Every image tool, in your browser

Drop the image in and set a target. The compressor re-encodes at a series of quality levels, keeps the best result that fits under your cap, and shows the measured before → after on the card. JPG, PNG and WebP are accepted, up to 24 files per batch.

Use the custom target field and switch its unit to MB — presets cover 20 KB up to 2 MB, and the custom value takes anything beyond that. A phone photo of 3–10 MB usually lands under 1 MB with no visible change at screen size.

Bytes always cost something, but the engine spends them carefully: it re-encodes at the highest quality that still fits your cap, so a small reduction is visually identical. A resolution step is used only when quality alone cannot reach the target, and the card says when that happened.

Use the width and height limiter, which caps the pixel dimensions while preserving the aspect ratio, so nothing stretches. Resizing does discard pixels, so a large cut changes fine detail — but a sensible downscale stays sharp on screen.

Type the number into the custom target, or pick a preset page: 20 KB, 50 KB, 100 KB, 200 KB or 1 MB, each with the limit already selected. If the cap is out of reach for that image, you get the smallest workable result and the reason — never a false success.

A JPEG is re-encoded at the quality level that fits your target, and the output stays a JPEG. For a large reduction the file is also scaled down a step at a time, because no amount of quality tweaking alone closes a 20× gap.

PNG is already compressed, so re-encoding it at the same size often gains little. The tool can scale the image down, or offer a WebP version that keeps transparency, and flattening a transparent PNG to JPEG happens only if you choose it explicitly.

Because the detail in that particular image fights the cap. Fine texture, noise and sharp edges are expensive to store, and some images simply cannot hit 20 KB and stay readable. The result is then a best-effort file with the smallest size that was achieved, plus the reason.

Yes. Set the width or height limiter and a target at the same time: the engine resizes first, then compresses to the cap, keeping the aspect ratio intact. That is the combination most form portals need.

Open the page in Safari, tap Choose files and pick the photo from your library, set the target and compress. The result downloads straight to your Files with its measured size in the name — no app to install and no upload to wait for.

JPG, PNG and WebP, up to roughly 40 megapixels each. GIF, SVG and video are not supported, and a batch holds 24 files. Anything larger or in another format needs a different tool.

In any editor, you would resize the canvas or re-export at a lower quality — and then guess whether you hit the number you needed. This tool automates the same search: it measures every candidate, keeps the best one under your cap and shows you the exact output size.