Free Base64 / URL Codec — Encode & Decode Online
Free online Base64 and URL codec. Encode and decode text or files in your browser with live conversion — no uploads.
About Free Base64 / URL Codec — Encode & Decode Online
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. It is completely free and runs entirely online — just open the page and start using it.
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 Free Base64 / URL Codec — Encode & Decode Online
- 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.