Paste your Base64 string to see and download the image.
Base64 Decoder by GKPTool allows you to convert Base64 encoded strings back into real image files.
If you have received a long text starting with data:image or a raw Base64 code,
this tool helps you instantly decode it into a viewable image.
The decoded image can be downloaded in formats such as PNG, JPG, GIF or SVG depending on the Base64 data provided.
Base64 is a method of encoding binary data into plain text. It is widely used in web development to embed images directly inside HTML, CSS, JSON APIs and email templates.
When an image is encoded in Base64 format, it becomes unreadable for humans. A Base64 decoder converts this encoded string back into an actual image file.
This tool automatically detects the image type from the Base64 header. If the prefix is missing, GKPTool intelligently identifies the image format and applies the correct data header automatically.
Supported formats include:
All decoding happens directly inside your browser using JavaScript. Your Base64 data is never uploaded to any server.
This makes the tool safe for decoding private images, API responses and sensitive development data.
What is Base64 decoding?
Base64 decoding is the process of converting encoded text back into binary data such as images.
Can I convert Base64 to PNG?
Yes, PNG Base64 strings are fully supported.
Is this Base64 decoder free?
Yes, it is completely free without usage limits.
Is my data uploaded?
No. All processing happens locally in your browser.
Can I use this tool on mobile?
Yes, it works smoothly on Android and iPhone.