Zoven

Format Converter

Convert images between PNG, JPG, WebP formats

What is the Format Converter?

The format converter works like this: it converts between JPG, PNG, WebP and AVIF via canvas re-encoding, with transparency-aware handling. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.

How to use the Format Converter

1. Select or drop your image.
2. Adjust the available settings while watching the preview.
3. Check dimensions, quality and format before exporting.
4. Download the result and keep the original when quality matters.

Features

• Runs on your device via the Canvas and WebAssembly APIs
• Batch-friendly when you have several files
• Original images stay untouched

Common mistakes to avoid

• Over-compressing images that contain small text
• Exporting transparency to JPEG

Examples

Input	Result
PNG with alpha → WebP	Smaller file, transparency fully preserved

Best used for

• Getting a reliable answer for format converter without installing an app
• One-off tasks done in under a minute from any device
• Checking results before committing them to something important
• Working on a phone where desktop software is unavailable

Privacy

Images are processed on your device; nothing is uploaded unless a tool explicitly says a server lookup is involved.

Frequently asked questions

When is JPEG wrong?

Whenever transparency or crisp text matter - JPEG has no alpha channel and blurs hard color edges.

Which conversions are supported?

JPG, PNG, WebP and AVIF in any direction, with transparency handled correctly - a transparent PNG converted to JPEG gets a matte background, since JPEG cannot carry transparency.

When do I convert to AVIF?

When the target environment supports it - AVIF currently leads on size for the same quality, at the cost of older-software compatibility.

More like this

Zoven offers 200+ free browser tools. Browse by category - Calculators, Converters, Generators, Developer Tools and Media Tools - or read workflow guides on the Zoven blog.