Products

Regex 101

Uses AI

Reg ular Ex pressions 101

regex101.com Software Development / Developer Utilities

AI Benchmark
Desktop
Mobile
Monthly visits
461.8K
Down6.4%MoMSep 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
Free
No monthly subscription pricing
Creators
Unlinked
No verified creators
Launched
13y ago
2013-01-14 · Est.

Traffic

Monthly visitsData through Sep 2026
Events4 changes

Marketing moves

Launches, search & content, referrals, promotions
  • Launched on 阮一峰周刊投稿Launch

    [推荐] 在线正则表达式调试工具https://regex101.com/ — https://regex101.com/ 在线正则表达式调试工具,可以实时显示正则表达式匹配结果以及生成正则表达式代码。还可以看这个视频 https://www.bilibili.com/video/BV1ef4y1U7V4/ 了解具体使用方法

    Apr 15, 2020 · 6y agoLaunch page

  • Launched on Show HN (21 pts · 7 comments)Launch

    Online Regex Tester for PHP, PCRE, Python, Golang and JavaScript

    Aug 25, 2018 · 8y agoLaunch page

  • Launched on Product HuntLaunch

    Online regex tester and debugger

    Jan 19, 2016 · 10y agoLaunch page

  • Launched on Show HN (3 pts · 1 comments)Launch

    my improved regex testing and debugging service, regex101

    Nov 26, 2013 · 12y agoLaunch page

  • Launched on Show HN (3 pts · 4 comments)Launch

    Regex101 - Interactive regular expression learning tool and builder — Hello! I have long been at work with my site which purpose is to provide a free of charge service where you can learn and create your regu…

    Jan 14, 2013 · 13y agoLaunch page

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics
Show HN
2013-01-14Source
Post excerpt:
Hello! I have long been at work with my site which purpose is to provide a free of charge service where you can learn and create your regular expressions. I have pretty much just thought to myself "What would I like?" and then implemented that. What do you guys think? All form of feedback is appreciated. Note: For those who are familiar with the service 'rub

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Direct51%
  • Organic Search39%
  • Referrals4%
  • Social3%
  • Other2%

Countries

  • United States19%
  • Russia7%
  • Germany6%
  • France6%
  • India5%

Search

Domain authority —Domain registered 2012-08-15

KeywordMonthly volume
regex93.4K
regex10131.3K
regex tester11.8K
regex online6,520
regex 1013,090

Traffic data: Vaneform

Pricing

Pricing page not identified yet, or no public pricing listed.

Pages & changes

Tracked since 2016-01-19

Key pages

Weekly snapshots

Changes

  1. Nov 1 · 13d ago

    Homepage headline (H1) changed to “Regular Expressions 101”Positioning

    regular expressions 101→Regular Expressions 101

  2. Nov 1 · 13d ago

    Adopted technology: Base UIFeatures

    —→Base UI

  3. Nov 1 · 13d ago

    Removed technology: Google Font APIFeatures

    Google Font API→—

  4. Nov 1 · 13d ago

    Homepage title changed to “regex101: Online Regex Tester, Builder, Converter & Debugger”Positioning

    regex101: build, test, and debug regex→regex101: Online Regex Tester, Builder, Converter & Debugger

Design

First-screen visual analysis & :root CSS

Minimal Monochrome (Light canvas, dense density) featuring full-bleed canvas / video / 3d layout and interactive hero demo / tool visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“Regular Expressions 101”

Full-Bleed Canvas / Video / 3D hero structure paired with direct input / instant try CTA and no explicit trust bar.

Conversion path: Full-Bleed Canvas / Video / 3D + Interactive Hero Demo / Tool → Direct Input / Instant Try

Palette · click to copy

5-D design score6.1 / 10
Typography
6.0
Color & Contrast
6.0
Layout & Spacing
7.0
Craft & Polish
6.0
Distinctiveness
5.0

Structure

Fonts
Segoe UI
Primary visual
Interactive Hero Demo / Tool
Social proof
No Explicit Trust Bar
Navigation
Full-Width Top Bar
Theme & density
Light · Dense
Corners & depth
Small Radius · Hairline borders
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Minimal Monochrome

Monochrome palette with a single accent color, hairline dividers, and generous whitespace.

## Design Tokens

```css
:root {
  --background: #f4f5f7;
  --surface: #ffffff;
  --foreground: #2c333a;
  --muted-foreground: #8a9199;
  --accent: #2a5a8a;
  --radius: 4px;
  --font-heading: "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Segoe UI", ui-sans-serif, system-ui, sans-serif;
}
```

Color area ratio: Background #F4F5F7 (~30%) · Surface #FFFFFF (~46%) · Text #2C333A (~10%) · Muted Text #8A9199 (~8%) · Accent #2A5A8A (~6%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Full-Bleed Canvas / Video / 3D
- Navigation: Full-Width Top Bar
- Theme & density: Light · Dense
- Border radius & elevation: Small Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Interactive Hero Demo / Tool
- Conversion CTA: Direct Input / Instant Try
- Headline hook: Category Positioning Anchor
- Hero components: Interactive Hero Tool
- Spatial layout notes: Full-Bleed Canvas / Video / 3D hero structure paired with direct input / instant try CTA and no explicit trust bar.
- Visual summary: Minimal Monochrome (Light canvas, dense density) featuring full-bleed canvas / video / 3d layout and interactive hero demo / tool visuals.

## Avoid

- Multi-stop neon gradients
- Heavy drop shadows
- More than one competing accent color

Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.

Questions & evidence

How much website traffic does Regex 101 get?
Vaneform estimates 461.8K website visits in 2026-09. Visits can include repeat visits; this estimate does not measure paying customers or revenue.Source

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