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Compress an image

Choose a picture and the target maximum size. This tool tries multiple JPEG qualities and dimensions to approach the requested KB.

Workspace

Runs locally in your browser. No file upload.

Private, on-device processing
↑Drop a file here or choose oneRead locally · No upload · Size limits vary by tool

No file selected

Select a file or paste data to begin.

Output and diagnostics appear below after processing.

How it works

A binary search explores JPEG compression quality, and progressively reduces pixel dimensions if needed. The output is a standard JPEG. This is useful for strict online application or form attachment limits, where oversized pictures are rejected.

Important limitations

JPEG compression is lossy and transparency becomes white. Some images cannot reach the exact target; the actual result size is displayed. HEIC support depends on whether your browser can decode the source.

Frequently asked questions

Are my files uploaded?

No. The file is processed in your browser. This version does not transmit user file content to any server.

Is compress image to 100kb (or any size) free?

Yes. The browser processing tools are free and do not require an account or API key.