Yes, completely free. No subscription, no account, no hidden limits.

Do you upload my image to a server?

No. Conversion happens entirely in your browser using the Canvas API. Your image never leaves your device.

Does it work offline?

Yes. Once the page is loaded, you can disconnect from the internet and the converter will still work perfectly.

Which input formats are supported?

The tool accepts JPEG, PNG, WebP, GIF, BMP, SVG, AVIF, and any other image format your browser can decode.

Why does converting a PNG to JPEG make the file larger sometimes?

PNG uses lossless compression, so simple graphics or screenshots are often smaller as PNG. Try lowering the JPEG quality slider to reduce the output size.

What happens to transparency when I convert to JPEG?

JPEG has no transparency channel, so a white background is painted behind the image before encoding. Without that step transparent areas would come out black, which is the usual unpleasant surprise when converting a logo. If you need to keep transparency, convert to PNG or WebP instead - both support it.

Which format should I pick?

WebP gives the smallest file at a given quality and is supported by every current browser, so it is the default choice for the web. JPEG is the safest for anything that will be opened by older software or sent to a print shop. PNG is the one to use when you need transparency or exact pixels, such as screenshots of text and line art.

🔄 Image Format Converter — Free, No Upload, In Your Browser

Instantly convert images to PNG, JPEG, or WebP — free and 100% in your browser, no file upload or account required. Looking for a free Convertio alternative? Toolio’s version is completely free and needs no sign-up.

Load Image

🖼️

Drop an image here, or click to browse

Supports JPEG, PNG, WebP, GIF, BMP, SVG, AVIF …

Private by design. This tool runs entirely in your browser — nothing you enter is uploaded or stored, and it works offline.

About

This tool converts your images entirely on your device using the browser's built-in Canvas API — your files never leave your computer. It supports JPEG, PNG, WebP, GIF, BMP, SVG, and AVIF as input, and lets you choose PNG, JPEG, or WebP as output with adjustable quality for lossy formats. Because everything runs offline in the browser, you get instant results with complete privacy.

How to use

Drop your image onto the upload area, or click to browse and select a file.
Choose your desired output format: PNG, JPEG, or WebP.
For JPEG or WebP, drag the Quality slider to balance file size and image clarity.
Click Convert and preview the result along with the new file size.
Click Download to save the converted image to your device.

FAQ

Is this tool free?: Yes, completely free. No subscription, no account, no hidden limits.
Do you upload my image to a server?: No. Conversion happens entirely in your browser using the Canvas API. Your image never leaves your device.
Does it work offline?: Yes. Once the page is loaded, you can disconnect from the internet and the converter will still work perfectly.
Which input formats are supported?: The tool accepts JPEG, PNG, WebP, GIF, BMP, SVG, AVIF, and any other image format your browser can decode.
Why does converting a PNG to JPEG make the file larger sometimes?: PNG uses lossless compression, so simple graphics or screenshots are often smaller as PNG. Try lowering the JPEG quality slider to reduce the output size.
What happens to transparency when I convert to JPEG?: JPEG has no transparency channel, so a white background is painted behind the image before encoding. Without that step transparent areas would come out black, which is the usual unpleasant surprise when converting a logo. If you need to keep transparency, convert to PNG or WebP instead - both support it.
Which format should I pick?: WebP gives the smallest file at a given quality and is supported by every current browser, so it is the default choice for the web. JPEG is the safest for anything that will be opened by older software or sent to a print shop. PNG is the one to use when you need transparency or exact pixels, such as screenshots of text and line art.