Use this when a PNG is heavier than it needs to be, or when a form, CMS or marketplace only accepts JPG. Two things to know before you convert: transparent pixels become white, and the JPG quality is fixed at 85 with no slider. If your PNG is a flat-colour screenshot, read the file-size note below first, because JPG is not always the smaller choice.
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Overview
About PNG to JPG
What changes when a PNG becomes a JPG
PNG stores every pixel exactly and can carry a transparency (alpha) channel. JPG is lossy and has no alpha channel at all. Here, your PNG is decoded and re-encoded as a JPG at quality 85. Width and height are not changed.
Every transparent pixel is filled with white (#FFFFFF). Semi-transparent pixels, such as a soft drop shadow or an anti-aliased edge, are blended against that white. A logo with a shadow will therefore carry a pale halo if you later place the JPG on a dark background. There is no option to pick a different fill colour on this page. If you need one, put the PNG on that colour in an image editor first.
Photos and screenshots behave differently
JPG compression is designed for continuous-tone images such as photographs and gradients. Screenshots, charts and anything with small text or hairline edges are the opposite case: PNG compresses flat colour very well, while JPG spends its bytes on the edges and can leave faint speckling around letters. In our local test the same quality setting made one generated image about 89% smaller and another about six times larger:
| Test image (generated for this test) | PNG | JPG at quality 85 |
|---|---|---|
| 1200 × 800, gradients and noise | 2.22 MB | 245 KB |
| 1280 × 720, flat colours with small hard-edged text | 11.9 KB | 72.4 KB |
These figures come from images we generated and converted locally with this tool. They are examples only: not a benchmark, not a typical customer result and not a guaranteed ratio. Your results depend on the content. The useful takeaway is the direction: photographic PNGs can shrink a lot, flat graphics may not shrink at all.
When to keep the PNG instead
- The image needs a transparent background anywhere it will be used.
- It is a text-heavy screenshot or diagram you may crop or annotate later. Every JPG re-save loses a little more.
- It is a small, flat graphic where the PNG is already tiny.
- It is the master file. Keep the PNG and treat the JPG as a delivery copy.
If you are unsure which format fits a given image, the JPG vs PNG vs WebP guide compares them side by side.
Compatibility
Supported Formats
Accepts PNG (.png). Output is JPG. Limits: 20 MB per file, 12,000 px per side and 40 megapixels. One file is converted at a time.
Guide
How to Use PNG to JPG
- Choose a PNG file (up to 20 MB). The file is checked by its contents, not its extension, so a file named .png that is really a WebP is rejected.
- Click "Convert PNG to JPG".
- Download the result, named after your original with "-converted" added, and compare its size with the PNG before you delete anything.
Highlights
Features
- Fixed quality 85 The JPG is encoded at quality 85 out of 100. There is no quality control on this page, so if you need a smaller file afterwards, run the JPG through the JPG compressor.
- Predictable white fill Transparent pixels are composited onto white every time, so two conversions of the same PNG give the same result.
- Pixel dimensions unchanged Width and height stay as they were. Use the image resizer if you also need fewer pixels.
Applications
Use Cases
- Uploading to a job portal, marketplace or CMS field that only accepts JPG
- Shrinking a photographic PNG, such as a photo exported or screenshotted as PNG
- Flattening a transparent product cut-out onto a plain white background for a listing
Good to Know
Limitations
Transparency cannot be kept in a JPG. Quality is fixed at 85 and cannot be changed here. The JPG can be larger than the PNG for flat-colour images. Text chunks, EXIF data and embedded colour profiles stored in the PNG are not copied into the JPG, and no colour conversion is applied before the profile is dropped, so an image in a wide-gamut space such as Adobe RGB or Display P3 can look different afterwards. Converting the JPG back to PNG will not restore any detail the JPG compression discarded.
Files are processed on our servers and are not shared with third parties. Files are deleted as soon as processing or download finishes. Any leftover temporary file is removed automatically by our cleanup process within the configured retention period (60 minutes). See our Privacy Policy for full details.
Support
Frequently Asked Questions
What colour replaces the transparent parts of my PNG?
White (#FFFFFF). Partly transparent pixels, like soft shadows, are blended against white. You cannot choose another colour on this page; if you need one, place the PNG on that colour in an editor first and convert the flattened result.
Will small text in my screenshot look worse as a JPG?
It can. At quality 85 you may see faint speckling around letters and thin lines, especially when zoomed in. Check the result at 100% zoom. For text-heavy screenshots the PNG is often the better file to keep.
Why is my JPG bigger than the original PNG?
PNG handles flat colour and sharp edges very efficiently, while JPG does not. In our local test a generated 11.9 KB flat-colour screenshot became a 72.4 KB JPG. If the JPG is larger than the PNG, keep the PNG.
Can I choose the JPG quality?
No. The quality is fixed at 85. If you need a smaller file, compress the JPG afterwards with the JPG compressor.
Why was my .png file rejected?
Files are identified by their contents, not their name. Images saved from websites are sometimes WebP files with a .png extension. If that is the case, use the WebP to JPG converter instead.
Keep Going
Related Tools
- JPG to PNG Convert a JPG to a lossless PNG copy. It will not look sharper, and it will be larger.
- PNG to WebP Convert a PNG to lossy WebP at quality 85 while keeping transparency.
- Image Compressor Compress a JPG, PNG or WebP without choosing a tool. It detects the format and applies that format's fixed setting.
- JPG Compressor Re-save a JPG at fixed quality 75 for a smaller file. Pixel dimensions stay the same, and some files do not get smaller.
- PNG Compressor Lossless PNG re-save that keeps every visible pixel and transparency. It helps with uncompressed PNGs and often will not shrink others.
- Image Resizer Resize a JPG, PNG or WebP to a width or height in pixels. The aspect ratio is locked unless you unlock it.
- BMP to JPG Convert a BMP to JPG at fixed quality 85. Pixel dimensions stay the same and an uncompressed 24-bit BMP shrinks a lot.
- GIF to JPG Save a GIF as a JPG. An animated GIF becomes a still of its first frame, and transparent areas turn white.
- SVG to PNG Convert an SVG vector graphic to a PNG image, with transparency preserved.
- PNG to PDF Put one PNG on one PDF page without quality loss. Transparency is kept, and 16-bit or interlaced PNGs are rejected.
- Image Color Profile Checker Check an image's colorspace and embedded ICC profile — free and instant.
- JPEG XL to JPG / PNG Convert a still JPEG XL (.jxl) image to JPG or PNG at the same pixel size, with a WebAssembly decoder that runs in your browser. Animated or damaged files are refused clearly.