Thumbhash to Image

Convert Thumbhash Thumbnail-Hashes to PNG Images in your Browser. Thumbhashes are a compact representation of images, used for loading-Thumbnails

Thumbhash Hash-Input (Base64)

Use the Thumbhash Generator to get a hash from an image or load example.

Other Image Tools

Thumbhash to Image Converter and Viewer

What is a Thumbhash?

A Thumbhash is a very compact, binary representation of a placeholder for an image. It was created to generate tiny, blurry image previews that can be loaded quickly before the full-resolution image is available. Because they are so small, Thumbhashes are excellent for improving website loading performance and user experience.

How do I convert a Thumbhash to an image?

You can easily convert a Thumbhash to a viewable image using this tool. Simply copy your Thumbhash string (which is often Base64 encoded) and paste it into the input field above. The tool will instantly decode the hash in your browser and display the corresponding placeholder image.

Is there an online Thumbhash preview tool?

Yes, this page provides a free and instant online Thumbhash preview tool. It allows you to visualize the image represented by any Thumbhash string without needing to install any software. All decoding happens locally on your device for maximum speed and privacy.

Can I decode a Thumbhash to a PNG file?

Absolutely. After our tool renders the image from your Thumbhash, you can download it as a high-quality PNG file. This is useful for saving a local copy of the placeholder or for use in design mockups.

Why should I use Thumbhash for image placeholders?

Thumbhash is ideal for placeholders because of its extremely small size, often just a handful of bytes. This allows you to embed the placeholder directly in your initial HTML payload, giving users an instant preview while the larger, high-quality image loads in the background.

Is my data safe with this Thumbhash viewer?

Your data and privacy are fully protected. This Thumbhash viewer operates entirely within your web browser. The Thumbhash string is processed on your machine, and no data is ever uploaded to any server.

How is Thumbhash different from BlurHash?

Thumbhash is a more recent algorithm designed to produce an even smaller data string than BlurHash. It uses a different encoding technique that stores chroma (color) and luma (brightness) information more efficiently, resulting in a more compact placeholder.

What does a valid Thumbhash string look like?

A Thumbhash is a binary data structure, but it is typically shared as a Base64 encoded string. This makes it a sequence of alphanumeric characters that can be easily copied and pasted, for example: ZZcJbwKUaIh/iXdheKeFl5iDdwi3dUgP.