Image tools
Convert between formats, resize, crop and hit an exact file size.
Image work splits into three questions: what format, what dimensions and what file size. This category covers all three — converting between JPG, PNG, WebP, AVIF and HEIC, resizing or cropping to fixed dimensions, and compressing down to a target the upload form will actually accept. Everything is decoded and re-encoded by your browser, so large photos stay on your disk and nothing waits in a queue on someone else's server.
Tools in this category
16About these tools
Choosing a format is choosing a trade-off
JPEG is still the safest bet for photographs anywhere. PNG is for flat graphics, screenshots and anything needing real transparency. WebP is roughly 25-35% smaller than JPEG at similar quality and is supported everywhere that matters today. AVIF compresses harder still but encodes more slowly. HEIC is what an iPhone hands you, and converting it to JPEG is usually the fastest way to make a photo open on someone else's computer.
Hitting an exact file size
Upload forms rarely ask for a quality setting; they ask for "under 100 KB" or "under 2 MB". Getting there by hand means exporting, checking, adjusting and exporting again. The size-targeted compressor does that loop for you: it searches the quality range until the encoded result lands under your limit, then hands you the largest version that still fits.
Resizing without ruining the picture
Scaling down is safe and it is also the single most effective way to reduce file size, because bytes scale with pixel count rather than with perceived quality. Scaling up cannot invent detail that was never captured. If you need both a smaller pixel size and a smaller file, resize first and compress second — in that order the compressor has far less data to work with and produces a cleaner result.