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What's the best validator?

A commercial recommendation prompt. We size how many people ask ChatGPT this from real search demand, then run it through ChatGPT to see which websites it recommends.

Est. people asking / mo
38K
CPC
$0.06
Total est. value / mo
$140
Common ways people ask this (15)
  • What's the best validator for web forms?
  • What's the best validator for data input?
  • What's the best validator for API responses?
  • What's the best validator for email addresses?
  • What's the best validator for JSON data?
  • What's the best validator for XML data?
  • What's the best validator for frontend use?
  • What's the best validator for backend use?
  • What's the best validator for enterprise use?
  • What's the best validator for a small project?
  • What's the best validator for speed?
  • What's the best validator for accuracy?
  • What's the best validator for flexible rules?
  • What's the best validator for strict validation?
  • What's the best validator for easy integration?

What ChatGPT actually answered

One of the 5 times we asked ChatGPT this, verbatim. The leaderboard below aggregates all 5 runs.

Websites ChatGPT recommends for this prompt

Aggregated across 5 runs (min 2/5 appearances). Estimated visits split the prompt's demand by rank. Sites matching the prompt's own brand are marked branded and excluded from the leaderboard.

RankWebsiteAppearsEst. visits / moEst. value / mo
1 validator.w3.org 4/5 753 $45
2 ethereum.org 4/5 452 $27
3 w3.org 4/5 301 $18
4 mozilla.org 3/5 207 $12
5 solana.com 3/5 151 $9
6 npmjs.com 4/5 113 $6
7 github.com 3/5 83 $4
8 developer.mozilla.org 2/5 64 $3
9 php.net 2/5 49 $2
10 google.com 2/5 38 $2
11 jigsaw.w3.org 2/5 30 $1
12 pypi.org 2/5 23 $1
13 cloudflare.com 2/5 19 $1
14 cosmos.network 2/5 15 $0
15 cardano.org 2/5 11 $0
16 ietf.org 2/5 9 $0
17 json.org 2/5 8 $0
18 rust-lang.org 2/5 6 $0
19 w3schools.com 2/5 5 $0
20 docs.oracle.com 2/5 4 $0
How is this estimated?

ChatGPT doesn't publish prompts, so we don't show logged conversations. We measure real demand for this topic from Google search volume, scale it to ChatGPT's user base (on average about 1 ChatGPT user for every 8 Google searchers, a ratio that varies by topic), and run the prompt through ChatGPT 5 times to record which websites it recommends and in what order. Estimated visits split that demand across the recommended sites by a click-through-by-rank curve. Every number is a modeled estimate, not measured analytics. Full methodology →