Image Format Converter Online
Convert images between PNG, JPEG, WebP, and BMP formats instantly in your browser. Adjust quality, preview results, and download — no upload, no server, 100% free.
Drop image here or choose file
PNG, JPEG, WebP, BMP supported
Frequently Asked Questions about Image Format Converter
How do I convert an image format online for free?
Click 'Choose Image' or drag and drop your image file, select the target format (PNG, JPEG, WebP, or BMP), adjust quality if needed, then click Convert & Download. Everything runs in your browser — no file is uploaded to any server.
Can I convert PNG to WebP online without losing quality?
Yes. Select PNG as the source, choose WebP as the output format, and set quality to 100 for lossless-equivalent output. WebP at high quality typically produces smaller files than PNG while maintaining visual fidelity.
What image formats are supported?
This tool supports PNG, JPEG (JPG), WebP, and BMP as both input and output formats. You can convert in any direction — for example, WebP to PNG, JPEG to WebP, BMP to PNG, and so on.
Does the quality slider affect PNG or BMP output?
No. PNG and BMP are lossless formats, so the quality slider only applies to JPEG and WebP output. For PNG and BMP, the full pixel data is preserved regardless of the slider value.
Is my image uploaded to a server?
No. All conversion happens entirely in your browser using the HTML5 Canvas API. Your image data never leaves your device. This makes the tool safe to use with sensitive or confidential images.
Why is my WebP file larger than the original JPEG?
WebP is more efficient for most images, but very small or highly compressed JPEGs can sometimes be smaller than their WebP equivalent at the same quality level. Try lowering the quality slider or converting to PNG instead.
What is the maximum image size I can convert?
There is no hard limit enforced by the tool. In practice, your browser's available memory determines the limit. Images up to 20–30MP typically convert without issues on modern devices.