data:image/xxx;base64,..., so you can embed the image directly in HTML, CSS or JSON without an external image hosting service.embed favicon as base64 in css inline
Embed favicon as base64 in css inline. This tool handles this and related scenarios — including data uri base64 to image download converter and convert ico to data uri for html link tag — entirely in your browser with no signup or file upload.
convert svg to data uri for css background
Convert svg to data uri for css background. Whether you work with API data, config files, or log output, everything is processed locally. Related tasks like convert ico to data uri for html link tag are also supported.
webp to base64 data uri for lazy loading
Webp to base64 data uri for lazy loading. You can also use this tool for base64 image encoder for email html embedding and convert small logo png to base64 for markdown. All results appear instantly in the editor — no server round-trip required.
convert gif to base64 for email signature inline
Convert gif to base64 for email signature inline. This is one of many scenarios this tool supports. You can also convert small logo png to base64 for markdown without leaving the page or creating an account.
jpg to base64 for json api request body
Jpg to base64 for json api request body. All processing happens on your device, ensuring your data stays private. Related capabilities include data uri base64 to image download converter and convert ico to data uri for html link tag.
Overview
Image → Base64 turns a local image (PNG, JPG, GIF, SVG, WEBP, etc.) into a Base64-encoded Data URL of the form
How to Use This Tool
Step 1 — click the drop zone to open a file picker, or drop an image straight onto it. Step 2 — the tool reads the image and converts it to a Base64 Data URL; you can see the preview, filename, original size and the length of the Base64 string. Step 3 — click "Copy DataURL" to place the whole string on the clipboard; paste it into a CSS
background: url('...'), an HTML <img src="..."> or a JSON field. Step 4 — click "Clear" to reset and upload another image.Common Use Cases
Front-end developers reduce HTTP requests by inlining small icons (favicon, button icons) into CSS; embed images in email templates so recipients see them without external links; convert an SVG into a Data URL to use as a CSS background; ship image assets inside Electron apps or Chrome extensions; embed images in Markdown docs to avoid path dependencies; send images as JSON field values to an API.
Technical Details
Conversion uses the browser’s native
FileReader.readAsDataURL API. The Base64 string is roughly 4/3 the size of the original file (a 33% overhead). The Data URL auto-detects the MIME type (image/png, image/jpeg, and so on). Keep images under about 100 KB — a big Data URL bloats HTML/CSS and hurts first-paint performance. For SVG, URL-encoding is usually smaller than Base64.Privacy & Security
Image reading and encoding all happen locally in your browser and are never uploaded, making it safe to use with screenshots, design mockups or product photos that contain sensitive content.