URL Parameters
In one sentence
The key-value pairs after the question mark, used for filtering, sorting, tracking and pagination.
Analogy Mental model
Handling notes on a parcel. Red, medium, express. They change how it travels, not what is inside.
In practice What you actually do
Decide per parameter class: canonicalise sort order and tracking to the clean URL, noindex filter combinations that serve no unique demand, and leave the ones mapping to a real customer need as indexable pages of their own.
Where people get burned Pitfalls
Faceted navigation multiplies: four colours, five sizes and three price bands is sixty URLs, and a crawler finds all of them. Without a rule, the index fills with combinations nobody searches for.
This entry was written in English from the Chinese original, not machine-translated. Read the Chinese version →