Inspect

Data URI Inspector

Paste a data URI to break it into its parts — scheme, MIME type, charset, encoding, and payload — with decoded size and a quick validity check.

Data URI

Local

Breakdown

Valid data URI
Scheme
MIME type
Charset
Encoding
Payload chars
Decoded size
About this tool

About Data URI Inspector

The Data URI Inspector breaks a data URI into its parts — scheme, MIME type, charset, encoding, and payload — with details about each. It is for developers debugging or learning how data URIs are structured.

A malformed data URI is hard to diagnose as one long string. Inspecting its parts locally pinpoints the issue without uploading the data.

How to use

Step by step

  1. Paste a data URI.
  2. The inspector separates the scheme, MIME, charset, encoding, and payload.
  3. Review the details of each component.
  4. Use the breakdown to confirm or fix the URI.
Key features

What it offers

  • Component-by-component breakdown
  • MIME, charset, and encoding details
  • Payload inspection
  • Runs locally — Data URI Inspector
Common use cases

Where it helps

  • Debugging a data URI that will not render
  • Confirming the MIME type and encoding of a URI
  • Learning how data URIs are structured
  • Checking whether a URI is Base64 or percent-encoded
Best practices

Tips for best results

  • Check the MIME type first when a data URI fails to render.
  • Confirm whether the payload is Base64 or percent-encoded before decoding.
  • Note the charset for text payloads so they are read correctly.
Common mistakes to avoid

Pitfalls to watch for

  • Overlooking a missing or wrong MIME type, a common reason a URI fails.
  • Confusing Base64 and percent-encoded payloads, which the inspector distinguishes.
  • Ignoring a charset that affects how text payloads are interpreted.
Benefits

Why people use it

Clear breakdown

Every part of the URI laid out.

Pinpoints issues

Spot a wrong MIME or encoding fast.

Educational

Understand data URI structure.

Private

Inspection happens on your device.

FAQ

Common questions

A data URI is data:[<mime>][;charset=…][;base64],<payload>. The inspector separates each part so you can verify them.
It indicates the payload is Base64-encoded rather than percent-encoded text. The inspector reports which encoding is in use.
Yes. Any data URI works — text, JSON, fonts, SVG, or images — the parser only reads the structure.
No. Parsing runs entirely in your browser.
Private by design

This runs entirely in your browser

No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.

Install Toolisco Add it to your device for offline, one-tap access.