Image Converter — Convert PNG, JPEG & WebP
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This image converter changes an image from one format to another without uploading it anywhere. Drop in a PNG, JPEG, WebP, GIF, or BMP file, choose the target format, and the converted result appears immediately alongside the original. PNG is lossless and keeps transparency, which makes it right for logos, icons, and screenshots with sharp edges. JPEG produces the smallest files for photographs but cannot store transparency, so transparent areas are flattened onto a solid background during conversion. WebP sits between the two, giving noticeably smaller files than JPEG at similar quality while still supporting transparency, which is why it has become the default for the web. For the lossy formats a quality slider lets you trade detail against size, and the panel shows the original size, the converted size, and the difference between them, so you can see exactly what a format change buys you before committing. Everything runs locally through the browser canvas, so your images stay on your device. Upload an image below to convert it.
Features
- Convert between PNG, JPEG, and WebP
- Quality slider for the lossy formats
- Live before and after file size comparison
- Shows the exact size difference in bytes and percent
- Flattens transparency automatically when converting to JPEG
- Side-by-side preview of source and converted image
- Drag and drop, click to browse, or paste from the clipboard
- Runs entirely client-side — nothing is uploaded
Why use this image converter?
- See the real size saving before you download
- Completely private — conversion happens on your device
- Pick the right format with plain-language guidance
- Free and unlimited, with no watermarks or signup
Frequently asked questions
Which image format should I use?
Use PNG for logos, icons, and anything needing transparency or sharp edges. Use JPEG for photographs where the smallest file matters. Use WebP for the web generally — it is smaller than JPEG at similar quality and still supports transparency.
Does converting an image lose quality?
Converting to PNG is lossless. Converting to JPEG or WebP re-encodes the image and discards some detail, controlled by the quality slider. Converting a JPEG to PNG will not restore detail already lost by the original compression.
What happens to transparency when converting to JPEG?
JPEG has no alpha channel, so transparent areas are flattened onto a solid background during conversion. Choose PNG or WebP if you need to keep transparency.
How much smaller is WebP than JPEG?
WebP is typically 25–35% smaller than JPEG at visually equivalent quality, though the exact saving depends on the image. The converter shows the real before and after sizes so you can measure it for your own file.
Are my images uploaded to a server?
No. Conversion runs locally in your browser with the canvas API, so your image never leaves your device and is never stored anywhere.
Can I convert an image to SVG?
Not meaningfully. SVG is a vector format, and converting a photo to SVG only wraps the same pixels inside an SVG container without making it scalable. Real vectorisation requires tracing, which is a different process.
From the blog
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