PNG to Base64 Converter

Drag and drop your image file or click to browse on this page. The encoder instantly generates a Base64 string. Choose output as raw Base64, a full data URI, an HTML embed code, or a CSS background snippet.

Use the Image to Base64 converter at base64toimagefree.com. Upload any image up to 10 MB and get the encoded string in seconds. It works as a png to base64, jpg to base64, and jpeg to base64 converter — the tool auto-detects your file type. Everything runs locally with no server upload.

Upload your image file to this page. The tool reads the file using the browser FileReader API and outputs the Base64-encoded string. Click Copy to paste it into your code, API payload, HTML email, or database. You can also copy the full data URI format ready for inline use.

Yes. Base64 encoding is fully reversible — it is not encryption. Decoding Base64 restores the original binary data exactly. Our Base64 to Image tool reverses the encoding by decoding the string and rendering the original image file. Format conversion (e.g. PNG to JPEG) is a separate optional step on our format converter page.

Manually, you can use command-line tools: base64 image.png on Linux/macOS, or PowerShell [Convert]::ToBase64String() on Windows. In code, use btoa() in JavaScript or language-specific Base64 libraries. For a faster no-code option, upload your image to our Image to Base64 converter and copy the result instantly.

A Base64 image is binary image data encoded as a text string using Base64 encoding. It is commonly used in JSON APIs, HTML emails, CSS, and data URIs (data:image/png;base64,...). Base64 is encoding, not encryption — it can be fully decoded back to the original image file.

Raw Base64 is just the encoded string. A data URI adds a prefix with the MIME type, like data:image/jpeg;base64,/9j/4AAQ.... Our tool accepts both formats. Use our data URI to image converter if you specifically work with data:image/... strings.

Common causes: invalid characters in the string, missing or incorrect data URI prefix, truncated/corrupted data, or wrong MIME type. Ensure the string contains only valid Base64 characters (A–Z, a–z, 0–9, +, /, =). Paste the full string and check for extra whitespace or line breaks. Our decoder shows a clear error if the input is invalid.

Our tool supports files up to 10 MB for image-to-Base64 encoding. For Base64-to-image decoding, the decoded image must also be within 10 MB. Larger strings may slow down your browser because all processing happens client-side on your device.

In JavaScript, set an image source to a data URI: img.src = "data:image/png;base64," + base64String. To download, convert Base64 to a Blob using atob() and Uint8Array, then create an object URL. Our online tool does this instantly without writing code — paste, preview, and download.

Use an img tag with a data URI: <img src="data:image/png;base64,YOUR_STRING" alt="description">. After encoding your image on our Image to Base64 page, switch to the HTML output tab and copy the ready-made tag. Base64 images work in HTML email but increase page size — use for small icons only.

Set a background image: background-image: url("data:image/png;base64,YOUR_STRING");. Our encoder provides a CSS output tab with the full property ready to paste. This technique is useful for small icons and sprites in stylesheets.

Base64 encoding is safe — it is not encryption and does not hide data. Anyone can decode it. Do not use Base64 to protect sensitive images. Our tool processes everything locally in your browser, so your images and strings are never uploaded to our servers.

Paste your Base64 string into our Base64 to PNG converter, select PNG as the output format, and click Convert. You can also decode on the base64 to image page and download directly if the source is already PNG.

Upload your PNG file to our PNG to Base64 converter or the general image to base64 tool. The encoder auto-detects PNG format and outputs the Base64 string, data URI, HTML, or CSS format you need.