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- Free
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- Works on any device
Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
- Free
- No sign-up
- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
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Regex explainer
Explain any regular expression in plain English, piece by piece.
- Free
- No sign-up
- Works on any device
About Regex explainer
Paste a regular expression and read it as plain English, piece by piece: anchors, groups, character classes, quantifiers and lookaheads. It is ideal for understanding a pattern found in old code. For instance, a digit class followed by the number three means exactly three digits, and the caret ties the match to the start.
How to use Regex explainer
- Type or paste your text in the box above.
- The result appears instantly as you type.
- Copy the result or download it as a file.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
What does ^ and $ mean in a regex?
The caret anchors the match to the start of the text and the dollar sign to the end, so the whole string must fit the pattern.
Is Regex explainer free?
Yes. Regex explainer on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.