Free image tool

Image Format Converter

Choose an image and an output format, and download the converted file. The picture stays on your device the whole time.

By iToolsLab Editorial TeamUpdated 14 October 2026How we build tools

What is image format converter?

Different places need different image formats. Websites like WebP for small files, email and older software prefer JPEG, and designers use PNG for sharp graphics and transparency.

This converter redraws your image in the format you pick, right in your browser, so nothing is uploaded and your files stay private.

How to use the image format converter

  1. Choose an image file.
  2. Pick the new format. Set quality for JPEG or WebP.
  3. Press Convert and download the new file.

How the image format converter works

The image is drawn onto a canvas at its original size and exported with the browser's image encoder. JPEG has no transparency, so transparent areas turn white. PNG is lossless and ignores the quality setting.

Worked example

A 2 MB PNG photo saved as JPEG at quality 90 is often under 400 KB. A JPEG saved as PNG gets larger because PNG stores every pixel without loss.

Common uses of the image format converter

  • Turning a PNG screenshot into a smaller JPEG.
  • Converting photos to WebP for a website.
  • Changing a WebP image so older software can open it.
  • Preparing images for a platform that accepts only certain formats.
  • Saving a JPEG as PNG before editing graphics.

Tips and common mistakes

Do not convert a JPEG to PNG expecting better quality. The lost detail does not come back.

Use WebP for web pages, since all modern browsers support it.

Background: what to know before you rely on it

Each image format was designed for a job. JPEG, from 1992, is great for photos and uses lossy compression. PNG, from 1996, is lossless and supports transparency, which makes it ideal for logos and interface graphics. GIF supports simple animation with a limited palette. WebP, released by Google in 2010, supports lossy and lossless modes plus transparency and animation, usually in smaller files. AVIF is newer and smaller still but not yet supported everywhere. When you convert between lossy formats, quality drops slightly each time, so convert from the original when you can.

Private, free and fast

This tool runs entirely in your browser. What you type or choose is not uploaded to a server and is not saved after you close the page, which keeps it fast and private. It is free to use as often as you like. See more in all image tools, or browse the full list of tools.

Frequently asked questions

How do I convert PNG to JPG?

Choose the PNG, select JPEG and press Convert.

Does converting reduce quality?

JPEG and WebP are lossy and lose a little detail. PNG is lossless.

Is my image uploaded?

No.

Can I convert many files?

One file at a time.

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Results are for information and education. For legal, financial, medical or security decisions, check with a qualified professional. Keep your original image files.