Base64 Decoder
Decode Base64 strings back to text, images, or files β 100% client-side
Decoded image, audio, or file will appear here
How to Use Base64 Decoder
Decode Base64 strings back to original text, images, and files β complete guide
β‘ Decode Base64 in 3 Simple Steps
Paste Base64 String
Copy your Base64 encoded string and paste it into the input area. Works with text, images, audio, and any file type.
Choose Mode
Select Text Decode for plain text output, or Image/File Decode to preview images, play audio, or download files.
Decode & Use
Click Decode to convert. View decoded text, see images, play audio, or download files β all client-side.
Base64 decoding reverses the encoding process, converting Base64 strings back into their original binary form. This is essential for retrieving embedded images, decoding API responses, restoring file attachments, and working with data URIs.
Common use cases include: extracting images from HTML/CSS, decoding email attachments, retrieving files from JSON APIs, restoring binary data from databases, and debugging encoded data. Base64 decoding is supported across all programming languages and platforms.
Our free Base64 decoder tool works entirely in your browser β no data is ever sent to any server. Your decoded content stays private and secure on your device.
β Everything You Need to Know About Base64 Decoding
Base64 decoding converts Base64 strings back into original text, images, or files. You need it when you receive Base64 data from APIs, decode embedded images from HTML/CSS, extract email attachments, or retrieve binary data from JSON responses. It's the reverse of Base64 encoding.
Absolutely! Paste your Base64 image string into the Image/File Decode tab, click decode, and the image will appear instantly. The tool automatically detects PNG, JPG, GIF, and WebP formats. You can then download or copy the decoded image.
Yes! Our Base64 decoder can decode audio files β paste your audio Base64 string, and the tool will display an audio player. You can play the audio directly in your browser or download it. Supports MP3, WAV, OGG, and other common formats.
100% safe! Our Base64 decoder works entirely in your browser using JavaScript. No data is ever sent to any server β your encoded strings and decoded content stay on your device. Perfect for sensitive data, private documents, and confidential images.
You can decode any file type β images (PNG, JPG, GIF, SVG, WebP), audio (MP3, WAV, OGG), video, PDFs, documents, and more. The tool will preview images and audio when possible, or offer a download option for other file types.
This error appears when your input isn't valid Base64 format. Common causes: missing characters, incorrect padding, or non-Base64 characters. Make sure you've copied the complete Base64 string and that it hasn't been truncated or corrupted during copying.
100% free β no signup required! There are no hidden fees, no premium tiers, no watermarks. Decode unlimited Base64 strings, images, and files. We believe essential developer tools should be accessible to everyone.