Why is my PNG so much larger than a JPG of the same image?

PNG is ideal for logos, screenshots, and graphics that need transparency or lossless detail. For photographs and other continuous-tone images, however, a PNG can be much larger than necessary. Converting it to JPG can produce a smaller file that is easier to upload, email, and store.

Upload one or more PNG files, choose the JPG quality and dimensions, and select the background color used for transparent areas. JPG does not support transparency, so transparent pixels must become a solid color. Keep the PNG when transparency or pixel-perfect graphics matter. Use the JPG copy for photographs, email attachments, website images, and platforms that require JPG.

Reasons to convert PNG to JPG usually come down to compatibility, file-size, or specific feature requirements. Common situations:

• An app or platform only accepts JPG uploads.
• You need a feature unique to JPG (e.g. transparency, vector scaling, animation, multi-page pages, etc.) that PNG doesn't provide.
• You're optimising file size — modern formats often produce smaller files than the older format you started with.
• You need a single archival format across a project so files behave consistently in the same viewer.

1. Open the PNG → JPG tool on jpg.now.
2. Drag your PNG file onto the drop zone, or click Select files. You can drop a whole folder of files at once.
3. The output is fixed to JPG. If the format supports extra options (page size, transparency background, quality, EXIF stripping), tweak them in the right-hand panel.
4. Click Convert. The job runs on our server and finishes in a few seconds for typical photos.
5. Download the result. Files stay in storage for 24 hours and are then permanently deleted.

The entire flow is free for the first 10 jobs per day with no signup required. A free account doubles that quota; a premium plan removes the limit entirely.

• Use quality 85–90% for the best balance of size and quality when converting photographic PNG images.
• Check for transparency before converting - If your PNG has a transparent background, set the background fill colour to match your intended use (white for documents, a matching colour for web designs).
• Converting UI screenshots (with text and sharp edges) to JPG can introduce blurring around text - Keep these as PNG for crisp output.
• For web publishing, consider converting to WebP instead of JPG for even better compression while avoiding the transparency issue.