Base64 Image Analyzer

The Base64 Image Analyzer decodes Base64-encoded image strings and extracts comprehensive metadata including image format (JPEG, PNG, WebP, GIF, BMP, SVG), pixel dimensions, estimated file size in bytes, and color mode. Base64 image encoding is ubiquitous in web development — used for data URI backgrounds in CSS, inline images in HTML email templates, and image fields in JSON API payloads and database records. This tool saves developers from manually decoding and saving Base64 strings just to inspect basic image properties.

Browse all Converter tools

How to Use

Paste a Base64-encoded image string into the input area, either with or without the data URI prefix (data:image/png;base64,...). The tool instantly decodes the string, renders a preview, and displays the detected image format, width, height, and byte size. This works with any standard image format that browsers can render.

Common Use Cases

• •Inspecting Base64-encoded images embedded in HTML email templates to verify dimensions and format before deployment
• •Debugging oversized Base64 image strings in JSON API responses that are causing payload size or performance issues
• •Verifying image format and dimensions from CSS data URI backgrounds without saving the file locally
• •Extracting and previewing Base64-encoded thumbnail images stored in database JSON columns or document stores
• •Validating that Base64 image fields in JWT tokens, webhook payloads, or OAuth profile responses decode to valid images

Take a break and play free browser games