Is the data url validator private?
Yes. The validator checks the Data URL header and payload, then reports whether the value uses Base64 or percent-encoded data. All processing happens locally in your browser — nothing is uploaded to our servers.
Data URL Validator
Validate Data URLs, inspect media type, encoding, payload size, and Base64 syntax locally in your browser.
Runs locally in your browser
How to use it
- Paste your input or choose a file from this device.
- Run the conversion and review the detected type or preview.
- Copy the result or download it for your project.
Built for Data URL values
The validator checks the Data URL header and payload, then reports whether the value uses Base64 or percent-encoded data.
No registration, watermark, queue, or server upload is required.
Use Base64 wisely
Base64 is ideal for text-only APIs, small embedded assets, test fixtures, and portable documents. It increases payload size, so external files are usually better for large public assets.
Frequently asked questions
When should I use Base64 for Data URL values?
Use it when a text-only channel or API must carry binary data, or when a small payload involving Data URL values needs to live inside a self-contained document. Prefer separate files for large, cacheable public assets.