Developer Tools

Image to Base64 Converter - Free Online Tool

Convert images to Base64 strings online instantly, supporting PNG, JPG, GIF, WebP, SVG, and BMP. Free, secure, client-side processing, no upload.

Upload Image

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Drag & Drop or Click to Upload

Supports PNG, JPG, GIF, WebP, SVG, BMP

Base64 Output

Base64 string will appear here...

Copy

Base64 string will appear here...

How to Convert Image to Base64

01

Upload your image by dragging and dropping or clicking the upload area.

02

The tool will instantly convert your image to a Base64 string.

03

Copy the raw Base64 string or the Data URI format for use in HTML/CSS.

04

Use the generated string to embed images directly in your code.

Key Features

Instant Conversion

Convert images to Base64 instantly without server uploads.

Privacy First

All processing happens locally in your browser. Your images never leave your device.

Supports All Formats

Compatible with PNG, JPEG, GIF, SVG, WebP, and BMP formats.

Data URI Ready

Get the complete Data URI string ready for use in HTML <img> tags or CSS background-image.

FAQ

Why convert image to Base64?

Converting images to Base64 allows you to embed them directly into HTML or CSS files, reducing the number of HTTP requests and speeding up page load times for small images.

Is there a file size limit?

Since processing is done in your browser, the limit depends on your device's memory. However, it's recommended to use Base64 only for small images (icons, logos) to avoid bloating your HTML file size.

Does quality loss occur?

No, Base64 encoding is lossless. The decoded image will be identical to the original.

Drop or select any image and this tool instantly encodes it into a Base64 string, outputting both the raw Base64 text and a ready-to-paste data URI (data:image/png;base64,...). It supports PNG, JPG, GIF, WebP, SVG, and BMP, and runs entirely in your browser so your files are never uploaded to a server.

How to Convert an Image to Base64

  1. 1

    Upload your image

    Drag and drop a file onto the upload area or click to browse. PNG, JPG, GIF, WebP, SVG, and BMP are all supported.

  2. 2

    Get the encoded output

    The tool reads the file locally and instantly produces the Base64 string—no server round trip.

  3. 3

    Choose raw or data URI

    Copy the raw Base64 text for JSON payloads, or copy the full data URI string for use in HTML <img> tags and CSS background-image.

  4. 4

    Embed it in your code

    Paste the data URI directly into your markup or stylesheet to inline the image and save an HTTP request.

References

Related Tools

Base64 to Image

Decode a Base64 string or data URI back into a downloadable image file.

Base64 Encode / Decode

Encode or decode any text or data to and from Base64.

Tiny Image

Compress images first to keep your Base64 output and HTML file size small.

WebP Converter

Convert images to the lightweight WebP format before encoding.

Frequently Asked Questions

Why convert an image to Base64?
Converting images to Base64 lets you embed them directly into HTML or CSS files, reducing the number of HTTP requests and speeding up page load times for small images.
Is there a file size limit?
Since processing is done in your browser, the limit depends on your device's memory. However, it's recommended to use Base64 only for small images (icons, logos) to avoid bloating your HTML file size—Base64 output is roughly 33% larger than the original binary.
Does converting to Base64 cause quality loss?
No, Base64 encoding is lossless. The decoded image is byte-for-byte identical to the original file.
What is the difference between raw Base64 and a data URI?
Raw Base64 is just the encoded character string. A data URI wraps it with a prefix like data:image/png;base64, that tells the browser the MIME type, making it ready to paste into an <img> src or CSS background-image.
Are my images uploaded to a server?
No. All encoding runs locally in your browser using the FileReader API, so your images never leave your device.