Image to Base64 Converter
Encode small images into data URIs, raw Base64 strings, HTML img tags, CSS backgrounds and JSON-safe values. Decode Base64 images locally when you need a quick preview or download.
Choose or drag an image
PNG, JPG, JPEG, GIF, WebP and SVG work best. Processing stays in this browser.
Förhandsgranskning
No image selected
- Type
- -
- Size
- -
- Base64 length
- -
Output options
Developer snippets
Copy ready-to-paste data URIs, HTML, CSS and JSON-safe strings for test fixtures, docs and small embedded assets.
Reverse decoding
Paste raw Base64 or a data URI, preview safe image MIME types and download the decoded image from a local Blob.
Privat lokal bearbetning
The browser does the work. Convertr does not receive image files, Base64 strings, filenames or decoded previews.
Frequently asked questions
Are my images uploaded when I convert them to Base64?
No. The converter uses FileReader, Blob, and object URLs in your browser. Image files and Base64 strings are not uploaded to Convertr servers.
Can I decode Base64 back to an image?
Yes. Paste a raw Base64 string or a data URI, choose the MIME type if needed, preview the decoded image, and download it locally.
Should I use Base64 for large images?
Usually no. Base64 makes files larger and can slow pages down. It is best for small icons, placeholders, test fixtures, and quick developer snippets.