Image Format Converter
Convert images between PNG, JPG, and WEBP — instantly, and entirely in your browser.
Drop images here or click to browse
Supports JPG, PNG, WEBP — multiple files at once
All conversion happens in your browser. Your images are never uploaded.
The three dominant image formats — PNG, JPG, and WebP — each exist for a reason, and choosing the right one for a given image is the difference between a crisp, small file and a bloated or fuzzy one. JPG is built for photographs, PNG for graphics with sharp edges and transparency, and WebP for doing both jobs at a smaller size. Converting between them is a routine need: a screenshot saved as JPG that should be PNG, a photo saved as PNG that is needlessly huge, or anything that should be WebP for the web. This tool converts between all three entirely in your browser.
How the converter works
Select an image and choose the target format, and the tool re-encodes it through your browser's Canvas engine into PNG, JPG, or WebP. Converting to a lossy format like JPG or WebP lets you set a quality level; converting to PNG produces a lossless result. Everything happens on your device — the image is never uploaded — so even sensitive files stay private, and the conversion is instant with no round-trip to a server.
Which format for which job
PNG → lossless, transparency, sharp edges
best for: logos, icons, screenshots, text
worst for: photos (huge files)
JPG → lossy, no transparency, smooth gradients
best for: photographs
worst for: text, logos (edge halos)
WebP → lossy or lossless, transparency, small
best for: almost everything on the web
caveat: not readable by very old softwareThe critical thing to understand is what conversion can and cannot recover. Converting a JPG to PNG does not restore quality — the data JPG discarded is gone forever, and the PNG just losslessly stores the already-degraded image, usually at a larger size. Conversion changes the container and how future saves behave, not the information already lost. This is why you convert toward your needs early: keep a PNG or WebP master while editing, and export to JPG only as a final step, never as an intermediate one.
What to know about format conversion
- 1Converting JPG to PNG does not improve quality. A JPG has already discarded data permanently, and wrapping it in a lossless PNG only preserves the degradation at a bigger file size. Conversion cannot recover what was lost — if you need quality, you need the original source, not a format change of a compressed copy.
- 2Only PNG and WebP support transparency; JPG does not. Converting a transparent PNG logo to JPG replaces the transparent areas with a solid background, usually white, which ruins it for overlaying on colored backgrounds. If your image has or needs transparency, JPG is never the answer — stay in PNG or WebP.
- 3WebP is the modern default for web images. It handles both photographic and graphic content, supports transparency, and produces smaller files than JPG or PNG at equivalent quality, with support in every current browser. Unless you must serve very old software, converting web images to WebP is usually a straightforward win in load time.
- 4Convert to your final format last, not while editing. Every lossy save degrades the image, so editing a JPG through several saves compounds the loss. Keep your working file lossless — PNG or a native editor format — and export to JPG or lossy WebP only once, at the end. Converting mid-workflow bakes in avoidable quality loss.
- 5The format does not fix a wrong-sized image. Converting a 4000-pixel photo to WebP still leaves an oversized file if it will be displayed at 800 pixels. Resize to the intended display dimensions first, then convert — format choice and dimension are separate levers, and the biggest savings usually come from getting the size right.
Frequently asked questions
Does converting a JPG to PNG make it higher quality?
No — this is the most common misconception about conversion. A JPG has already permanently discarded image data through lossy compression, and converting it to PNG only stores that already-degraded image losslessly, typically at a larger file size. The lost detail cannot be recovered by a format change. To get higher quality you need the original, uncompressed source; converting a compressed file never restores what compression removed.
Which format should I use for the web?
WebP is usually the best choice for modern web use: it compresses smaller than both JPG and PNG at equivalent quality, supports transparency, and works in every current browser. Use JPG as a fallback for photographs where maximum compatibility matters, and PNG for graphics with transparency or sharp text if you cannot use WebP. For most sites today, converting images to WebP is a simple performance improvement.
Why did my logo get a white background after converting to JPG?
Because JPG does not support transparency, so when you convert a transparent PNG to JPG, the transparent areas have to be filled with a solid color — usually white. This ruins a logo meant to sit on colored or varied backgrounds. If your image has transparency, never convert it to JPG; keep it as PNG or convert to WebP, both of which preserve the transparent areas.
Is my image sent to a server during conversion?
No. The conversion runs entirely in your browser using the Canvas API, so the image is processed locally and never uploaded, logged, or stored. You can confirm this by disconnecting from the internet; the converter still works because no server is involved. This keeps private images, documents, and screenshots on your own device throughout the process.
What is the difference between lossy and lossless conversion?
Lossless conversion (to PNG, or lossless WebP) preserves every pixel exactly, while lossy conversion (to JPG, or lossy WebP) discards some data to achieve a smaller file. Converting to a lossless format never adds quality but never removes it either; converting to a lossy format shrinks the file at some quality cost. For photos the lossy trade is usually invisible and worthwhile; for logos and text, lossless is the right choice to keep edges sharp.