Why does my JPG lose transparency?

JPEG has no alpha channel. Transparent pixels from PNG, WebP, or GIF sources are filled with white before encoding, so a logo on a transparent background ends up on a white box. Use the PNG or WebP converter when you need to keep transparency.

What quality does the JPG output use?

Every image is encoded at a fixed JPEG quality of 92%. JPEG is lossy, so each re-save discards a little detail—convert from the original file rather than from a JPG that has already been compressed.

Which image formats can I convert to JPG?

PNG, BMP, WebP, and GIF images up to 5000x5000 pixels each.

Should I choose JPG or PNG?

JPG suits photographs and images with smooth gradients, where lossy compression produces small files. PNG is the better choice for screenshots, text, line art, and anything that needs transparency, because it is lossless.

JPG Converter | Convert PNG, WEBP, BMP, GIF to JPG Online

Convert PNG, BMP, WEBP, and GIF images to JPG online instantly. Fast, secure, high-quality client-side conversion with no upload required.

Upload PNG, WebP, BMP, or GIF images and this converter re-encodes each one as a JPEG at 92% quality, right in your browser. JPEG has no alpha channel, so transparent areas are flattened onto a white background. Set an optional width or height to scale photos down before encoding, then download single .jpg files or a ZIP of the whole batch. Nothing is uploaded—every image is processed on your device.

Drop images here or click to upload

Supports JPG, PNG, BMP, WEBP, GIF (Max 5000x5000px)

Output Settings

Width (px)

Height (px)

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How to Convert Images to JPG

1
Upload your images
Drag and drop or click to select PNG, BMP, WebP, or GIF files (up to 5000x5000px each). An animated GIF becomes a single still JPG, because JPEG cannot store animation.
2
Scale the photo (optional)
Type a width, a height, or both. Filling in only one value keeps the aspect ratio. Shrinking a large photo before encoding is the quickest way to cut JPG file size.
3
Encode as JPG
Click Convert All. Each image is drawn onto a white canvas and compressed with the browser's JPEG encoder at quality 0.92.
4
Save the .jpg files
Use Download for one image, or Download All to get every JPG packed into a single ZIP archive.

References

ITU-T T.81 — JPEG Standard
The original ITU-T specification defining the JPEG image compression format that this tool outputs.
MDN — Image file type and format guide
Reference on web image formats, including JPEG, PNG, WebP, and GIF characteristics and trade-offs.

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Frequently Asked Questions

Why does my JPG lose transparency?: JPEG has no alpha channel. Transparent pixels from PNG, WebP, or GIF sources are filled with white before encoding, so a logo on a transparent background ends up on a white box. Use the PNG or WebP converter when you need to keep transparency.
What quality does the JPG output use?: Every image is encoded at a fixed JPEG quality of 92%. JPEG is lossy, so each re-save discards a little detail—convert from the original file rather than from a JPG that has already been compressed.
Which image formats can I convert to JPG?: PNG, BMP, WebP, and GIF images up to 5000x5000 pixels each.
Should I choose JPG or PNG?: JPG suits photographs and images with smooth gradients, where lossy compression produces small files. PNG is the better choice for screenshots, text, line art, and anything that needs transparency, because it is lossless.