Start with the problem you are trying to solve
There is no single “best” image format. The right choice depends on whether you care most about compatibility, transparency, editing quality, web performance, file size, or long-term storage. These guides explain the trade-offs in plain language and show where conversion is useful—and where it can make things worse.
Choose between smaller photographic files and lossless graphics with transparency.
WebP vs AVIFCompare two modern web formats for compression, quality, workflow support, and compatibility.
HEIC explainedUnderstand why phones save HEIC, when to keep it, and when JPG or PNG is easier to share.
Image quality & compressionLearn what the quality slider changes, why recompressing repeatedly hurts, and when lossless output matters.
A practical rule
Keep your best original whenever possible, then create converted copies for specific destinations. A website, messaging app, print workflow, document system, and design tool may all have different requirements. Converting a copy gives you compatibility without throwing away the source file you may need later.
Convert supported images locally in your browser.