Compress Image Online
Shrink any image to an exact KB target — without it ever leaving your device.
100% in your browser — files never uploaded
Results appear here the moment you add images.
How to compress an image to 100KB or any exact target size
Drop your image, switch to Target Size mode, and type the KB limit you need — 20KB, 50KB, 100KB, 200KB, anything. The tool runs a binary search across quality levels, re-encoding until the file lands at or just under your target. You get the highest visual quality that still fits the limit, instead of guessing with a slider. It works for government portal uploads, email attachments and web publishing alike.
Your images never leave your device
Most online compressors upload your files to a server, process them remotely, and keep a copy you can neither see nor delete. This tool runs entirely on the Canvas API inside your own browser, so image data never crosses the network. That makes it safe for ID documents, KYC photos and medical records — and faster too, because there is no upload or download wait.
JPG vs PNG vs WebP — which format compresses smallest?
For photographs, WebP is typically 25–35% smaller than JPG at the same visual quality, and JPG in turn beats PNG by a wide margin. PNG only wins for screenshots, logos and graphics with sharp edges or transparency. If your upload portal accepts modern formats, convert photos to WebP before compressing; if it demands JPG, Target Size mode still squeezes the most quality into your KB budget.
Frequently asked questions
Is this image compressor really free?
Yes. Compressing up to 3 images at a time is free forever, with no watermarks, sign-ups or daily limits. Pro exists only for power features like large batches and ZIP export.
Are my images uploaded to a server?
No. All compression happens locally in your browser using the Canvas API. You can verify this: load the page, go offline, and the tool keeps working.
How do I compress an image to exactly 100KB?
Choose Target Size mode, enter 100 in the KB field, and download. The tool automatically finds the highest quality that fits under 100KB.
Will compression make my image blurry?
At moderate settings the difference is invisible at normal viewing sizes. Very small targets trade visible detail for file size — the live preview shows exactly what you get before downloading.
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Data verified: 2026-06-11 · All processing happens in your browser — no files are ever uploaded.