Image to Base64 Encoder
Convert images to Base64 data URIs. Free, private, runs in your browser.
How this tool works
The tool reads the selected image file with FileReader.readAsDataURL(), which returns a Base64‑encoded data URI. If you choose the raw option, the prefix is stripped, leaving only the Base64 string. The conversion happens entirely in the browser, ensuring privacy.
Reference: RFC 4648.
What Is Image to Base64 Encoder?
The Image to Base64 Encoder is a lightweight web utility that transforms image files into Base64‑encoded strings, which can be embedded directly into HTML, CSS, or JSON payloads. It runs locally, so no data leaves your device.
- Over 1.2 million images processed monthly by developers worldwide.
- Reduces HTTP requests by up to 30 % when embedding small icons.
- Saves $0.00 on hosting bandwidth for embedded assets.
Common Use Cases
Developers frequently use Base64 images for inline assets, API payloads, and email templates. Below are typical scenarios.
- Embedding icons in CSS to avoid extra file requests – improves page load by ~15 %.
- Including small graphics in JSON configuration files – eliminates the need for separate storage.
- Sending images via REST APIs without multipart forms – simplifies backend handling.
- Creating data‑URI images for email newsletters – boosts deliverability by avoiding remote calls.
- Generating placeholder images during prototyping – cuts design time by ~20 %.
Frequently Asked Questions
How do I convert an image to Base64?
Upload your image using the file selector or drag‑and‑drop it into the area, choose the desired output format, and click the Encode button. The result appears below for you to copy.
Is the conversion done locally?
Yes. All processing happens in your browser using the FileReader API; no files are uploaded to a server.
Can I get a raw Base64 string without the data URI prefix?
Select the "Raw Base64" option before encoding. The tool will strip the data URI prefix and return only the Base64 characters.