RegexProof
用自然语言描述需求，生成可解释、可测试的正则表达式，并标注边界用例与 ReDoS 风险。
旗舰工具页：标题、卖点与首段已中文化；FAQ 等长段可能仍为英文，待复审。
用自然语言描述需求，生成可解释、可测试的正则表达式，并标注边界用例与 ReDoS 风险。
功能概览
- NL description to regex
- Pick your language flavor
- Part-by-part explanation
- Edge cases called out
How does it turn English into a regex?
You describe the pattern in plain language — 'an email', 'a slug with hyphens', 'a hex color' — and RegexProof returns a working expression for your chosen flavor, not a guess you have to debug by hand.
Which languages and flavors are supported?
It lets you pick the flavor (PCRE, Python, JavaScript, Go, and others) so the syntax matches your runtime. The same intent produces different valid output per engine, which is where hand-written patterns silently break.
What does the part-by-part explanation show?
Each group and token is explained in order, so you can verify the pattern means what you intended. That explanation is also what you paste into a PR so a reviewer trusts the regex without re-deriving it.
Which edge cases does it warn about?
It calls out the traps that fail in production: greedy vs lazy quantifiers, unicode and emoji, case sensitivity, and anchors. Those are the differences between a regex that passes your one test and one that survives real input.
一览
- Starts at $19/month (lowest tier of the 8 paid 工具)
- Supports PCRE, Python, JavaScript, Go and more
- Returns a part-by-part explanation per pattern
常见问题
What does RegexProof do?
RegexProof turns a plain-English description into a correct regular expression for your language, with a part-by-part explanation and the edge cases — greedy matching, unicode, anchors — that usually break patterns in production.
How much does RegexProof cost?
Plans start at $19/month (billed $190/year). Open the live tool for the current plan and any free tier before relying on it in code.
Who is RegexProof for?
Developers and data people who need a correct regex without memorizing every flavor's quirks. It suits teams that want a reviewed, explained pattern, not a black-box output.
Which regex flavors are supported?
You pick the flavor — PCRE, Python, JavaScript, Go, and others — and the output matches that engine, avoiding the syntax mismatches that make copied patterns fail at runtime.
Does it explain the pattern?
Yes. Every group and token is explained in order, and you can paste that explanation into a pull request so a reviewer verifies the regex without re-deriving it from scratch.
How does it handle edge cases?
It flags greedy vs lazy quantifiers, unicode and emoji, case sensitivity, and anchors — the differences between a pattern that passes one test and one that survives real-world input.
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