Convertur
Runs in your browser, not on a server

Free online file converter that keeps files on your device

Convert images, PDFs, audio, video, documents, and data online. The conversion runs in this browser tab, so nothing is uploaded and you don't need an account.

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How to convert files online with Convertur

No server touches your file. It opens, converts, and downloads inside the page.

STEP 1Drop a filePick any file from your device. The page opens it locally and sends it nowhere.
STEP 2It converts in your browserA WebAssembly engine runs the conversion inside your browser tab.
STEP 3Download the resultSave the converted file. Close the tab and nothing is left behind.
Your fileYour browser converts itYour download
Cloud serverYour file never goes there.

How Convertur differs from other online converters

Convertur
  • Files stay on your device the whole time
  • Conversion starts right away, with no upload wait
  • No upload size caps or daily limits
  • Free, with no account to create
Upload-based converters
  • Files are sent to someone else's server
  • You wait while the file uploads and sits in a queue
  • Size limits, daily caps or paywalls are common
  • Many ask for an account or an email address

Frequently asked questions

How do I convert a file online with Convertur?

Drop the file on this page or click Browse files. Convertur opens it in the converter workspace and lists the formats it can become. Pick an output, click Convert all, then download the result.

Does this online converter upload my files?

No. Conversion runs in your browser with WebAssembly. Your files never reach a server. Once a tool has loaded, it keeps working offline too.

Is Convertur free?

Yes. Every current tool is free to use. You don't need an account.

Is there a file size limit?

There is no upload limit because nothing is uploaded. The real limit depends on your browser, your device memory, the file format, and the task.

Does it work offline?

Yes. Once a tool has loaded, it keeps working without an internet connection, because the conversion never needed a server.

Which browsers are supported?

It works in current versions of Chrome, Safari, Firefox, and Edge. What each tool can do may vary by browser, device memory, and operating system.