Free online image to Base64 converter. Encode images to Base64 data URIs for embedding directly in HTML, CSS, or JavaScript. Supports JPEG, PNG, GIF, WebP, and SVG formats with drag-and-drop upload. Perfect for reducing HTTP requests and creating self-contained web pages. 100% browser-based.
100% browser-based — your data never leaves your device
Convert images to Base64 data URIs and decode Base64 strings back into viewable/downloadable images.
Click to upload or drag & drop an image
PNG, JPG, GIF, SVG, WebP, BMP
Choose a mode
Select 'Encode' to convert an image to Base64, or 'Decode' to convert Base64 back to an image.
Upload or paste
Upload an image file to encode, or paste a Base64 data URI to decode.
Copy or download
Copy the Base64 string or download the decoded image to your device.
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Image → Base64 is a free online text tool that convert images to base64 data uris and decode base64 strings back into viewable/downloadable images. It works entirely in your browser — no downloads, no installations, and no server uploads required. content writers, developers, technical writers use Image → Base64 when they need a fast, privacy-respecting way to process text data without installing additional software. It supports capabilities such as image to base64, base64 to image, preview. Additional features include copy & download. Common use cases include embedding small images as base64 data uris in html and css for faster page loads, converting images to base64 for transmission in json apis and data formats, decoding base64 image data from api responses for preview and download. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes Image → Base64 ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
Image to Base64 & Base64 to Image is a free online text tool that helps you convert images to base64 data uris and decode base64 strings back into viewable/downloadable images. Key capabilities include image to base64, base64 to image, preview. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to embedding small images as base64 data uris in html and css for faster page loads.
Select 'Encode' to convert an image to Base64, or 'Decode' to convert Base64 back to an image.
Upload an image file to encode, or paste a Base64 data URI to decode.
Copy the Base64 string or download the decoded image to your device.
| Category | Details |
|---|---|
| Input Limits | Maximum input length: Browser memory bound |
| Encoding support: UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252 | |
| Supported Formats | Plain text, UTF-8, ASCII, Unicode, Percent-encoding (RFC 3986) |
| Browser Engine |
|
All operations run entirely in your browser using built-in Text APIs. No server uploads, no data storage, and no third-party requests.
Image → Base64 is ideal when you need to embedding small images as base64 data uris in html and css for faster page loads without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for advanced text manipulation within an IDE, consider using VS Code. For for batch text processing on servers, sed/awk (command-line) may be a better fit. Image → Base64 fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. Image → Base64 processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
A data URI embeds the image data directly as a Base64-encoded string in the format: data:image/png;base64,... This allows embedding images directly in HTML, CSS, or JavaScript without separate HTTP requests.
Since all processing happens in your browser, the limit depends on your device's memory. Typical practical limits are 10-50MB.
Upload any image (PNG, JPG, GIF, SVG, WebP) and get its Base64 data URI instantly.
Paste a Base64 data URI and view or download the decoded image.
See a live preview of the encoded or decoded image.
Copy the Base64 string to clipboard or download the decoded image file.
Image to Base64 & Base64 to Image is useful in a variety of scenarios across different workflows:
Embedding small images as Base64 data URIs in HTML and CSS for faster page loads
Converting images to Base64 for transmission in JSON APIs and data formats
Decoding Base64 image data from API responses for preview and download
Base64 encoding increases image size by ~33%. Only use data URIs for small images (under 10KB). For larger images, serve them as separate files for better performance.
A valid image data URI starts with 'data:image/[format];base64,' followed by the Base64 string. The tool generates this format ready for use in HTML src attributes.
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