Encoding Tools

Free online encoding tools — Base64, URL, HTML, and Unicode encoders and decoders that run entirely in your browser, no uploads.

ASCII Converter

Convert text to ASCII decimal or hex codes, or decode ASCII numbers back to characters. Free, instant, and runs 100% in your browser.

Base64 File Encoder & Decoder

Free online Base64 file encoder and decoder. Drop any file — image, PDF, or font — to get its Base64 string and data URI for embedding in CSS, HTML, or JSON, or decode Base64 back into a downloadable file. 100% in your browser.

HTML Decoder

Free online HTML decoder. Convert HTML entities back to plain text instantly. Fast, private decoding that runs 100% locally in your browser.

HTML Encoder

Free online HTML encoder. Convert special characters to HTML entities instantly to prevent XSS. Safe and fast, runs entirely in your browser.

JWT Decoder Online - Decode JSON Web Tokens Instantly

Use our secure JWT decoder to instantly decode and inspect JSON Web Tokens in your browser. View the header, payload, and claims without server uploads.

Unicode Converter

Convert text to Unicode escape sequences like \uXXXX, or decode escapes back to plain text. Fast, free, and runs entirely in your browser.