🖼️ Base64 to Image Converter
Paste a Base64-encoded image string and instantly preview and download the decoded image. Fully client-side — your data never leaves your browser.
Paste Base64 String
Paste a raw Base64 string or a full data URI (e.g. data:image/png;base64,iVBOR...)
📎 Try a sample Base64 image
How to Convert Base64 to Image
- Paste your Base64-encoded image string into the text area above. You can include or omit the
data:image/...prefix. - Click "Decode Image" to process the string.
- Preview the decoded image with format, dimensions and file size info.
- Click "Download Image" to save it to your device.
Where Do Base64 Images Come From?
- HTML/CSS data URIs — images embedded inline in web pages or stylesheets
- API responses — many REST APIs return images as Base64 strings in JSON
- Email attachments — MIME-encoded images in email source
- Databases — images stored as Base64 text in database columns
- Clipboard — screenshots and copied images often encode as Base64
Supported Formats
PNG, JPEG, GIF, WebP, SVG, BMP and any other format your browser can render. The tool auto-detects the format from the data URI prefix or lets the browser infer it from the binary data.
Base64 to Image — Frequently Asked Questions
A Base64-encoded image is the binary data of an image file converted into an ASCII text string using the Base64 encoding scheme. This text representation can be embedded directly in HTML, CSS and JSON without needing a separate image file. The string typically starts with a data URI prefix like "data:image/png;base64," followed by the encoded characters.
This tool supports all common image formats: PNG, JPEG, GIF, WebP, SVG and BMP. It auto-detects the format from the data URI prefix. If no prefix is provided, the tool tries to decode the raw Base64 string and lets your browser determine the format automatically.
No. This tool works entirely in your browser using client-side JavaScript. Your Base64 string is decoded locally and never sent to any server. This ensures complete privacy — your images stay on your device.
Common use cases include: extracting images embedded in HTML emails or CSS files, debugging API responses that return Base64-encoded images, recovering images from data URIs in web pages, and inspecting images stored as Base64 in databases or JSON payloads.
This tool handles Base64 strings of any reasonable size. However, very large strings (over 10 MB of Base64 text, roughly 7.5 MB image) may slow down your browser since decoding happens client-side. For best performance, keep individual image strings under 5 MB of Base64 text.
The Base64 Converter encodes and decodes arbitrary text to/from Base64. This tool is specifically designed for images — it decodes Base64 strings, renders a visual preview, detects the image format, shows file dimensions and size, and lets you download the result as an image file.