Compress Image to 100KB Online Free

Upload images online for long enough and 100KB starts to feel like the house standard. It's the figure passport and visa portals reach for, the one most government and PSU forms settle on, and the ceiling quietly baked into countless content systems. There's logic behind its popularity: a hundred kilobytes is the point where a file is cheap to store and fast to send, yet still large enough to look properly good. PixelResize brings any JPG, PNG or WebP to roughly that mark and reports the exact size, so your first upload attempt is usually also your last.

Since the limit is fairly generous, you rarely have to give up much to meet it — as long as you don't squander the room. The classic blunder is crushing a full-resolution photo straight down to 100KB; the compressor is forced to bin a mountain of data and the picture comes out soft. Scale the image to the size it'll genuinely be shown or printed at first — for a passport upload that may be only a few hundred pixels on a side — and 100KB turns into ample headroom for something sharp and free of artefacts. Resize first, compress second.

Format earns its keep here too. Continuous-tone photographs belong in JPG or WebP, with WebP usually producing the best-looking result at a given size; keep PNG for screenshots, logos and anything needing hard edges or transparency. Aim a PNG at a photo and it'll swallow your 100KB for nothing in return.

There's a privacy angle that's easy to skip past, and it's the whole reason this page exists for so many people: a passport photo or a scanned ID is sensitive, and plenty of online compressors quietly ship your file off to their servers to do the job. This one doesn't. The image is handled inside your browser, on your own hardware — never uploaded, never stored, gone the moment you close the tab.

It's free, unwatermarked and uncapped, so if a portal rejects your file you simply tweak it and export again. Resize, compress toward 100KB, hold it up against the original, and download a photo that looks the part and clears the cap. The workbench above is already preset to this target.