How it works
When you open a tool, your browser downloads the code for that tool, and nothing else. When you choose a file, the browser reads it from your disk, does the work (drawing an image, building a PDF, encoding an MP3), and hands the result straight back to you. There's no upload queue, no server copy to delete later, and no account to create.
That makes BlinkConvert a good fit for private documents like contracts, IDs, payslips and medical letters, and fast on slow connections, because only the result ever exists, and it exists on your device.
Questions
Are these tools really free?
Yes. All 67 tools are free to use with no sign-up, no watermark and no daily limit.
Do you upload my files?
No. Each tool runs inside your browser using JavaScript and your device's own processing power. Your files are read from your device, converted there, and saved back to your device.
How can a website convert files without uploading them?
Modern browsers can read files you choose, draw images, decode audio and build PDFs locally. The page downloads the tool once; after that the work happens on your device, which is also why it's fast.
Do the tools work on phones?
Yes. Every tool works in mobile browsers. The screen recorder is the exception, because phones don't let websites capture the screen.