MiniPx vs ImageResizer.com

ImageResizer.com has been doing this since 2012 and is straightforward about how it works: your image is uploaded over an encrypted connection, resized on their servers, and deleted automatically — within six hours, or eight for JPEG files. No registration, no watermarks, free.

That is a reasonable and honestly-stated privacy posture. It is worth being precise about what it does and does not mean.

Deletion is a promise; not uploading is an architecture

“Deleted within six hours” means the file exists on someone else’s infrastructure for up to six hours. During that window it is subject to their operational security, their backup behaviour, their logs, and any legal process that reaches them. None of this suggests bad faith — it is simply the shape of server-side processing, and every upload-based tool carries it.

MiniPx resizes with the browser’s own imaging engine. The file is read from disk into the tab and written back out. There is no request carrying it anywhere, so there is no retention window, no deletion policy to trust, and nothing to breach. You can prove it: load the page, switch off your network, and resize — it still works.

Where ImageResizer.com is the easier choice

It is genuinely simple, and its bulk resize has no small free cap the way MiniPx’s free tier does at 5 files per batch. For a large one-off batch of ordinary photographs where privacy is not a concern, that is a fair reason to use it.

Where MiniPx does more

Compression to a target file size, not just resizing to dimensions — which is what portals with KB limits actually require. Format conversion including HEIC input and WebP or AVIF output. Background removal and passport photo generation. And offline operation, which no upload-based tool can offer by definition.

Competitor details checked July 2026. Plans and limits change — verify against their own pricing page before deciding. Other comparisons: Optimizilla · Caesium, which runs locally on your desktop · remove.bg