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Base64 to Image Viewer

Preview a data-URI string in the browser and download the decoded image.

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About the Base64 to Image Viewer

Base64 to Image Viewer is the reverse of the Image to Base64 tool — paste a data:image/... URI and the tool renders the image live, with a download button to save it as a real file.

How to use

  1. Paste a complete data:image/*;base64, string into the input.
  2. The preview appears instantly if the Base64 is valid.
  3. Click Download to save the decoded file.

Benefits & key features

  • Quickly inspect images embedded in HTML / email source.
  • Detects file type automatically from the MIME prefix.
  • No server round-trip — works offline and with confidential content.
  • Helpful when debugging chat apps that share images as Base64.

Pro tip

If the preview stays blank, the Base64 string is probably missing the data:image/png;base64, prefix. Prepend it and try again.

Why choose toolsfy for Image tools?

Image tools on the web love to ask for an email, insert a watermark, or quietly re-upload your photo to train someone's model. toolsfy's image utilities use the and OffscreenCanvas APIs that ship with every modern browser, which means the compression, resize or conversion step happens locally — often faster than uploading the file to a server would have taken.

Common use cases

  • E-commerce sellers batch-resizing product photos to the exact pixel dimensions a marketplace requires before listing a new SKU.
  • Writers compressing a hero image from 4 MB down to under 200 KB to keep a personal blog fast and cheap to host.
  • Designers converting a screenshot to Base64 to embed directly inside a quick HTML email mockup, with no external image URLs.

Frequently asked questions

Are my images uploaded to a server?

No. The file is read into a canvas inside your tab, processed, then offered back as a download. Nothing is uploaded.

Will quality suffer after compression?

Only if you tell it to. Every image tool exposes the quality slider and output format so you can choose between size and fidelity consciously.

Does it work on phones?

Yes — on iOS 15+ and Android 9+ Chrome. Large images may be slow on older phones because the decode step is memory-heavy, but functionality is identical.