Base64 to File

📂 Decode any Base64 string into a downloadable file — supports ZIP, PDF, MP4, PNG, RAR, DOCX, MP3 and every other file type.

✅ 100% Free🔓 No Login Required🔒 Runs In Browser

Auto File Type Detection

50+ Supported Formats

Data URI Support

Supported File Categories

Documents(pdf, docx, doc, xlsx, xls, pptx, txt, rtf, csv)

Images(jpg, png, gif, webp, svg, bmp, tiff)

Archives(zip, rar, 7z, tar, gz, bz2)

Audio(mp3, wav, ogg, flac, aac, m4a)

Video(mp4, mov, avi, mkv, webm, mpeg)

Code(json, xml, html, css, js, sql, sh)

Base64 Input

0 chars

📄 Output File Name

⚙️ File Extension

Popular formats

Use Custom Extension

Decode Status

Paste your Base64 string
and hit Decode & Download

💡 How to get a Base64 string?

• Use our Image to Base64 or Base64 Encode tools
• Copy from a data URI in your browser DevTools
• Export from your API or database that stores Base64 encoded files
• Use email attachments decoded via Base64

🔧 How It Works

Decode any Base64 string into a real downloadable file in seconds

Paste Base64 String

Paste your raw Base64 or data URI string into the input box — the tool auto-detects the file type

Set File Name & Type

Choose a file name and confirm or override the detected extension (zip, pdf, mp4, and more)

Download Your File

Click Decode & Download — your browser instantly saves the decoded file to your device

Frequently Asked Questions

Everything you need to know about Base64 to file conversion

Do I need to sign up or log in to use this tool?

No. All QuickTextTools are completely free to use online with no login, signup, or account required.

What file types can I decode from Base64?

Any file type — PDF, ZIP, RAR, 7Z, DOCX, XLSX, MP3, MP4, PNG, JPG, SVG, JSON, XML, HTML, TXT, and more. If your file type isn't in the quick-select list, just type a custom extension.

Does this tool auto-detect the file type?

Yes. If you paste a Base64 Data URI (e.g. data:application/pdf;base64,...), the tool automatically detects the MIME type and pre-fills the correct file extension for you.

What is the difference between a raw Base64 string and a Data URI?

A raw Base64 string is just the encoded data. A Data URI includes a prefix like 'data:image/png;base64,' followed by the encoded data. This tool accepts both formats.

Is my Base64 data sent to any server?

No. All decoding happens entirely in your browser using the built-in atob() API. Your data never leaves your device.

Why is my downloaded file corrupted?

This usually means the Base64 string is incomplete, has extra whitespace in the middle, or is not valid Base64. Make sure you copy the full encoded string without any missing characters.