PNG to JPG Converter

What changes when PNG becomes JPG

PNG is a lossless format often used for screenshots, illustrations and graphics. JPG can be useful when an application requests a photograph-style image, but it uses lossy compression and cannot store transparency. Renaming .png to .jpg does not convert the image.

Text, thin lines and high-contrast edges may look softer after JPEG compression, and a small PNG is not guaranteed to become smaller. Use the preview and actual output size to decide whether JPG is appropriate. Keep PNG when sharp graphics or transparent edges matter.

Choose a background for transparent pixels

White is the default. Choose another solid background before converting if a form, slide or design needs a different color. Fully transparent pixels become that color, while partly transparent edges are blended over it. The checkerboard used by some image viewers is not image content.

Transparency is detected from the PNG color type or transparency table, including palette images. A PNG may contain an alpha channel even if all pixels happen to be opaque. The exported file is a real opaque JPEG, not a PNG renamed to .jpg.

Supported PNG images, color and orientation

Supported sources are static grayscale, RGB, palette and alpha PNGs with sample depths up to 8 bits. The tool checks chunk boundaries and checksums before decoding. Animated PNG (APNG), 16-bit samples, HDR markers, unsupported profiles and damaged structures are rejected rather than silently flattened or guessed.

Untagged images use the browser’s color interpretation. Tagged sRGB and validated matrix/TRC sRGB or Display P3 ICC profiles are supported; other gamma, chromaticity or video-color variants may require an SDR sRGB export. The result is a new 8-bit sRGB JPEG. Wide-gamut colors can change, and this is not a professional color-proofing workflow.

PNG EXIF rotation and reflection are applied explicitly once. Unrelated text, EXIF and other photo metadata are removed before decoding and are not copied into the result. Information visible in the pixels remains visible.

Control dimensions and JPEG quality

Original keeps dimensions within the output limits. Resize sets a longest edge from 1 to 4,096 pixels, keeps proportions and never enlarges the source. If original dimensions exceed the output limit, choose Resize explicitly; the tool does not quietly shrink them.

Quality 1–100 is an encoder setting, not a percentage of original detail. A higher value usually makes a larger file but cannot recover detail already missing from the PNG. Adjust size and quality, convert again and inspect the result before using it.

Batch PNG to JPG with bounded local processing

Up to 50 files, 20 MB per file and 100 MB per batch. Input images are limited to 16 megapixels and 8,192 px per side. JPG outputs are limited to 4,096 px per side and 16 megapixels. Results pause at 64 MB so you can save a part and continue. MB here means 1,024 × 1,024 bytes. Start with a small batch on phones.

Only successful results are downloaded. Failed images keep a reason and can be retried; a damaged file does not prevent other valid PNGs from converting. Cancel stops the current background worker and pending work. At the output budget, download the ZIP part, confirm it was saved and continue; old previews are released.

Privacy, offline use and failure recovery

Your files are inspected and processed on your device. No source files or results are uploaded. The website and image-processing resources still need to load; optional usage analytics runs only after consent and does not include file information.

PNG text and EXIF are not copied to JPG. Removing metadata does not remove a name, address or other visible information inside the picture. Program resources must load before the current tab can work offline; refreshing clears the session and may need a connection.

If a file fails, check the stated format, color, size or corruption reason. Export a still 8-bit SDR sRGB PNG if necessary. Lowering output dimensions cannot bypass the 16 MP source limit. If processing times out, try a smaller source or a small batch in a current browser.

Verify that your images stay on your device

Open your browser’s developer tools and the Network panel, then choose and convert an image. Site resources may load, but requests should not contain your file name, image bytes, or output. Optional analytics is off until you consent and excludes file details. Once all required resources have loaded, you can also test conversion with the connection turned off.