This is the step I use when a PNG is stubbornly large: convert it to JPEG/WebP for a big reduction, or convert a JPG to PNG when you truly need lossless output.
Note: converting to JPEG removes transparency. Use WebP/PNG if you need alpha.
Different platforms, tools, and workflows require different image formats. This converter changes any image between JPG, PNG, and WEBP instantly in your browser — no upload, no registration, no waiting.
Every image format makes different trade-offs between file size, quality, compatibility, and features. Understanding these trade-offs helps you choose the right target format for your specific situation rather than defaulting to whatever format the source happens to be in.
When to convert PNG to JPG: PNG files of photographs are almost always unnecessarily large. A photo saved as PNG might be 4–8 MB; the same image saved as JPG at 85% quality will be 400–800 KB with no perceptible quality difference at normal screen viewing. Convert photos, social media images, and product shots from PNG to JPG to dramatically reduce file size before uploading, sharing, or embedding.
When to convert JPG to PNG: If you need to edit an image repeatedly and re-save it (for example, adding text overlays, logos, or design elements), save it as PNG to avoid the cumulative quality degradation that occurs every time a JPG is compressed. Also convert to PNG when you need transparent backgrounds — logos placed on different coloured backgrounds, stickers for messaging apps, or watermarks that need to sit cleanly over other content.
When to use WEBP: WEBP is Google's modern image format, supported in all major browsers since 2020. It achieves 25–35% smaller file sizes than JPG at equivalent visual quality, and supports transparency like PNG. If you run a website and care about page speed, converting images to WEBP before uploading is one of the highest-impact optimisations you can make. Most website builders and CMS platforms (WordPress, Squarespace, Webflow) accept WEBP today.
Converting between lossless formats (PNG to PNG, PNG to WEBP at lossless) preserves every pixel exactly. Converting from lossless to lossy (PNG to JPG, PNG to WEBP at lossy) reduces quality slightly — the amount depends on the quality setting. Converting from JPG to PNG does not recover quality that was already lost when the original JPG was created; it simply stores the existing (slightly compressed) pixels in a lossless container.
Repeated JPG-to-JPG re-saving is what causes "generation loss" — each save discards slightly more detail. If you receive a JPG, edit it, and need to save it again, consider saving as PNG for the editing stage and converting back to JPG only for the final export. This workflow preserves maximum quality across multiple editing sessions.
This tool converts one image at a time. For converting large numbers of images (website image libraries, photography archives, product catalogues), consider command-line tools like ImageMagick or FFmpeg, or cloud-based batch processors. For a small number of images — up to 20 or 30 — processing them individually through this tool is perfectly efficient.