Data URL generator

Turn text or a selected local file into a percent-encoded or Base64 data URL. Create a self-contained URL for small test assets, snippets or prototypes without uploading the source file.

3 guest runs per rolling 24 hours10 with a free accountPrivate inputsMobile-friendly

Data URL generator workspace

Runs locally in your browser

The file or text is processed locally and is not uploaded. A selected file takes priority over entered text. Keep data URLs small because many browsers and services impose practical limits.

Result

Input and URL size—

Normalised media type—

Generated data URL

Use it with confidence

How to use the data URL generator.

Add the requested inputs

Use the labelled fields in the workspace above. If example values are provided, try them first or replace them with your own.

Calculate and review

Use the main action when needed. Text is encoded in the browser; files are read locally as bytes and represented with the chosen compatible encoding and media type.

Try a worked example

Select a small SVG or enter plain text, confirm its media type and generate a copyable data: URL.

Check the assumptions

Data URLs can be much larger than source files, may be blocked by content-security policy and are unsuitable for large assets, secrets or untrusted active content.

Helpful answers