Image Compressor

PNG to JPG Converter

Convert PNG to JPG locally — useful for shrinking photographic PNGs that have no real need for transparency.

PNG is great for screenshots, logos and graphics — but it's a poor choice for photographs because lossless compression makes those files four to ten times larger than they need to be. Converting photographic PNGs to JPG typically reduces file size by 80–95% with no visible quality loss at any normal viewing size.

This converter runs entirely in your browser. Transparency is flattened onto a white background, which is what most JPG-only platforms (forms, email, older CMS uploads) expect anyway. Use the quality slider to fine-tune the trade-off.

Frequently asked questions

Why convert PNG to JPG?
PNG is lossless — every pixel is stored exactly — which is overkill for photographs. JPG uses perceptual compression that produces files 4–10× smaller for photographic content with no visible quality difference. For graphics with sharp edges or transparency, stay with PNG.
Will I lose transparency?
Yes — JPG doesn't support transparency. Any transparent pixels in the source PNG are flattened to white during conversion. If you need to keep transparency, use the WebP converter instead — WebP supports transparency and is smaller than PNG.
How much smaller will the JPG be?
For photographic content, typically 80–95% smaller. For graphics or screenshots, JPG may actually produce a larger file than the source PNG — the converter shows the before/after sizes so you can see immediately whether the conversion was worthwhile.
Is my file uploaded?
No. The conversion runs in your browser using the Canvas API. The PNG is decoded and re-encoded as JPG entirely locally — the file never touches a server.
What quality should I pick?
Quality 85–90 is the sweet spot for photographic content — visually identical to the source at standard viewing sizes. Drop to 75 for thumbnails or anything that won't be viewed at full size.