Encode JavaScript text as UTF-8 Base64 or decode Base64 back into JavaScript source text, all locally in your browser.
Last updated: August 2026 | By Workshelve Team
Converted output will appear here...
Input
0 chars
Output
0 chars
Bytes
0
Base64 vs bytes
0.0%
The converter encodes JavaScript source as UTF-8 bytes first, so emoji, accents, and non-ASCII code all round-trip correctly.
Base64 is a transport-friendly text encoding. It does not encrypt or protect JavaScript content.
This is handy when JavaScript snippets need to travel through JSON, forms, environment values, or plain-text payloads.
Base64 does not operate on JavaScript syntax directly. The source text is first converted into UTF-8 bytes, and those bytes are then encoded into the Base64 alphabet.
On decode, the process reverses: the Base64 text becomes bytes again, and those bytes are decoded as UTF-8 to recover the original JavaScript text.
Because the converter uses UTF-8 explicitly, it handles modern source text safely instead of assuming plain ASCII.
Related Tools
Build and preview Valorant crosshair settings.
Search common Vim commands.
Turn JSON rows into bar, line, or pie charts.
Convert WebP files and Base64 data in both directions.
Convert GIF files into Base64 text or data URLs.
Convert the first GIF frame into a JPG image.