fast&private

Convert Images

Convert images between JPG, PNG and WebP, one at a time or whole folders.

Your data is never sent to any server.

The image converter changes the format of your images right in your browser and shows you how much each result weighs before you download it. It works in Chrome, Edge, Firefox and Safari, has no limit on the number of files, and no image ever leaves your device. The one exception is HEIC photos, which need a browser that can decode HEVC.

Which format to choose

The choice usually comes down to whether you need transparency and how much file size matters:

FormatSizeTransparencyWhen to use it
WebPSmallYesThe default choice for the web
PNGLargeYesScreenshots and logos, lossless
JPGMediumNoPhotos and maximum compatibility

Converting never recovers detail: it starts from the pixels the image already has. What pays off is choosing the right format from the start.

Specific conversions

This tool does them all, but if you always repeat the same one, each has its own page with what is worth knowing about that pair of formats:

FromTo JPGTo PNGTo WebP
HEICHEIC to JPG
JPGJPG to PNGJPG to WebP
PNGPNG to JPGPNG to WebP
WebPWebP to JPGWebP to PNG

What it’s for

  • Lightening a website: turning photos from JPG into WebP usually cuts their size noticeably without visible loss, so pages load faster.
  • Meeting the required format: forms, content managers and platforms that only accept JPG or PNG.
  • Opening downloaded images: many websites serve their images as WebP, and some programs still cannot open it.
  • Converting iPhone photos: HEIC photos come out in the format you choose, with the right orientation and colors.

How to use Convert Images

  1. 1

    Add your images

    Drag them onto the drop area, click to choose them or paste a screenshot with Ctrl+V. It accepts JPG, PNG, WebP, AVIF, GIF and iPhone HEIC photos, and whole folders too.

  2. 2

    Choose the output format

    Press WebP, JPG or PNG. If all your images are already in one format, the tool suggests another.

  3. 3

    Set quality and metadata

    For JPG and WebP you can move the quality slider; between 80 and 90 the difference is rarely visible. Also choose whether to remove the location and other metadata.

  4. 4

    Convert and download

    Press convert. You will see how much each image weighed and how much it weighs now, and you can download them one by one, as a ZIP or, in Chrome and Edge, straight into a folder.

Frequently asked questions

Are my images uploaded to a server?

No. The conversion runs in your browser, so your images never leave your device.

Which format should I choose?

WebP is the sensible choice for the web: it is much lighter than JPG at similar quality and every current browser supports it. PNG is right when you need transparency or cannot lose a single pixel, as with screenshots and logos. JPG is still the most compatible for photographs.

How many images can I convert at once?

As many as you want. Each result is saved to the browser's temporary storage as soon as it is ready, so memory does not fill up even with thousands of files. The exception is private windows, where the browser does not allow writing to disk and results stay in memory.

What happens to transparency when converting to JPG?

JPG has no alpha channel, so transparent areas are filled with white. If transparency matters, use PNG or WebP.

Does converting an image improve its quality?

No. The conversion starts from the pixels the image already has and cannot recover detail lost in an earlier compression. Turning a heavily compressed JPG into PNG keeps the artifacts and takes more space.

Is there a size limit per image?

Only your device's memory, which on a current computer is enough for photos of tens of megapixels. Also, the WebP format does not allow images larger than 16,383 pixels on a side; for those, choose JPG or PNG.

Why can't I convert to AVIF?

Because encoding AVIF in the browser is very slow and does not work the same everywhere, and we prefer to offer only what always works. You can convert AVIF images to any of the other formats.