PNG, JPG or WebP: which should you use for screenshots?

Choose the format for the screenshot’s destination and content. A dashboard full of small text has different needs from a large photographic background. Transparency, upload requirements and download size matter too. There is no single format that gives the best result for every screenshot.

Keep an original copy, then compare exports at the same dimensions. ScreenLab’s Image Converter can produce PNG, JPG and WebP locally in your browser. Your actual files provide a better answer than an assumed compression percentage.

Use PNG when text and transparency matter

PNG is a useful starting point for screenshots with small text, sharp lines, flat interface colours, or transparent areas. The Image Converter’s PNG export does not use the JPG/WebP quality setting; the quality control is disabled for PNG.

Keep Original size while making your first comparison. Resizing changes the pixels regardless of the output format, so a smaller PNG is not an unchanged copy of the source. Exporting a previously compressed JPG as PNG also cannot recover lost detail.

Try JPG for opaque images with photographic content

JPG is worth comparing when your screenshot includes substantial photographic content and the destination accepts it. The tool exposes a quality setting so you can balance visible changes against file size. Start with the default, then inspect small text and high-contrast edges before reducing it.

JPG does not keep transparency. ScreenLab flattens transparent areas onto white when creating a JPG. Choose PNG or WebP if a cut-out graphic must remain transparent on a coloured background.

Compare WebP when your destination supports it

WebP is another option for web images and can retain transparency. ScreenLab’s WebP workflow uses the quality control. Check the exported result rather than treating the format name as a guarantee of lossless output or the smallest possible file.

Confirm that the app, website or publishing workflow receiving the screenshot accepts WebP. If it requires JPG or PNG, use that required format instead of adding an unnecessary conversion step later.

Run a fair comparison with your screenshot

1. Open Image Converter and select the original screenshot. Keep Resize at Original size and Padding at None so the first comparison uses matching dimensions.

2. Export PNG, then JPG and WebP. Download each result before switching the output settings. Record the format, quality setting, pixel dimensions and reported file size.

3. Inspect the same areas in every version: the smallest text, thin icons, gradients, photographic detail and any transparent edges. Check them at normal viewing size and in the destination app.

4. Choose the smallest result that meets your actual clarity and compatibility needs. If it is still too large, try a smaller dimension and repeat the check.

Conversion and compression are different workflows

Use Image Converter to change formats. Use Image Compressor when your primary goal is reducing size. In the compressor, a PNG quality setting below 100% reduces its colour palette and can change the image; do not assume that every operation producing a PNG preserves all colours. Neither workflow guarantees a specific file size or percentage saving.