How to convert PNG to JPG locally without uploading the image
When JPG is better than PNG, how to choose quality, and why local browser conversion is safer for work images.
PNG is useful for interface graphics, screenshots and images with transparency. For photos, though, it is often too heavy: one picture can take several times more space than a JPG saved at a reasonable quality level.
Open the PNG/JPG converter, add a file and choose JPG as the output format. Processing happens in the browser: the file is not uploaded to a server, and the new image is created through canvas inside the tab.
When JPG is the better choice
JPG works well for photos, previews, product images and large banners without transparency. It uses lossy compression, so you can reduce file size while keeping visual quality acceptable for normal page viewing.
Keep PNG for logos, icons, diagrams, UI screenshots and images where sharp edges or transparent backgrounds matter. If you need transparency, JPG is not the right format because it cannot store an alpha channel.
How to choose quality
For most web images, start around 80-90 percent. If the result is still too heavy, lower quality gradually and check the preview. Photos usually tolerate compression better than text, thin lines and screenshots.
If letters or edges start showing visible artifacts, return to PNG or raise the JPG quality. The goal is not the smallest possible byte count, but a practical balance between weight and readability.
Why local processing helps
Work images often contain personal photos, client materials, dashboard screenshots or unpublished mockups. A simple format change does not need an external upload. A local converter keeps the file on your device and downloads the result directly from the browser.
Questions
Are files uploaded to a server?
No. The imgify converter reads the image in your browser, draws it to canvas, and saves the new file locally.
Why does a transparent PNG get a white background after JPG export?
JPG does not support transparency, so transparent areas are filled with white before saving.