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FilesKit

Convert images between JPG, PNG and WebP

Change the format of one or many images, with a quality slider for JPG and WebP. The conversion runs in your browser, so the images are not uploaded.

JPGPNGWebPProcessed in your browser
The tool loads in your browser…

Features

  • Batch conversion

    Convert up to 50 images in one run and download them individually or as a ZIP, with the total size before and after.

  • Quality control

    JPG and WebP have a quality slider from 50 to 100 percent. PNG is lossless.

  • Transparency handled

    PNG and WebP keep transparent areas. JPG cannot, so they become white and the page tells you when that applies.

  • Warnings that help

    The page explains when a conversion will make files much bigger, for example photos converted to PNG.

How to use Image Converter

  1. Choose your images or drop them onto the page.
  2. Select the output format and, for JPG or WebP, the quality.
  3. Select Convert.
  4. Download the converted images or the ZIP.

Supported formats

AcceptsJPG, PNG, WebP
ProducesJPG, PNG, WebP

WebP output is not available in Safari, because its image encoder cannot write WebP. Reading WebP works.

Limits and things to know

  • Up to 50 images, 50 MB each and 300 MB in total. Images above 120 megapixels are refused.
  • Animated images, TIFF and HEIC are not supported. Use BMP, GIF & AVIF Converter for BMP, GIF, AVIF and ICO files.
  • Metadata such as camera details, location and colour profiles is not kept, and colours are converted to sRGB.
  • Converting photos to PNG often makes files five to ten times larger.
  • Very large images can fail on older iPhones and iPads because of browser canvas limits.

Privacy and processing

Decoding and encoding are done by your browser’s own image engine inside a Web Worker. Nothing is sent to FilesKit, which has no server that receives images. Removing metadata is a side effect of re-encoding, not a separate guarantee about every file.

Common uses

  • WebP for the web

    Convert JPG or PNG images to WebP to make a website’s pictures smaller.

  • JPG for compatibility

    Turn a PNG or WebP into a JPG that any program or upload form accepts.

  • Screenshots to PNG

    Keep sharp text and edges by saving screenshots as lossless PNG.

  • Shrink a JPG

    Convert a JPG to JPG with a lower quality setting to reduce its size.

How this differs from other approaches

Online converters upload every image and send back the result, which is slow for big photos. FilesKit converts on your device. Dedicated desktop editors offer many more formats, batch rules and metadata handling.

Frequently asked questions

Which format is best?

JPG suits photos and works everywhere. PNG suits screenshots, logos and anything that needs transparency or exact pixels. WebP is usually the smallest at similar quality.

Why is the WebP option greyed out?

Your browser cannot write WebP images. This is the case in Safari. Choose JPG or PNG instead.

Are my images uploaded?

No. They are converted in your browser and FilesKit has no server that receives them.

Is EXIF or location data kept?

No. Re-encoding drops metadata, including camera and location details.

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