Encoding & Decoding Tools

Encoding and decoding are daily developer tasks — whether you're inspecting a JWT, sanitizing a URL, or converting binary payloads. Every tool on this page runs entirely in your browser, so your data is never sent to a server.

• Base64 EncoderEncode plain text or binary data to a Base64 string instantly — supports full UTF-8.
• Base64 DecoderDecode a Base64 string back to plain text — handles standard and UTF-8 Base64.
• URL EncoderPercent-encode a string so it is safe to use in URLs, query strings, and API requests.
• URL DecoderDecode percent-encoded (URL-encoded) strings back to readable text — handles full UTF-8.
• JWT DecoderDecode JSON Web Tokens (JWT) headers and payloads.
• HTML Entity EncoderConvert special characters (&, <, >, ") to safe HTML entities — prevents XSS attacks.
• HTML Entity DecoderDecode HTML entities (&amp;lt;, &amp;amp;, &#169;) back to their original characters.
• Text to UnicodeConvert any text to Unicode code points in U+XXXX format — supports emoji and all scripts.
• Unicode to TextConvert Unicode code points (U+XXXX) back to readable text — supports the full Unicode range including emoji.
• Text to BinaryConvert plain text to 8-bit binary (0s and 1s) — one byte per character, space-separated.
• Binary to TextDecode binary (8-bit groups of 0s and 1s) back to readable ASCII text.
• JSON Escape / UnescapeEscape special characters in JSON strings or unescape them.
• HTML Tag RemoverStrip all HTML tags from text, leaving only plain content.
• ROT13 Encoder / DecoderApply ROT13 cipher to text — works as both encoder and decoder.
• HTML Entity ConverterConvert special characters to named HTML entities (&amp;, &lt;, &copy;) and back.
• Unicode Escape GeneratorConvert text to \uXXXX Unicode escape sequences and decode them back.
• URL Slug GeneratorConvert any title or text into a clean, SEO-friendly URL slug.
• Image → Base64 ConverterDrag and drop any image (PNG, JPG, WebP, SVG, GIF) to get the Base64 data URI and raw Base64 string. Use directly in HTML img src, CSS background-image, or JSON APIs. File stays in browser.
• Base64 → Image PreviewPaste a Base64 string or data URI to decode and preview the image instantly. Auto-detects MIME type from the binary signature. Supports PNG, JPEG, GIF, WebP, SVG, and BMP.