Compress Image to 100 KB
Compress a JPG or PNG to under 100 KB online free. Quality is lowered step by step (pixels kept) until the photo fits — for PRC, CSC and school e-forms. No sign-up, no watermark.
About Compress Image to 100 KB
Need a picture under 100 KB? This page opens the image compressor with the 100 KB target already set — upload your JPG, PNG, WebP or phone photo and click Compress. It is the quickest fix for signature and photo uploads on government e-forms.
Rather than guessing a quality setting, the compressor lowers JPEG quality one step at a time until the file is under 100 KB, keeping the original pixel size whenever possible; only if quality alone cannot get there does it scale the picture down, and it tells you when that happened. Output is JPEG by default (accepted by every portal) or WebP for an even smaller file. Photos are processed in memory and never stored.
How to compress an image online
- 1Drag and drop your image into the upload zone, or click it to browse for a file on your device.
- 2Choose an output format — WebP or AVIF for maximum savings, or keep JPEG/PNG if you need those exact formats.
- 3Adjust the quality slider. 70–85% is usually indistinguishable from the original at a fraction of the size.
- 4Click Compress and compare the before/after file sizes shown on screen.
- 5Click Download to save the compressed image to your device.
Frequently asked questions
How do I compress a photo to under 100 KB?
Upload the photo above — the 100 KB target is pre-selected — keep JPEG, and click Compress to under 100 KB. Download the result; the screen shows the final size and confirms it is under the limit.
Will the picture still look good under 100 KB?
For ID pictures, documents and most phone photos, yes: the tool keeps the pixel size and lowers quality gradually. Very large or very detailed photos may need to be scaled down to fit 100 KB; the result notes when that happened.
Does it keep the image dimensions?
Whenever possible. Dimensions are only reduced (in 15% steps) if the lowest sensible quality is still over the limit — and the result tells you if it was downscaled.
Are my photos stored?
No. Images are processed in memory and discarded as soon as the compressed file is delivered.
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