JPG vs PNG vs WebP: Which Export Is Best for Instagram?
Instagram re-compresses whatever you give it, but your starting format still decides how much detail survives that second pass. Hand it a clean file and it has more to work with; hand it an already-degraded one and the artifacts only get worse. Here is the quick guide to choosing.
JPG — the default for photos
JPG is the right call for almost every photograph. The files are small, and at 90% quality or higher the loss is effectively invisible once Instagram runs its own compression on top. Use it unless you have a specific reason not to — gradients in skies and skin tones hold up especially well.
PNG — lossless and flat
PNG shines on graphics, text, and hard edges, exactly where JPG's blocky artifacts would show up around the lines. The files are larger because nothing is thrown away, but the result is pixel-perfect. It is worth the size for logo grids, typographic puzzles, and anything with crisp solid color.
WebP — the smallest of the three
WebP delivers near-PNG quality at JPG-or-smaller file sizes, which is genuinely useful when you are working on mobile data or batch-exporting a full grid. Instagram supports it, and for most uploads you would be hard pressed to spot a difference from the original.
A simple rule of thumb
Photos and gradients go to JPG; text, logos, and flat color go to PNG; reach for WebP when file size is the priority. Get the format right at export and you sidestep most of the mush people blame on Instagram itself.
Tune it, do not guess
Feediz lets you pick any of the three formats and tune a quality slider, so you can trade size for sharpness exactly where you want the line. Export a couple of versions, compare them in the preview, and ship the one that looks right.