Compress an image to 100 KB
100 KB is the internet’s favourite round-number limit: UPSC caps signature uploads at 100 KB, job boards and government e-services use it for documents and photos, and countless CMSes enforce it for editorial images. Whatever sent you here, the preset below is ready.
Everything runs client-side. Drop the image, watch the Network tab if you’re curious — no bytes leave your machine.
Drop images here — or click to browse, or paste with Ctrl+V
JPG · PNG · WebP — processed on your device, never uploaded
How it works
- Open this page — the compressor is already set for “Compress image to 100 KB”.
- Drop your image into the box, click to browse, or paste it with Ctrl+V.
- The tool re-encodes the image on your own device until it fits the target — nothing is uploaded.
- Check the preview and file size on the result card, then download.
What fits in 100 KB
Photos up to ~1200 px on the long side: very good quality. For typical web display (which rarely exceeds 1200 px), 100 KB is close to a sweet spot for JPEG.
Full-width hero images at 1600+ px: acceptable but visibly compressed in detailed regions; choose WebP output or a larger target if your destination allows.
Documents, signatures, logos: trivially — with budget to spare for generous dimensions.
Getting the dimensions right
For web publishing, resize to the largest dimension your layout actually renders (often 1200 px), then compress. Oversized dimensions are the top reason a 100 KB image looks worse than it should.
Frequently asked questions
Is 100 KB “good enough” image quality for a website?
At sensible dimensions, yes — most professionally optimized web images land between 30 and 150 KB. Page-speed tooling tends to flag images above ~200 KB, so 100 KB per image is a healthy budget for fast pages.
How does the tool hit the target so precisely?
It binary-searches the JPEG/WebP quality parameter: encode, measure, adjust, repeat — about seven rounds — then keeps the highest quality that fits under your target. Because it runs locally, those seven encodes take a fraction of a second.
Will my image be exactly 100 KB?
It will be as close to 100 KB as possible without going over — typically within a few percent. Upload validators care about “under the cap”, and that’s guaranteed.