Compress Image Without Uploading

100KB is the single most common image size limit on the internet. It appears in upload forms, content guidelines, performance budgets, and platform specifications more often than any other round number, which makes it the default target most people are looking for.

The budget is generous enough for real quality. A photograph at 1200×800 to 1600×1000 pixels typically fits at a quality level where compression is not visible in normal use, and graphics or screenshots can go considerably larger because flat colour costs very little to encode.

This page is best when privacy matters and you do not want image files sent to a remote compression service.

Every browser ships with an image decoder and a WebP encoder already built in — the same machinery it uses to display and cache images on any page you visit. This tool simply calls that machinery directly. Your file is read into memory, drawn onto an off-screen canvas, and re-encoded, all inside the browser tab.

Nothing is transmitted because nothing needs to be. There is no upload endpoint, no temporary storage bucket, no processing queue, and no retention policy, because there is no server component at all. You can verify this yourself: open your browser's network inspector, compress an image, and observe that no request is made. Disconnect from the internet after the page loads and it still works.

That architecture matters for the files people most often need to compress — identity documents, medical images, unreleased product shots, signed contracts, and client work under NDA. With a server-based tool, you are trusting a privacy policy. Here there is nothing to trust, because the file never leaves the machine.

This page accepts JPG, JPEG, PNG, and WebP inputs, which covers essentially every image you are likely to encounter outside of specialist workflows. Each behaves a little differently under compression, and the tool adapts to what you give it.

Output is always WebP. That choice is deliberate: WebP reaches a given target size at higher visual quality than JPG or PNG can, which means the file you download looks better than the equivalent-sized file in an older format would.

Upload JPG, JPEG, PNG, or WebP images. Downloads are optimized WebP files.

Balanced mode with resize at around 1600px wide is the general-purpose answer. For images that will be displayed small, drop the resize width and you will land far below 100KB with excellent quality — there is no benefit to using the whole budget if you do not need it.

Use Balanced mode first. If the output is still too large, enable resize with a 1200px or 800px max width.