Image to Base64
Free image to base64 converter. Convert PNG, JPG, GIF, WebP to data URLs in your browser. No upload, no account.
Runs locally in your browser. Your input is not uploaded to DevToolMate servers.
Developer Quick Tips
- Paste the base64 output directly into CSS background-image rules: background-image: url(data:image/png;base64,...).
- Use for HTML email templates and prototypes where external image URLs are blocked or unavailable.
- Generate data URLs for JSON config fields, Storybook fixtures, and unit test fixtures.
- Supports PNG, JPG, GIF, and WebP, paste a data URL or upload a local file to convert instantly.
- Output stays in your browser; close the tab to clear all input from memory.
Frequently asked questions
Can I use Image to Base64 to embed images in CSS?
Yes. Convert your image to base64, then paste the data URL into your CSS background-image property: background-image: url(data:image/png;base64,...). This is ideal for small icons and logos that you want to inline without external requests.
Does Image to Base64 work with JavaScript?
Image to Base64 is a browser tool that converts files locally. You can copy the output and use it in JavaScript, or use the FileReader API in your own code to replicate this workflow. The tool itself runs entirely in your browser, no server calls.
What image formats are supported?
Image to Base64 accepts PNG, JPG, GIF, and WebP. Upload a file or paste an existing data URL. SVG files are not supported; use SVG to Data URI for vector markup instead.
Is my image uploaded to DevToolMate servers?
No. Image to Base64 runs entirely in your browser using the FileReader API. Your image is never sent to our servers. Processing is instant and private.
Can I use this for large images?
Image to Base64 enforces file-size limits to keep processing fast. Very large images will be rejected. For production use, consider whether inlining base64 images is optimal, large data URLs can bloat CSS and HTML. Use this tool for small icons, logos, and assets under 50 KB.
Related tools
- SVG to Data URI: Free SVG to data URI converter. Browser-local, no upload. Convert SVG to inline data:image/svg+xml URLs for CSS, img src, and webpack.
- Favicon Emoji Data URI: Convert emoji to SVG favicon data URI in your browser. Generate copy-ready link rel icon code locally, no upload or account needed.