Base64 / URL Codec
Encode and decode Base64 and URLs — text or files — in your browser. Live conversion with no uploads.
About Base64 / URL Codec
Base64 / URL Codec encodes and decodes Base64 and URL-encoded strings in real time. Convert text, turn any file into a Base64 string, or encode and decode URL components. It handles international characters correctly and runs entirely in your browser, so nothing you paste is ever uploaded.
Features
- Encode and decode Base64 for text
- Convert any file into a Base64 string, with image preview
- URL-encode and URL-decode strings
- One-click swap to feed the output back as input
- Live conversion with copy to clipboard
How to use Base64 / URL Codec
- 1Choose Text, File, or URL mode.
- 2Pick the encode or decode direction.
- 3Type or paste your input, or drop in a file.
- 4Copy the converted result from the output box.
Frequently asked questions
- Is my data uploaded?
- No. All encoding and decoding happens in your browser, so nothing is sent to a server.
- Can I Base64-encode a file?
- Yes. In File mode, any file is converted to a Base64 string, and images show a live preview.
- Does it handle non-English characters?
- Yes. Accents and other scripts are encoded and decoded correctly.