The 83 X-to-Y converter pages were generated from one template with the
format names substituted in. Three of the four features and two of the
three FAQs were byte-identical across all 82 non-override presets, every
page came out at exactly 144 words, and pages within a family sat at
roughly 61% similarity with identical shingle counts. That is the
mass-produced fingerprint, and the same shape that got the docs tool
pages deduped in #662. All 83 are indexed today, so this is prevention
rather than repair.
Copy is now derived from what actually differs between the two formats:
alpha, animation, colour depth, lossy re-encode behaviour, container
reach, and where each format is genuinely accepted. png-to-jpg explains
that transparency gets flattened; gif-to-jpg warns you keep frame one
only; psd-to-svg says to export Photoshop's real vector layers instead of
tracing them.
Mean similarity across all 3,403 pairs drops from 34.8% to 6.7%, and the
uniform 144-word length is gone (206-256 words, varying). Within-family
max is roughly flat: on the built pages, image goes 62.8% to 66.1%, video
61.3% to 66.4%, audio 60.7% to 60.6%. Generated copy has a similarity
floor, and beating it inside a family would take hand-written pages. What
has gone is the identical shingle count per family, which was the
strongest tell.
Also drops the one-off eps-to-svg override: all five vectorize presets
now get honest tracing copy, not just that one.
Verified: landing builds 798 pages, zero verbatim repeats between a
page's blurb and its own features or FAQs, biome clean.
Lands five integrated branches: pipeline templates (#355), analytics opt-out (#354), 83 conversion presets bringing the catalog to 240 tools (#356), self-hosted positioning (#353), and e2e modernization (#351).
Integration fixes: aligned stale web analytics tests with the opt-out/allow-list model, closed 3 CodeQL incomplete-sanitization alerts in the i18n generator, resolved settings/index/docs/format-matrix conflicts, and corrected tool counts to 240.
