Base64 Converter
Encode text or files to Base64, or paste Base64 content with or without a Data URI prefix to inspect it in your browser.
Input
Paste Base64 or drop a file
You'll see text, previewable media, or a file summary here.
How to use the Base64 converter
Paste a value or upload a file, then preview, copy, or download the result.
Paste text or upload a file
Start with plain text, Base64 content with or without a Data URI prefix, or a local file.
Convert in auto, encode, or decode mode
Use Auto for quick detection, or switch modes yourself when you already know what the input is.
Preview, copy, or download
Copy raw Base64 or the prefixed version, view supported media, or download the result as a file.
What this converter helps with
Everything here stays close to the core job: turning content into Base64 or pulling text, files, and previewable media back out of it.
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One tool for encode and decode
Convert plain text and files to Base64, or decode Base64 content with or without a Data URI prefix from the same page.
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MIME detection and mismatch warnings
The converter can detect common file types and show a warning when the MIME prefix does not match the decoded content.
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Inline preview for media output
Images, audio, video, and PDFs can be viewed directly when the result matches a supported type.
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Private browser-side processing
Encoding, decoding, and preview generation stay in your browser.
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Copy raw Base64 or the prefixed version
Copy the result as raw Base64 or as Base64 with the full Data URI prefix, depending on what you need.
Common things you can do here
These are simple, direct use cases that match the actual behavior of the converter.
Turn text into Base64
Paste plain text and copy the encoded Base64 output.
Turn a file into Base64
Upload a local file and generate Base64, with an optional Data URI prefix.
Check decoded content
Paste Base64 content with or without a Data URI prefix to inspect text or view supported media.
Download the decoded file
Decode a Base64 value and download the resulting file when you need it.
Previewable output types
Base64 itself is not limited to specific file types. This section lists common decoded results that the page can preview or identify directly.
Images
Encode image files to Base64, or paste image Base64 content with or without a Data URI prefix to view the image directly.
Audio
Encode supported audio files to Base64, or paste audio Base64 / Data URIs to play them in the browser.
Video
Paste supported video Base64 content with or without a Data URI prefix to view it directly in the browser.
Documents
Open PDFs, read text results, or download files that are not previewable in the page.
Common Base64 conversions
Use the same converter for common tasks such as turning images, PDFs, and audio files into Base64 or pasting them back in to view them.
Convert image to Base64
Upload an image file and copy the encoded Base64 string.
Decode Base64 to image
Paste image Base64 content with or without a Data URI prefix to view it directly in the page.
Convert JPG to Base64
Turn a JPG or JPEG file into Base64 from the same upload flow.
Convert PNG to Base64
Generate PNG Base64, with an optional Data URI prefix.
Convert PDF to Base64
Upload a PDF and return its Base64 string directly in the browser.
Decode Base64 to PDF
Paste PDF Base64 content with or without a Data URI prefix to view it in the page or download it.
Convert audio to Base64
Encode supported audio files into Base64 for reuse elsewhere.
Decode Base64 to audio
Paste audio Base64 content with or without a Data URI prefix to play it when the format is supported.
Base64 converter FAQ
Short answers about supported inputs, preview behavior, privacy, and output formats.
What can this Base64 converter encode and decode?
It can encode plain text and uploaded files to Base64, and it can decode Base64 content, including the prefixed Data URI form, into text, previewable media, or downloadable files.
Does the Base64 converter upload my files or strings?
No. Conversion and preview generation happen in your browser, so your text, files, and decoded output do not need to be sent to a server.
Can I use this as a Base64 to image, audio, video, or PDF converter?
Yes. If the input matches a supported media type, the page shows a preview so you can inspect it directly.
Can I convert image to Base64, JPG to Base64, PNG to Base64, or PDF to Base64 here?
Yes. Upload the file and the converter generates Base64, with an optional Data URI prefix if you need it.
What is the difference between raw Base64 and a Data URI?
Raw Base64 contains only the encoded bytes. A Data URI adds a prefix such as data:image/png;base64, so the MIME type stays attached to the payload.
How does auto mode decide whether to encode or decode?
Auto mode checks whether the input looks like Base64 content and whether it includes a Data URI prefix. If it does not, it treats the input as plain text to encode.