Base64 Image Viewer Online | Instant Preview and Download

Use this tool

Base64 image viewer

Paste Base64 and preview the image instantly. Then download it in multiple formats.

Image Base64Fallback MIME for raw Base64When content has no data:image prefix, this type is used for image rendering.

Image preview

Paste a valid Base64 string to preview image here.

Download format

Decoding and preview run locally in your browser. Base64 input is not sent to a server by default.

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Quick guide and practical context

Turn Base64 text into a visible image

This tool decodes Base64 input and renders the image immediately in your browser, helping you validate payload content quickly.

After previewing, you can download the decoded image in original form or export to common formats such as PNG, JPEG, WEBP, and SVG.

Practical workflows for API and support teams

It is useful when backend services return image data as Base64 inside JSON responses or webhook payloads.

The side-by-side preview and format export flow reduce manual debugging steps during integrations and QA checks.

Validate Base64 image payloads from APIs.
Decode data URLs into downloadable files.
Convert decoded output to another format.
Review images without external desktop software.

Privacy and practical limits

Decoding and rendering happen locally in the browser by default, without mandatory server upload.

Large Base64 strings may require more memory and processing time depending on device performance.

Frequently asked questions

Do I need to upload Base64 content to a server?

No by default. Decoding and preview run locally in your browser.

Does it support both data URL and raw Base64?

Yes. You can paste either format and define a fallback MIME type for raw Base64 content.

Can I download in different image formats?

Yes. After decoding, you can export to multiple image formats available in the tool.

Is preview updated instantly?

Yes. The preview updates automatically as soon as the Base64 input is valid.

Is this tool free?

Yes. It is free to use with no sign-up and no mandatory login.

Helpful links to continue similar tasks without starting over.

Image to Base64 Generator

Upload an image and generate Base64 automatically with preview, one-click copy, and output mode selection.

Image and PDF Converter

Convert 20+ image formats and PDF directly in your browser with a fast, free, no-sign-up workflow.

HTML Viewer with CSS and JS

Preview HTML with CSS/JS support, fullscreen mode, and multi-file upload for free, with no sign-up and no login.

Privacy and local processing

Tools on this page run directly in your browser and do not send entered content to a backend. This improves privacy and reduces latency.

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