New tools
Newly added developer tools on Tools by RS Roshi. See what shipped recently and explore the full catalog.
Base64 Encode / Decode
PopularNewEncode UTF-8 text to Base64 or decode Base64 back to text — instantly in your browser.
URL Encode / Decode
PopularNewPercent-encode text for URLs or decode encoded query strings — private and instant.
JWT Decode
PopularNewDecode JWT header and payload in your browser — inspect claims without uploading tokens.
UUID Generator
PopularNewGenerate UUID v4 identifiers in bulk — uppercase and hyphenless options, fully client-side.
Hash Generator
PopularNewGenerate SHA-1 / SHA-256 / SHA-384 / SHA-512 digests of text with Web Crypto — fully client-side.
Base64 Encode Text
NewEncode plain text notes, messages, and Unicode strings to Base64 in your browser — private and instant.
Base64 Encode JSON
NewEncode JSON payloads to Base64 for APIs, JWTs, and transport — decode back to UTF-8 JSON in your browser.
Base64 Encode HTML
NewEncode HTML fragments and markup to Base64 for data URLs, emails, and embeds — decode back in your browser.
Base64 Encode URL
NewEncode URLs and query strings to Base64 for opaque links and redirects — distinct from percent-encoding.