In this article
What Is Image Format Conversion?
Image format conversion changes a file from one image type to another — for example, turning a PNG into a JPEG or a JPEG into WebP. Each format has different strengths: JPEG excels at photographs with small file sizes, PNG supports transparency, and WebP offers the best compression-to-quality ratio for the web.
Converting between formats lets you pick the right balance of quality, file size, and feature support for your specific use case, whether it's website performance, print production, or sharing across platforms.
How Our Converter Works
CheckTown's image converter runs entirely in your browser using the Canvas API. No files are uploaded to any server — your images stay private on your device.
- Upload your image (JPEG, PNG, or WebP up to 50 MB) via drag-and-drop or file picker
- Select your target format (PNG, JPEG, or WebP) and adjust quality if applicable
- Click Convert and instantly download the result in the new format
Try it free — no signup required
Convert an Image →When To Convert Image Formats
Format conversion is useful in many common scenarios:
- Web optimization — convert PNG or JPEG to WebP for 25–35% smaller files with equivalent visual quality, improving page speed
- Transparency needs — convert JPEG to PNG when you need to add a transparent background for logos, icons, or overlays
- Compatibility — convert WebP to JPEG or PNG for email clients, older browsers, or print workflows that don't support modern formats
Frequently Asked Questions
Does converting between formats lose quality?
Converting from a lossy format (JPEG) to another lossy format (WebP) introduces a small additional quality loss. Converting to PNG (lossless) preserves all current quality. For best results, start from the highest-quality source available.
Which format produces the smallest file?
WebP consistently produces the smallest files at comparable quality, typically 25–35% smaller than JPEG. JPEG is second-best for photographs. PNG files are largest but support transparency and lossless quality.
Can I convert animated GIFs?
The current converter handles static images. For animated GIFs, the first frame will be extracted and converted to your target format.