PNG to JPG Converter

What does PNG to JPG conversion do, and how does this tool work?

PNG to JPG conversion means saving a lossless PNG image again as a lossy JPG. People usually do it to shrink a file, to get past a form that accepts only JPG, or to slim down a PNG that contains a photo. The tool on this page does everything in your browser: your file never uploads to a server, and nothing stays anywhere.

Here is what the tool does:

• It reads the input format from the first bytes of the file, not from the extension. So a file named .png that is really something else still opens correctly.
• It applies the EXIF orientation, so a sideways phone photo comes out upright.
• However, it keeps the pixel size unchanged. To shrink the dimensions, switch to the Image resizer.
• It also leaves EXIF and location (GPS) data out of the new JPG. That helps your privacy, but camera details do not come along either.

Our rule of thumb is simple: photos as JPG or WebP, logos and screenshots as PNG or WebP. Below we explain why, and where the exceptions sit.

Why would you convert PNG to JPG in the first place?

Four situations come up most. First, PNG files that contain photos are bigger than they need to be. Design tools and screenshot apps often save PNG by default, yet MDN says JPEG suits continuous-tone images such as photographs, because the eye barely notices the detail it discards.

• File size: Converting a photo PNG to JPG usually shrinks the file noticeably. However, the content and the quality setting decide the exact ratio.
• Upload limits: Email attachments and application forms set size limits, and some accept only JPG.
• Compatibility: Almost every phone, app and platform can open JPG.
• Speed: A lighter file sends and loads faster.

One warning: this tool has no target KB field, only a quality slider. So if you must hit an exact size limit, open the Image resizer first and try its target file size tab. For website images, our guide on optimizing images for website speed and SEO goes deeper.

What happens to transparent areas when you convert PNG to JPG?

JPG carries no transparency; MDN notes that JPEG has no alpha channel. So when you convert a transparent PNG to JPG, the transparent areas need a colour. With JPG as the target, the tool shows Colour for transparent areas with three choices: White (the default), Black or Custom colour.

Pick the colour like this:

• Dark logo or text: keep White.
• White or light logo: choose Black or a dark Custom colour; otherwise the logo vanishes on a white backdrop.
• A specific backdrop: enter that backdrop's colour as the Custom colour, so no mismatched edge appears.

Semi-transparent pixels along the edges blend with the colour you choose. Therefore, if you prepare a JPG on white and later place it on a dark page, you may see a light fringe around the logo. Also, flattening goes one way: you cannot bring transparency back from the JPG, so keep your original PNG. If you need transparency, choose PNG or WebP, because both keep it.

How do you choose the JPG quality setting?

JPG is lossy: every save throws away detail the eye barely notices. The quality slider controls how much. The default in the tool is 92%, which is a balanced starting point for most photos. When the target is PNG, the slider disappears, because PNG is lossless.

Follow this order:

1. First, convert at the default 92% and read the before and after size on the row.
2. Then, if the size is still too high, lower the quality in small steps; the list converts again by itself when you change the setting.
3. Next, zoom into the preview and look at edges, text and smooth areas such as sky.
4. Finally, stop one step above the point where flaws start to show.

Always export from the original PNG. If you save a JPG again and again, the losses stack up. Also, turning a JPG back into PNG does not restore lost detail; it only makes the file bigger. So make every new version from the original.

Why does JPG struggle with text, screenshots and flat graphics?

JPG splits the picture into small blocks and simplifies the detail inside each block. In a photo you will not notice, because colours blend softly. Around text, icons and sharp edges, however, the simplification shows up as ringing, colour fringes and blocky patches. MDN also recommends lossless encoding for screenshots, diagrams, logos and line art, because blurring and coloured fringes around text and sharp edges are very visible.

So think twice before you convert these files to JPG:

• Text-heavy screenshots, tables and interface captures
• Logos, icons and flat colour drawings
• Fine line diagrams and charts

One test settles it: open the JPG at 100% zoom and look at the letter edges. If the edges look dirty, stay with PNG. If the file must also shrink, consider WebP; according to Google, lossy WebP is 25-34% smaller than comparable JPEG at an equivalent quality index. Still, WebP is lossy too, so check the edges just as carefully on graphics with text.

When should you keep PNG, or choose WebP instead of PNG to JPG?

Four questions settle it:

• Do you need transparency? If yes, choose PNG or WebP.
• Is there text or a sharp edge? If yes, stay with PNG; for the web, try WebP and check the edges.
• Does the recipient ask for JPG only? Then JPG is your only route.
• Is the file going on a web page? For photos, think JPG or WebP.

On Google's WebP page, lossless WebP comes out 26% smaller than PNG, and WebP supports transparency and animation. You can pick WebP under the target format buttons; if your browser cannot save WebP, the tool says so plainly instead of quietly giving you another format. However, if the receiving system rejects WebP, stay with JPG.

You can also jump straight to PNG to WebP, use JPG to PNG for the reverse direction, or open the general image converter.

Is PNG to JPG enough before you upload images to a website?

On its own it is not, because the tool leaves the pixel size alone. A PNG that is 4000 pixels wide stays 4000 pixels wide as a JPG. For the web, follow this order: first bring the size down to the place where the image will appear, then pick the format, and last tune the quality.

The reason is simple. web.dev aims for a Largest Contentful Paint under 2.5 seconds for at least 75% of page visits. A big hero image can be the largest content element on the page, so the right size and a light format directly affect that time. For details, read our Core Web Vitals guide and our article on how site speed affects SEO.

Also, to measure the whole page, run the SEO checker. If you see problems beyond image weight, you can reach our team through the SEO consulting page.