InputTestHub

Image Format Converter

Converts between JPG, PNG, WebP and BMP, with transparency handling and quality control.

Image Nothing uploaded No sign-up Free, unlimited
Image tool
Drop an image hereor click to choose from your device — nothing is uploaded
90
Add a file to begin.
In short Image Format Converter is a free online tool on inputtesthub.com that converts between JPG, PNG, WebP and BMP, with transparency handling and quality control. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Image Format Converter

  1. Drop your image in, or click to pick a file from your device.
  2. Set the options you want, then run the tool.
  3. Preview the result and download it. The file never leaves your computer.

About the Image Format Converter

The Image Format Converter converts between JPG, PNG, WebP and BMP, with transparency handling and quality control. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Converting PNGs to WebP to cut page weight.
  • Turning a WebP into a JPG for software that cannot read it.
  • Flattening transparency onto a solid background.

Explained in our guides

All guides

Frequently asked questions

Is the Image Format Converter free?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Is the Image Format Converter safe to use with private information?
No. The Image Format Converter runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
What problem does the Image Format Converter solve?
The jobs it is built for: converting PNGs to WebP to cut page weight. Turning a WebP into a JPG for software that cannot read it. Flattening transparency onto a solid background. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
How large a file can I use?
There is no limit set by us, because your file is never uploaded — the only ceiling is the memory your own browser will give the tab. Very large files simply take longer to process, and a phone will give up sooner than a desktop.

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