Free online Base64 encoder and decoder tools. Encode text or images to Base64 format and decode Base64 back to readable text or viewable images.
Base64 encoding is everywhere in modern web development. It's how email attachments work, how small images are embedded directly in CSS and HTML, and how binary data gets transmitted in REST APIs and JSON. Understanding it — and having a quick tool to encode/decode — saves time in countless situations.
Base64 Encoder & Decoder
Our Base64 Encoder and Base64 Decoder handle the core task: convert any text to Base64 and back. Just paste your content and the conversion happens instantly.
Base64 to Image & Image to Base64
Two more specialised tools round out the collection:
- Base64 to Image — Paste a Base64 data string and preview the image it represents
- Image to Base64 — Upload any image and get its Base64 string, ready to embed in HTML, CSS, or JSON
These are particularly handy when you're working with email templates (where images must be embedded), generating dynamic images in API responses, or optimising page load by inlining small icons as Base64 data URIs.