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PNG files are often 3–5× larger than equivalent JPEGs. Converting is the fastest way to shrink screenshots, web graphics and photos saved in the wrong format. Drop your PNG files below — the conversion runs entirely in your browser.
PNG, JPG, GIF, WebP, HEIC up to 50MB per file
Choose filesFor photographs the gain is dramatic. PNG stores every pixel losslessly, which is the wrong strategy for continuous-tone images where no two adjacent pixels match. The same photo as JPEG is routinely five to ten times smaller with no difference visible on screen — a 4MB PNG becoming a 400KB JPEG is entirely normal.
What you lose is transparency. JPEG has no alpha channel at all, so any transparent area has to be filled with a solid colour, usually white. If your image is a logo or an icon meant to sit on a coloured background, converting it to JPEG will surround it with a visible rectangle.
Convert when the image is a photograph: a camera shot, a scanned picture, a screenshot of a photo. These are exactly the cases PNG handles badly and JPEG handles well, and the file size difference is worth far more than the theoretical quality loss.
Keep PNG when the image contains flat colour and sharp edges — logos, diagrams, charts, UI screenshots, text on a plain background. JPEG's block-based compression produces visible fringing around hard edges and around text, which is precisely the artefact PNG exists to avoid. If you want both small files and transparency, WebP does both.
JPEG uses lossy compression, so some detail is discarded. At 85% quality the difference is invisible to the naked eye for photos. For graphics with sharp text or flat colors, consider WebP instead — it handles both photos and graphics well.
JPEG doesn't support transparency — transparent areas are filled with white. If your PNG has a transparent background that you need to keep, export to WebP instead (supports transparency and gives smaller files than PNG).
For photographs accidentally saved as PNG, JPEG is typically 3–5× smaller at 85% quality. For screenshots with many colors, the reduction is usually 1.5–3×.
Use JPG/JPEG for photos and WebP as the modern alternative for everything. Use PNG only for images that need lossless quality or transparency. In 2026, WebP is the best format for most web use cases.