Image Converter
Drag an image here or click to choose
Or paste an image with Ctrl+V
Max 50 MB · 100 MP
- Upload your image.
- Adjust the quality, between 0.1 and 1.0.
- Choose the background colour that replaces transparent areas.
- Download the converted file.
This is the point that needs attention. The JPEG format has no alpha channel, so any transparent area must be filled with a solid colour during conversion.
The default fill is white, which works for most cases. If the image will sit on a dark background, pick a matching colour, or the silhouette will carry a visible light frame.
Converting a logo with a transparent background to JPEG makes that loss irreversible: the alpha does not come back by converting to PNG again. Always keep the original.
- Photography in general, which is exactly what the format was designed for.
- Maximum compatibility: virtually all software from any era opens JPEG.
- Email attachments and older upload systems that reject modern formats.
- Printing services that only accept JPEG or TIFF.
Screenshots, flat-colour illustration, logos and any image with text look visibly dirty in JPEG. Compression creates artefacts around sharp edges, and the effect is very noticeable on letters.
For those cases, PNG or lossless WebP preserve edges and often produce smaller files.
Loss is also cumulative: every new conversion degrades further. Always convert from the original file.
All processing runs in your browser; the image is never uploaded.
- Upload your image.
- Download the converted file — PNG has no quality setting.
PNG has no quality control: the format is lossless by definition, and every PNG produced from the same image holds exactly the same pixels. Only file size varies between encoders.
This is the opposite of JPEG and WebP, where lowering quality permanently discards visual information.
In practice: there is nothing to tune. Convert and the result matches the original, pixel for pixel.
This is the most common misunderstanding. Converting a compressed JPEG to PNG does not undo the artefacts: it merely preserves losslessly an image that was already degraded.
The result is a file much larger than the source JPEG, with exactly the same visual quality. You pay in size and gain nothing.
Converting to PNG makes sense when you need transparency, preserved sharp edges, or a lossless format for successive edits — never as an attempt to restore an image.
- Images with transparency, which JPEG does not support.
- Screenshots, where text must stay sharp.
- Logos, icons and illustration with flat colour areas.
- Working intermediate files, where the image will be re-edited repeatedly without accumulating loss.
- For photography, prefer JPEG or WebP: PNG produces far larger files with no visual benefit.
- Upload an image in any format your browser supports.
- Choose lossy compression, adjusting the quality, or lossless.
- Download the converted file and compare its size to the original.
At the same visual quality, WebP produces files typically 25% to 35% smaller than JPEG and far smaller than PNG.
Its advantage over both older formats is that it combines capabilities that used to be separate: lossy compression like JPEG, lossless compression and an alpha channel like PNG, and animation like GIF.
That lets one format replace three, with a smaller file in every case.
Support is universal in current browsers. The caveat is older desktop software and some email workflows, which may still not open the format.
Lossy compression discards visual information and is the choice for photography, where the eye notices nothing until fairly aggressive levels.
Lossless preserves every pixel exactly and is the choice for screenshots, flat-colour illustration, logos and any image containing text — cases where lossy compression creates visible mush around edges.
Even in lossless mode WebP usually produces smaller files than the equivalent PNG, which makes conversion worthwhile even when fidelity is mandatory.
The alpha channel is preserved, so images with transparent backgrounds keep working after conversion. That is the critical difference from JPEG, which has no transparency and fills the background with a solid colour.
To serve WebP safely on sites that must support older browsers, the standard approach is to declare both versions and let the browser pick the one it can display.
Conversion runs entirely in your browser: the image is never uploaded anywhere.
Frequently asked questions
Because JPEG does not support transparency. Transparent areas take the chosen background colour, white by default. If you need transparency, use PNG or WebP.
No. Alpha information is discarded during conversion and does not come back. Keep the original file.
Between 0.8 and 0.92 is usually indistinguishable from the original for photography. Below 0.7 artefacts start showing in gradients and along edges.
Because JPEG compresses sharp edges badly. For images with text, use PNG or lossless WebP.
No. Conversion happens in your browser.
No. Compression artefacts are already part of the image. PNG merely preserves them losslessly, producing a much larger file at the same visual quality.
Because PNG is lossless: there is no quality to pick. The result preserves every pixel of the original.
Because lossless compression has limits, and photographs contain a lot of colour variation. For photographic images, JPEG or WebP produce far smaller files.
Yes, the alpha channel is fully preserved. It is the main reason to choose PNG.
No. Conversion happens in your browser.
Current browsers do. The caution is older desktop software and some email clients, which may not recognise the format.
Yes, the alpha channel is kept. That is the decisive advantage over JPEG, which has no transparency and fills the background with a solid colour.
Lossy for photography. Lossless for screenshots, logos, illustration and any image with text, where loss creates visible mush around edges.
At the same visual quality, typically 25% to 35% against JPEG. Against PNG on photographic images the reduction is usually much larger.
No. Conversion happens in your browser and the file never leaves your computer.