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Image Format Converter

An Image Format Converter transcodes one or more images between PNG, JPEG, and WebP formats using the HTML5 canvas API — including a quality slider for lossy formats — all client-side with no upload.

85%

Drop images here or click Add images.

About Image Format Converter

Drop a single image or a folder of them. Pick the target format and quality (for JPEG/WebP). Each image is decoded, drawn to a canvas, and re-encoded via canvas.toBlob in your browser. Download files individually or as a ZIP. WebP typically yields 25–35% smaller files than equivalent JPEG with better quality, which is why Google recommends it for the web.

What Image Format Converter does

  • Convert between PNG, JPEG, and WebP
  • Per-image quality slider for lossy formats
  • Bulk drag-and-drop a whole folder of images
  • Download individually or as a single ZIP
  • Powered by canvas.toBlob — every file converts in-browser

When to reach for Image Format Converter

  • Converting a folder of PNG screenshots to WebP for a smaller commit
  • Producing JPEG copies of WebP files for systems that do not render WebP
  • Standardizing a mixed-format upload to a single format before processing
  • Shrinking a batch of design exports for an email send

How to use Image Format Converter

  1. 01

    Drop your images

    Drag and drop one file or a whole folder.

  2. 02

    Pick target format

    Choose PNG, JPEG, or WebP. Tune quality if the format is lossy.

  3. 03

    Download

    Download each result individually or grab them as a ZIP.

When to use Image Format Converter vs alternatives

AlternativeUse Image Format Converter when…Use the alternative when…
ImageMagick `mogrify`you want a paste-and-go UI in the browser.you are scripting.
squoosh.appyou want bulk conversion of many files at once.you want fine codec-level tuning on a single image.

Frequently asked questions

Which format should I pick?
WebP for the web — smaller files at equal quality, supported in every modern browser. JPEG for compatibility with older systems. PNG when you need lossless or transparency.
Does quality matter for PNG?
No. PNG is lossless — the slider only affects JPEG and WebP output.
Can I convert HEIC photos?
Only on browsers that decode HEIC natively (Safari does; most others don't yet). For non-Safari users, convert HEIC to JPEG first on the device.

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