Image Utilities
Base64 Image Viewer
Paste a Base64 string or full data URL to render the image instantly. Inspect file size, dimensions, and copy a shareable data URL in one place.
The Base64 Image Viewer renders a Base64-encoded image or full data URL directly in your browser. It shows the image preview alongside practical metadata such as file type, estimated size, and pixel dimensions.
Image preview
Rendered output, dimensions, and metadata appear here.
Paste Base64 data to preview the image.
What this tool does
The Base64 Image Viewer renders a Base64-encoded image or full data URL directly in your browser. It shows the image preview alongside practical metadata such as file type, estimated size, and pixel dimensions. This makes it easy to validate embedded images used in HTML, emails, or API payloads without needing to save a file first.
When to use this tool
Use it when you receive a Base64 string and need to confirm the asset before shipping or debugging. It is handy for checking email templates, reviewing API responses, or verifying inlined assets in a build pipeline. If you want to extract colors after confirming the image, jump to Image Palette Extractor or check colors in Color Converter.
How it works
The tool decodes the Base64 string in your browser, determines the MIME type when possible, and renders the result inside an image element. It then reads the image dimensions and calculates an approximate file size from the encoded data length. All processing happens locally so you can inspect sensitive assets without uploading them.
Example use case
A support ticket includes a Base64 screenshot embedded in a JSON response. Paste the string, confirm the image looks correct, and check the size before attaching it to a report. If the file is too large for email, download it and compress it before sharing.
Use cases
- Validate a Base64 image from an API response before embedding it in HTML.
- Confirm dimensions for an email template where image size limits matter.
- Inspect a data URL attached to a bug report without downloading a file.
Notes & limitations
The tool assumes the input is valid Base64 or a well-formed data URL. Corrupted or truncated strings will not render. File size is an estimate based on encoded data and may differ from original files with metadata. Some formats may not expose dimensions until fully decoded. For large assets, consider keeping data URLs out of production HTML to avoid performance issues.
Base64 strings can be thousands of characters long, so copying them between tools can introduce line breaks or hidden spaces. If the preview fails, remove whitespace and try again, or regenerate the data URL from the source file. This viewer is intended for quick inspection, not bulk batch processing.
