qktools

Convert Image Format

100% local processing

Drag and drop images here

Or

Supports PNG, JPG, WebP, GIF, BMP; select multiple images at once

Frequently Asked Questions

Absolutely safe. All conversions happen in your browser; images are never uploaded to any server, ensuring complete privacy.

What is Image Format Conversion?

Image format conversion is the process of changing an image from one file format to another. For example, converting PNG to JPG to reduce file size, or to WebP to balance image quality with compression efficiency. Different formats have their strengths: PNG is lossless and supports transparency, JPG is compact and ideal for photos, while WebP offers a better balance between the two.

This tool supports decoding common formats such as PNG, JPG, WebP, GIF, and BMP, and can output to PNG, JPG, or WebP. It allows batch conversion and packaged downloading. All conversions are performed locally in the browser—no uploads needed, ensuring security and speed.

How to Convert Image Formats

  1. 1Drag and drop or select one or more images to convert.
  2. 2Choose the target format (PNG, JPG, or WebP).
  3. 3When outputting lossy formats, adjust image quality to control file size.
  4. 4Click "Start Conversion" to download images individually or as a ZIP package.

Why Choose Our Format Conversion Tool

Privacy first: Conversion is done locally in the browser; images are never uploaded to any server.

Full format coverage: Supports conversion between common formats, with batch processing and packaged downloads.

Free and fast: No watermarks, no usage limits, and local processing delivers instant results.