The regex quiz is an interactive way to sharpen your understanding of regular expressions through progressively harder challenges. Each task gives you a problem to solve, then lets you compare your result with other solutions and keep improving from there. It is evaluated with the PCRE2 engine, so it is a practical way to learn useful structures while testing your thinking against real constraints.
To access the quiz, you will need a free account. It also gives you the full regex101 experience, including saved workspaces, favorites, titles and tags, and privacy controls for what you share. Upgrading to Pro supports the project, removes sponsor placements, and expands the paid feature set over time. Review the plans below for details, and continue when you are ready.
| Feature | Free€0 | Pro€4.99 per month (billed yearly) | EnterpriseCustom |
|---|---|---|---|
| General | |||
| Community Library access | Included | Included | Included |
| Regex quiz access | Included | Included | Included |
| MCP access | Partially included | Included | Optional add-on |
| Regex explanation API | Not included | Included | Optional add-on |
| Ad-free workspace | Not included | Included | Included |
| Editor | |||
| Core regex101 editor | Included | Included | Included |
| Syntax highlighting and explanation | Included | Included | Included |
| Debugger, code generator, and unit tests | Included | Included | Included |
| Regex Intellisense | Partially included | Included | Included |
| Custom color schemes | Not included | Included | Included |
| Multiple Test Strings | Not included | Included | Included |
| Copy regex explanations | Not included | Included | Optional add-on |
| Multi-layer substitution pipelines | Not included | Included | Optional add-on |
| Advanced Regex Benchmarking | Not included | Included | Included |
| Format Regex | Not included | Included | Included |
| File Support | |||
| Single binary and text file loading | Included | Included | Included |
| GZIP, PDF, DOCX, and ODT file parsing | Not included | Included | Optional add-on |
| Multiple files: join them or create separate test strings | Not included | Included | Optional add-on |
| Password-protected PDFs | Not included | Included | Optional add-on |
| Private in-browser processing | Included | Included | Included |
| Account | |||
| Saved workspaces | Included | Included | Included |
| Titles, tags, and favorites | Included | Included | Included |
| Privacy controls | Included | Included | Included |
| Enterprise | |||
| Private self-hosted deployment | Not included | Not included | Included |
| Air-gapped deployment support | Not included | Not included | Included |
| Data stays within your infrastructure | Not included | Not included | Included |
| Custom OAuth single sign-on | Not included | Not included | Included |
| Licensing, procurement, and rollout guidance | Not included | Not included | Included |