Everyday image sizing
Image Compressor to 10 KB
Preset and ready: drop a file and the output lands under 10 KB as JPEG — processed entirely in your browser.
Drop your image here or browse
JPEG, PNG, WebP — everything stays on your device
Why this exact limit matters
Ten kilobytes is the floor of practical image compression — the point where every encoder is fighting physics. Whatever asks for it (a strict upload form, an embedded system, a barcode-adjacent workflow) measures bytes exactly, so the only tool that helps is one that takes the byte count as its input. Quality sliders cannot promise a number; a target-driven search can.
Naming the number you need and letting the encoder search for the best quality underneath it is faster and more predictable than any manual slider session. 10 KB is one of the tightest limits you will meet online, and this page is preset to exactly that ceiling.
How to compress to 10 KB
- Drop your image into the box above — it stays on your device.
- Confirm the target: under 10 KB as JPEG.
- The MozJPEG encoder searches its quality range so the JPEG output lands just under your limit. Dimensions are left at their original size unless the target demands otherwise.
- Preview the result, compare it with the original if you want, and download — the filename carries its actual size.
Tip: When you do not know the exact limit, start from the file size you have and halve it — one or two rounds usually lands in the accepted range.
Measured: 10 KB on a real photograph
Our standard 914 KB, 1500×1800 portrait file against a bare 10 KB ceiling:
Source file
914 KB
1500×1800 JPEG
Output
9.2 KB
99× smaller
Quality setting
q1
encoder floor
Resolution
1500×1800
unchanged
Ninety-nine times smaller with the frame intact — and honestly, quality 1 is what that arithmetic allows for a photograph at this resolution. The productive move at 10 KB is shrinking the canvas: on a 24 MP original the engine does exactly that on its own (down to 1974×1316 before the target becomes reachable). Fewer pixels, more life per byte.
Frequently asked questions
What kind of image still looks good at 10 KB?
Line art, logos, scans of text and signatures — content with large flat areas. Our signature test file reaches 9.8 KB at quality 50 and looks untouched. Photographs are the hard case; flat graphics are nearly free.
Why not just use a lower resolution in the first place?
That works when you control the capture. Most people arrive with a phone original and a form that says 10 KB — this page exists for exactly that intersection: bring the big file, state the number, receive the compliant one.
Is there any format that fits photos in 10 KB better?
WebP saves another 25–35% at equal quality — occasionally the difference between passable and rough at this budget. It is offered as an output here; use it when your destination accepts the format.
Does it work on my phone?
Yes — the whole pipeline runs in the browser, including on mobile. There is no app to install and no upload bandwidth to wait for.
Why JPEG and not another format for my upload?
JPEG is the most universally accepted image format on upload forms and gives the smallest files for photographs. If your destination accepts only "images", JPEG is the safe choice.
Do I need an account or app install?
No account, no install, no watermark. The page you are on is the whole tool.