Image to Base64 Converter

The Image to Base64 Converter encodes PNG, JPEG, GIF, WebP, SVG, BMP, ICO, and AVIF files directly into Base64 strings and data URIs — right in your browser. Drag in one image or a whole batch, pick an output format (raw Base64, data URI, <img> tag, CSS background, or Markdown), and copy or export the result for embedding in HTML, CSS, JSON payloads, or email templates.

• •Drag-and-drop batch upload: convert one image or dozens at once, up to 10 MB per file
• •Five output formats: raw Base64, full data URI, ready-to-paste <img> tag, CSS background-image rule, or Markdown image syntax
• •Automatic MIME type detection from the uploaded file, embedded correctly in the data URI prefix
• •Optional MIME-style line wrapping (76 characters) for compatibility with email clients and legacy parsers
• •Per-image stats: original file size, encoded Base64 size, and pixel dimensions, so you can see the ~33% size increase before you embed it
• •Bulk export to TXT, JSON, HTML, CSS, or a ZIP archive — runs entirely client-side, your images are never uploaded to a server

• •Embedding a small icon or logo directly in HTML/CSS as a data URI to save an HTTP request
• •Generating a JSON API payload or config file that carries image data inline instead of a separate URL
• •Building an email signature or transactional email template with an inlined image, since many email clients block external image loads
• •Producing CSS background-image data URIs for a design system or icon sprite alternative
• •Batch-encoding a set of screenshots or thumbnails for documentation that must ship as a single self-contained file

1. 1.Drag and drop an image (or several) into the upload zone, or click Browse Files
2. 2.Choose the output format: raw Base64, data URI, <img> tag, CSS background, or Markdown
3. 3.Toggle line breaks on if you need MIME-style 76-character wrapping
4. 4.Copy the result for a single image, or use Export All to download every converted image as TXT, JSON, HTML, CSS, or ZIP

• •Base64 encoding inflates file size by roughly 33% — a 300 KB PNG becomes a ~400 KB string, which matters for large batches embedded inline
• •SVG files are already text-based; encoding them to Base64 is rarely smaller than just inlining the raw SVG markup
• •Files over the 10 MB per-file limit are rejected with an error rather than silently truncated
• •AVIF and some ICO variants may not render identically across every browser, even though the Base64 encoding itself is correct

• •No server-side resizing or compression happens before encoding — pre-optimize large images if you need a smaller output string
• •Very large batches (many large files at once) can strain browser memory since everything is held and encoded client-side
• •ZIP export re-bundles the original files; it does not re-compress or convert formats

If you already have a Base64 string or data URI — from an API response, a CSS file, or a saved config — and need to view or download it as an actual image file, use the Base64 to Image Converter instead. It detects the MIME type automatically and lets you preview and download the decoded image.