its own, removed on uninstall.

How it works

1. Scan. Each post gets a fixed-length fingerprint, and only posts whose
   fingerprints collide are compared in full — so large sites stay fast.
2. Compare. For each overlapping pair: which version is stronger, on what
   evidence, and what only the other one contains.
3. Plan. Export the merge and redirect plan and act on it by hand, with a
   redirect plugin you already use, or with Pro.

Free, and the separate Pro plugin

Free is a complete job: find the overlap, compare, decide, export the plan.
It is not a trial — nothing expires and no feature stops working.

A separate Pro plugin, distributed outside WordPress.org and not bundled here,
carries the plan out inside WordPress: it performs the merge, creates the 301
redirects, rewrites internal links pointing at the retired post, and keeps a
revision backup with rollback.

Try it without installing

A WordPress Playground blueprint ships with this plugin. When the directory
offers a Live Preview for it, that preview boots a temporary WordPress in your
browser, seeded with posts that overlap on purpose, and opens straight on the
results. Nothing is installed on your own site.

Full documentation and worked examples:
https://hublo-wp.com/free-plugins/duplicate-content-auditor/

External services

This plugin does not contact any external service on its own. Nothing is sent
from your site in the background.

The “Upgrade to Pro” button is an ordinary link. If you click it, your
browser opens https://hublo-wp.com/buy/duplicate-content-auditor, operated by
HUBLO. While the Pro edition is on sale, that address takes you to Stripe’s
hosted checkout, where Stripe takes the payment; this plugin never sees or
handles card details. The link carries no query
string: your site address, your email address, your installation identifier
and your scan results are never appended to it and never leave your site.
Nothing happens until you click.

The Pro edition is a separate plugin distributed outside WordPress.org. This
plugin never downloads it, never installs it and never updates it. It fetches
no executable code from anywhere. After purchase you download the Pro ZIP in
your browser and install it yourself via Plugins > Add New > Upload Plugin.

• Purchase service: https://hublo-wp.com/buy/duplicate-content-auditor – operated by HUBLO
• Payment processing: Stripe – https://stripe.com/privacy
• Terms: https://hublo-wp.com/terms/
• Privacy: https://hublo-wp.com/hublo-privacy-policy/
• Refunds: https://hublo-wp.com/refund-policy/