Convert images to data URI strings. Developer Utility.
Support JPG, PNG, GIF, SVG
Base64 strings are larger than binary files. Use for small icons/logos only.
GKPTool Base64 Encoder allows you to convert images into Base64 encoded strings instantly. You can encode JPG, PNG, GIF and SVG images into text-based Base64 format that can be used directly in HTML, CSS or APIs.
This tool is mainly used by developers who want to embed images directly inside code without uploading separate image files.
Base64 encoding converts binary image data into readable text. This text can be safely transmitted through JSON, HTML, CSS or APIs without breaking formatting or causing data corruption.
Base64 encoded images usually start with:
data:image/png;base64,
GKPTool provides multiple output options so you can copy exactly what you need:
Base64 encoding increases image size by approximately 33%. Because of this, Base64 is recommended only for small images such as logos, icons and UI elements.
Large photos should always be used as normal image files.
All encoding happens directly inside your browser using JavaScript. Your images are never uploaded to any server, ensuring complete privacy and security.
Is Base64 encoder free?
Yes, this tool is completely free without limits.
Can I convert image to Base64 online?
Yes, simply upload your image and copy the encoded string.
Is my image uploaded to server?
No. All processing happens locally inside your browser.
Which format is best for Base64?
PNG is commonly used for transparency, JPG for smaller size.
Does it work on mobile?
Yes, it works smoothly on Android and iPhone.