LighterPics
English

Convert PNG to JPG

Change between JPG, PNG and WebP.

Drop an image here

JPG · PNG · WebP · basic HEIC (Safari) · Up to 20 MB · 25 megapixels

Your image stays on your device.

How to change image format

  1. Choose one still JPG, PNG or WebP image.
  2. Choose the output format. Pixel dimensions stay the same; camera orientation is applied.
  3. Convert, check the preview and file size, then download.

Which format should I choose?

JPG suits photos without transparency. PNG keeps transparency without adding lossy compression. WebP is useful for web images and supports transparency. WebP output requires a browser with a WebP encoder.

Does conversion make the file smaller?

Not always. The encoded file can be larger, especially when converting a photo to PNG. Check the actual size before downloading.

What happens to a transparent PNG?

Choose a format for the destination. PNG or WebP can keep a badge transparent; JPG needs an opaque background. Renaming .png to .jpg does not convert an image.

Mountain badge surrounded by transparency
Original960 × 640 px · 36.293 KBDownload example (PNG)
The same badge converted to JPG with a white background
Result960 × 640 px · 19.563 KBDownload example (JPG)

Select the original transparent PNG and choose JPG. The result stays 960 × 640, but transparent areas become white. The checkerboard behind the original is only a preview background.

Here JPG is smaller, but discards transparency and uses lossy encoding. Converting it back to PNG cannot restore transparency or lost detail. Compare the downloads at full size.

Original illustrations created by LighterPics and processed with this tool. Real example files, not predictions for your image. File sizes can vary by browser.

Measured: · Chromium 145.0.7632.6

When should I keep PNG?

When transparency or sharp graphic edges matter. Photos often become larger in PNG. Choose JPG if the destination accepts it and transparency is unnecessary; check fine text afterward.

Why can this browser not save WebP?

WebP export needs a browser encoder. Some browsers can display WebP but cannot create it through this tool. After an encoder error, choose PNG or JPG, or another browser with WebP output support.

PNG to JPG: photos shrink, screenshots may grow

We saved our 25 photos as PNG with the converter, then converted each PNG back to JPG at quality 92. We also converted 5 screenshots and 5 graphics that started as PNG.

Photos saved as PNG, then converted to JPG at 92

KindPhotosMedian PNGMedian JPGJPG as a share of the PNGRefused: PNG over 20 MB
Portraits69.08 MB764.4 KB12%0
Landscapes411.82 MB906.1 KB9%1
Night shots58.71 MB782.1 KB11%0
Close-up textures413.94 MB2.13 MB17%1
Food and products69.49 MB993.6 KB12%0

Across all photos the JPG was 7% to 19% of the PNG, and scored 0.974 to 1.000 against it.

Source: our test on 2026-11-10 (harness eacd79c, site code eacd79c), headless Chromium 145 on a desktop Mac, 25 CC0 photos. How we test

Screenshots and graphics, PNG to JPG

ImagePNGJPG at 92JPG at 80Similarity at 92
Badge with a soft shadow202.1 KB33.0 KB (16%)22.0 KB (11%)0.998
Chart42.9 KB69.9 KB (163%)53.3 KB (124%)0.999
Icon sheet72.3 KB79.2 KB (110%)56.4 KB (78%)0.999
Illustration49.9 KB47.0 KB (94%)34.5 KB (69%)1.000
Logo25.6 KB28.4 KB (111%)21.6 KB (85%)1.000
Article on a phone336.8 KB457.5 KB (136%)335.4 KB (100%)1.000
Code editor243.6 KB193.4 KB (79%)136.3 KB (56%)0.999
Dashboard114.1 KB115.0 KB (101%)88.3 KB (77%)0.999
Settings page, high density83.7 KB102.2 KB (122%)81.1 KB (97%)1.000
Spreadsheet253.7 KB433.9 KB (171%)327.8 KB (129%)0.999

Shares in brackets are of the PNG size. Our graphics have transparent areas, which JPG fills with white.

Source: our test on 2026-11-10 (harness eacd79c, site code eacd79c), headless Chromium 145 on a desktop Mac, 10 images we made. Similarity is our own 8×8-block luma score (SSIM): 1.000 means no visible change. How we test

How to convert

  1. Add the PNG above. JPG is selected for you.
  2. Keep quality at 92. A lower value makes a smaller file.
  3. Press Convert image and compare the size with your PNG.
  4. If the JPG is bigger, keep the PNG, or make it smaller as a PNG on the PNG compression page.
  5. Download the JPG.

When PNG to JPG goes wrong

My JPG is bigger than the PNG.

That happens with screenshots and flat graphics. At quality 92, 7 of our 10 PNG files grew, up to 171% of the PNG size. At 80, 2 grew. PNG stores flat colour and sharp text well, so keep those as PNG.

The page refuses my PNG as too large.

The limit is 20 MB per file. Photos get very big as PNG: ours ranged from 1.65 MB to 21.90 MB, and 2 of 25 went over. Export a JPG from the app that made the PNG instead.

The transparent background turned white.

JPG has no transparency, so this tool fills it with white. Some other converters fill it with black, a frequent complaint on developer forums (user reports, for example this Stack Overflow question). Keep the PNG if you need transparency.

Will a photo look worse as JPG?

A little, by our score: at quality 92 our photos scored 0.974 to 1.000 against the PNG, where 1.000 means no change. In exchange the file was a median 12% of the PNG.