Drop a PNG and get a JPG back instantly — with a live quality slider, a before/after size comparison, and no upload anywhere. The usual result for photos: the same image at a fraction of the size.
How to convert PNG to JPG
- Drop your PNG in the box — conversion happens immediately.
- Adjust the quality slider if you want a smaller file (the JPG re-encodes live).
- Download. The size comparison shows exactly what you saved.
Why this conversion usually pays off
PNG is a lossless format: it reproduces every pixel exactly, which is wonderful for graphics and terrible for photographs. A camera photo or complex render stored as PNG carries megabytes of pixel-exact detail no eye can see. JPG was engineered for exactly that content — at 90% quality the difference is invisible and the file is typically a fifth the size. That matters for email attachment limits, upload caps on forms and marketplaces, page-speed budgets, and phone storage.
The transparency rule
JPG simply has no concept of transparency. Anything transparent in your PNG — a cut-out product shot, a logo’s background — is flattened onto white during conversion (white, not the black that many naive converters produce). If the transparency is the point of the image, keep PNG or use WebP, which compresses like JPG but keeps the alpha channel.
When PNG was the right call all along
Some images should stay PNG: screenshots with readable text, charts, diagrams, pixel art, and logos. JPG’s block-based compression creates visible halos around sharp edges and text strokes — and for flat-color images PNG often compresses better anyway. Convert the photos; leave the screenshots alone. (Need the reverse conversion? JPG to PNG.)
Details worth knowing
Conversion happens at full resolution — no silent downscaling; pair with the image resizer when you also want smaller dimensions, or the compressor to squeeze an existing JPG further. Color data is preserved through your browser’s own decoder, the same one that displays the image. EXIF metadata (location, camera model) is not carried over — a quiet privacy bonus when sharing.
Private by design
There is no upload step: decoding, flattening, and re-encoding all run on your device in a background thread. Family photos and work documents never touch a server.