Data URL

Convert between file and data: Base64。 Runs locally—nothing uploaded.

File → Data URL

Choose or drop a fileUses FileReader.readAsDataURL; not uploaded.

No file selected.

Data URL

How to use & FAQ

Data URL: Convert between file and data: Base64. Runs instantly in the browser.

Free, no signup.

Do I need to sign up to use Data URL?▾

No. All Tools Ku features are free with no registration.

Does Data URL upload my data?▾

No. Processing happens in your browser; data is not uploaded to toolsku.com.

Accuracy?▾

Standard algorithms; verify critical decisions.

What calculations?▾

See page for supported scenarios.

Does it work on mobile?▾

Yes. For large files, use Wi-Fi for a smoother experience.

Can I download the result?▾

Yes. Copy text output or use the download button when available.