Base64 to File Online
Base64转文件Data URL文件下载解码
Paste a base64 or Data URL string to auto-detect file type and size, set a custom name and download the restored file. Ideal for file forensics and API payload analysis, fully local.
All processing is done locally in your browser. No data is uploaded.
How to Use
- Paste any valid JSON, supports nesting, arrays and escapes
- Click Beautify to auto indent and format
- Click Minify to remove whitespace into one line
- All operations run locally for privacy
Related Tools
FAQ
Which input formats are supported?
Standard Data URLs (data:type;base64,xxx) and raw base64 strings; raw input is sniffed by magic bytes for common types.
How is the file type detected?
The MIME from the Data URL takes priority; for raw base64, magic numbers of PNG, JPEG, GIF, PDF, ZIP and more are recognized automatically.
Will my data be uploaded?
No, parsing and downloading run entirely in your browser.