URL transformation
URL Encode / Decode
Encode or decode URLs, query strings, and parameter values directly in the browser.
Encode and decode URL strings directly
Paste a URL, query string, or parameter value, then transform it locally in one step.
- 1Paste the URL or query fragment you want to inspect.
- 2Choose Encode or Decode depending on the direction you need.
- 3Copy the result and continue your request, redirect, or debugging flow.
Try another quick utility next
ASN.1 Lens
Binary inspectionInspect BER and DER structures directly in the browser with format detection, a readable tree view, and zero server round-trips.
Base64 Encode / Decode
Base64 transformationConvert UTF-8 text to and from Base64 locally in the browser without losing Unicode characters.
HTML Entity Encode / Decode
HTML transformationEscape or unescape HTML entities such as <, >, &, quotes, and apostrophes without leaving the page.
JSON Decode Tree
JSON inspectionParse JSON into an expandable tree, unwrap JSON string layers, and decode nested fields locally in the browser.
GUID / UUID Generator
Identifier generationGenerate batches of UUID v4 values in the browser with flexible formatting, Base64 variants, and copy-ready output.
2FA / TOTP Code Generator
2FA generationGenerate 2FA codes locally in your browser, import otpauth QR images, and keep shared secrets off third-party services.
Vietnamese Lunar Calendar
Calendar referenceView a Gregorian month alongside the Vietnamese lunar calendar, convert dates both ways, and inspect Can Chi details directly in the browser.
English Pronunciation Tool
Pronunciation learningLook up a word or phrase, then open Oxford, Cambridge, YouGlish, and Google Translate quickly from one place.