Image Converter

How to use Image Converter

1. Choose your image.
2. Pick the target format. For WebP you can tick Lossless WebP to keep every pixel exactly; the quality slider is then ignored and the file is larger.
3. Convert and download — compare the file size before committing to it.
4. JPEG has no transparency; converting a transparent PNG to JPEG fills the transparent areas.
5. Every JPEG save re-compresses, so avoid repeated round trips.
6. Conversion runs in your browser — nothing is uploaded.

Choose by content, not by habit

JPEG is lossy and built for photographs: smooth tonal gradients compress beautifully, and its artefacts hide in detail. PNG is lossless and built for flat colour, sharp edges and transparency — screenshots, logos, line art, anything with text in it. Put a screenshot through JPEG and the text grows coloured fringing; put a photograph through PNG and the file is several times larger for no visible gain. WebP does both: lossy for photographs and, with Lossless WebP ticked, lossless for graphics. It is typically 25–35% smaller than the equivalent JPEG or PNG and is supported by every browser in current use.

Lossy conversions do not undo

Converting JPEG to PNG does not restore anything — it losslessly preserves the artefacts already baked in, in a larger file. Worse, converting a JPEG to a JPEG re-compresses it, and every generation degrades further, which is the visible decay in images that have been saved and re-shared many times. Always convert from the highest-quality original you have, and never use a lossy format as a working file.

Transparency survives only some routes

JPEG has no alpha channel, so converting a transparent PNG to JPEG fills the transparency. This tool fills it with white and tells you so; other software may use black, which is a frequent unpleasant surprise with logos. PNG, WebP and AVIF all support alpha. If you need transparency and small files, WebP is the answer; if you need transparency and maximum compatibility with very old software, PNG.

Where AVIF and SVG fit

AVIF compresses better than WebP again, often dramatically, with browser support now effectively universal but encoding that is slower and tooling that is patchier. SVG is not comparable: it is vector, so it scales to any size without loss and should be the format for logos and icons wherever you have the original artwork. Converting a photograph to SVG is not meaningful; converting a logo to PNG throws away its main advantage.