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MondayKit

Convert PNG to JPG online

Turn PNG screenshots and graphics into smaller JPG files, with a background colour for transparency.

Processed in your browser. Files are never uploaded.

or drop files here, or paste

How to convert PNG to JPG online

  1. Add one or more PNG files.

  2. JPG is already selected as the output format.

  3. Pick a quality and a background colour for transparent areas.

  4. Click Convert and download.

  • No upload

    Your files are processed on your device and never sent anywhere.

  • Free, no signup

    No account, no watermark and no daily limit.

  • Fast

    No upload or download wait – results appear in seconds.

When PNG to JPG makes sense

PNG is perfect for logos and crisp graphics, but screenshots and photos saved as PNG can be several megabytes. Converting them to JPG often cuts the size by 70–90%, which helps when a form only accepts JPG or when you are emailing many screenshots.

Transparency is replaced

JPG cannot store transparent pixels. Any see-through areas in your PNG are filled with the background colour you pick. White works for documents; choose a different colour if the image will sit on a dark design.

Choosing quality

At 90% the difference is practically invisible. For screenshots with text, stay at 85% or above to avoid fuzzy edges around letters. For photos, 75–80% is a good saving.

Going the other way? Use JPG to PNG. Got a WebP image from a website? WebP to JPG converts it for older apps. Need a PDF instead? PNG to PDF combines PNGs into one document. All conversions run in your browser, so your images are never uploaded.

Typical size savings

Image PNG JPG at 85% (typical)
Full-HD screenshot of a web page 0.8–1.5 MB 150–300 KB
Phone photo saved as PNG 8–15 MB 1.5–3 MB
Logo with flat colours 20–60 KB similar or larger – keep PNG

Ranges vary with content; the live estimate in the tool shows your actual number before you convert.

Frequently asked questions

Why convert PNG to JPG?

JPG files are usually much smaller for photos and screenshots with many colours, and almost every form and app accepts them.

What happens to transparent areas?

JPG has no transparency, so they are filled with the background colour you choose – white by default.

Which quality should I pick?

90% looks identical to the original for most images. 75–80% saves more space.

Does JPG support transparency?

No. JPG has no alpha channel, which is why this page lets you pick the background colour that replaces transparent areas.

How do I know how big the JPG will be?

Once you add a file, the tool shows an estimated output size for the first image and updates it as you move the quality slider or change the background.

Related tools

HEIC to JPGConvert iPhone HEIC photos to JPG or PNG.Compress imageShrink JPG, PNG and WebP file size with a quality or target size.Resize imageChange image dimensions in pixels, percent or social presets.JPG to PDFTurn JPG, PNG or WebP images into a PDF document.Image to Base64Encode an image as a Base64 data URI with copy-ready snippets.

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