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Encode text, images, and files to Base64 — or decode any Base64 string — all in your browser with zero uploads.
Base64 is a way of representing binary data as ASCII text using 64 printable characters. It's widely used to embed images in HTML/CSS, transmit binary data in JSON, and carry credentials in HTTP headers.
Standard Base64 uses + and / characters. Base64URL is a URL-safe variant that replaces + with - and / with _ (and often omits padding =), so the output is safe to put in URLs and JWTs.
No. All encoding and decoding runs entirely in your browser. Text, images, and files you paste or drop here never leave your tab.
Base64 represents every 3 input bytes as 4 output characters, so the output is roughly 4/3 of the input — about 33% larger. That overhead is the trade-off for ASCII-safe transport.
Yes. Drop or select any file and it is encoded to a Base64 string or a ready-to-use data URI. It works for images, PDFs, and other binary files, and every byte is processed in your browser.
CODERCOPS builds production APIs, file storage systems, and data pipelines for startups and enterprises.