Image Format Converter

Every image format serves a different purpose — PNG for lossless graphics with transparency, JPEG for compressed photographs, WebP for the best compression-to-quality ratio on the modern web, and AVIF for next-generation image delivery with up to 50% smaller files than JPEG at equivalent quality. Our free Image Format Converter lets you transform images between all four formats instantly, right in your browser. Adjust the quality slider to find the perfect balance between file size and visual fidelity, compare original and converted sizes, and see exactly how much space you're saving. The checkerboard preview background reveals transparency in PNG and WebP outputs. All processing uses the browser's Canvas API — your images never leave your device.

How to Use

1. Upload an image — Drag and drop or click to browse. Supports PNG, JPEG, WebP, AVIF, BMP, TIFF, and GIF input.
2. Choose target format — Select from PNG, JPEG, WebP, or AVIF. Each format shows a description of its best use case.
3. Adjust quality — For lossy formats (JPEG, WebP, AVIF), use the slider to balance file size against visual quality. Higher values mean better quality but larger files.
4. Compare and download — See the original and converted images side by side with file size comparison showing percentage change. Click Download to save.

Supported Formats

• PNG — Lossless compression with full alpha transparency support. Best for logos, icons, screenshots, and graphics with text. Always lossless — the quality slider has no effect.
• JPEG — Lossy compression optimized for photographs and complex images. No transparency support. 85% quality provides excellent visual results with significant file size reduction.
• WebP — Modern format by Google supporting both lossy and lossless compression with transparency. Typically 25–35% smaller than equivalent JPEG/PNG. Supported by all modern browsers.
• AVIF — Next-generation format based on the AV1 video codec. Offers up to 50% better compression than JPEG at equivalent quality. Supports HDR, wide color gamut, and transparency. Browser support is growing rapidly.

Key Features

• 4-Way Conversion

  Convert between PNG, JPEG, WebP, and AVIF in any direction. All combinations supported.

• Quality Control

  Adjustable quality slider (10%–100%) for lossy formats. Real-time preview updates as you adjust.

• Size Comparison

  See exact bytes before and after conversion with percentage change — green for savings, red for increases.

• Transparency Preview

  Checkerboard background reveals alpha channels in PNG and WebP — see exactly where transparency exists.

• All Browser Formats

  Input accepts PNG, JPEG, WebP, AVIF, BMP, TIFF, GIF — any format your browser can render.

• 100% Private

  Images processed via Canvas API in your browser. Never uploaded, never stored, never seen by any server.