How do I compress an image to a target size?

Open the compressor, drop your images, switch the mode to Target size and enter a value in KB. It finds the best quality that fits under your target.

Is it free and private?

Yes. It is free with no watermark, and images are compressed in your browser without being uploaded.

Compress

Compress Image

Q: Can I compress to under 100 KB?

Yes. Enter 100 as the target size in KB and the tool will compress each image to fit under it.

Make JPG, PNG and WebP images smaller — even down to a specific file size like under 100 KB. Free, private and right in your browser, with batch support.

Open the compressor →

Compress to an exact target size

Need a photo under 100 KB for a form, a forum, or a job application? Switch the mode to Target size and type a number in kilobytes. ImageBloom automatically searches for the highest quality that still fits under your limit, so you get the smallest acceptable file without guesswork.

How to compress an image

1. Click Open the compressor above. 2. Drop your images (any mix of JPG, PNG or WebP). 3. Use Quality for a simple slider, or Target size to hit an exact KB limit. 4. Optionally resize to smaller dimensions for even bigger savings. 5. Download individually, all at once, or as a ZIP.

Tips for the smallest files

Converting to WebP usually gives the best size at a given quality. Resizing a huge photo (for example capping the width at 1600 px) is often the single biggest saving. For photographs, a quality of 75–85% looks great while being far smaller than the original.

How to compress without ruining quality

Most images can be made several times smaller with no visible difference. The two biggest levers are choosing an efficient format (WebP or a well-tuned JPG) and resizing huge photos down to the size they are actually displayed at. A 4,000-pixel phone photo is far larger than any web page needs.

If you have a strict limit — say under 100 KB for a form — use the target-size option and let the quality adjust automatically until the file fits. Everything is processed in your browser, so even private photos are never uploaded while you compress them.

FAQ

Frequently asked questions

Is the image compressor free?

Yes — free, no sign-up and no watermark.

Are my images uploaded anywhere?

No. Compression happens in your browser, so your images never leave your device.

Can I compress to under 100 KB (or any size)?

Yes. Choose Target size mode and enter your limit in KB; the tool fits each image under it.

Will compressing ruin the quality?

Not noticeably at sensible settings. Around 75–85% quality usually looks identical to the original while being much smaller.

How do I get an image under 100 KB?

Choose JPG or WebP, turn on target size and enter 100 KB. If the photo is large, also set a maximum width like 1600 px so it can reach small sizes cleanly.

Will compressing blur my image?

Not at sensible settings. Around 75–85% quality looks identical; only very low settings introduce visible artefacts.

More image tools

PNG to JPG · Image to WebP · All-in-one image compressor & converter