{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-05-20T20:47:38.221Z","discovery":{"catalog":"https://toolsly.tools/tools.json","llmsTxt":"https://toolsly.tools/llms.txt","sitemap":"https://toolsly.tools/sitemap.xml"},"relatedTools":[{"slug":"qr-code-reader","name":"QR Code Reader","url":"https://toolsly.tools/qr-code-reader"},{"slug":"qr-code-generator","name":"QR Code Generator","url":"https://toolsly.tools/qr-code-generator"},{"slug":"file-to-hex","name":"File to Hex Dump","url":"https://toolsly.tools/file-to-hex"},{"slug":"hex-to-file","name":"Hex to Binary File","url":"https://toolsly.tools/hex-to-file"},{"slug":"wifi-qr-code-generator","name":"Wi-Fi QR Code Generator","url":"https://toolsly.tools/wifi-qr-code-generator"},{"slug":"vcard-qr-code-generator","name":"vCard QR Code Generator","url":"https://toolsly.tools/vcard-qr-code-generator"},{"slug":"barcode-generator","name":"Barcode Generator","url":"https://toolsly.tools/barcode-generator"},{"slug":"base64-encode","name":"Base64 Encode","url":"https://toolsly.tools/base64-encode"}],"kind":"utility","slug":"regex-tester","name":"Regex Tester","description":"Test a JavaScript regular expression against sample text — see matches, groups, and a replacement preview.","longDescription":"Type a regex pattern and flags, paste some test text, and instantly see every match with its index and captured groups. Optionally supply a replacement string to preview what String.replace would produce. Compiled with the standard JavaScript RegExp engine and run entirely in your browser.","category":"text","categoryName":"Text & Encoding","keywords":["regex tester","regular expression tester","regex matcher","regex playground","javascript regex tester","regex tool","regex online","regex free","regex replace tester","regex group viewer","regex debugger","regex evaluator","regex match preview"],"badge":"Tester","url":"https://toolsly.tools/regex-tester","inputs":[{"type":"text","key":"pattern","label":"Pattern","placeholder":"(\\w+)@(\\w+)","monospace":true},{"type":"text","key":"flags","label":"Flags","defaultValue":"g","placeholder":"g, i, m, s, u, y","monospace":true},{"type":"text","key":"testText","label":"Test text","placeholder":"ada@example.com bob@test.org","multiline":true,"monospace":true},{"type":"text","key":"replacement","label":"Replacement (optional)","placeholder":"$1 at $2","monospace":true}],"outputs":[{"key":"matches","label":"Matches","multiline":true},{"key":"totalMatches","label":"Total matches"},{"key":"replacementPreview","label":"Replacement preview","multiline":true}],"invocation":{"webUi":"https://toolsly.tools/regex-tester","api":null,"notes":"Currently invoked via the web UI at `webUi`. Inputs are form fields; outputs are structured text values. A remote MCP/REST API is planned."}}