Compress Image

Shrink an image — pick quality, download the smaller file. Nothing uploaded.

Stays on your device. This tool runs in your browser — nothing you paste or open ever leaves it. Nothing uploaded, nothing to leak.

Image
Get under KB
Run the tool first — there’s no result to send yet.

How to compress an image

Add your image and pick a quality — Recommended suits most photos, Smaller squeezes hardest, Higher keeps more detail — then press Compress. You will see how much smaller it got, and the file downloads. PNGs with transparency are saved as WebP so the transparency is kept.

Compress Image — TechWhack Score

9.8/10
  • Privacy 10/10

    Your image is re-encoded in the browser and never uploaded.

  • Speed 10/10

    Compresses and shows the result instantly.

  • Features 9/10

    Shows the before-and-after size so you can see exactly what you saved, and hands back the original if it can’t make it smaller.

  • Free 10/10

    No sign-up, no watermark, no daily limit.

Verdict: A compressor that proves its work with a real before/after size — and never uploads the photo to do it.

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Compressing an image re-encodes it at a smaller file size while keeping it sharp. Add a JPG, PNG or WebP, pick a quality, and download — you will see the before and after size. It runs entirely in your browser, so nothing is uploaded.

Why compress in the browser

The image is re-encoded on your device, so it never leaves your computer — no upload, nothing stored. Handy for getting a photo under an email or upload size limit without a desktop app.

FAQ

Why does my JPG look worse after compressing it?JPG uses lossy compression, so each save discards some detail, and re-compressing an already-compressed photo stacks blocky and blurry artifacts from the previous round. Start from the original (on an iPhone that is the HEIC in your camera roll) rather than a copy that was already saved through chat apps.
What is the difference between compressing a JPG and a PNG?JPG compression is lossy and excels at photographs, dropping detail the eye barely notices to get small files. PNG is lossless and best for screenshots, logos, and sharp text or transparency; it stays crisp but the files are larger, so the gains from compressing it are smaller.
Why did the tool keep my original file instead of shrinking it?If a file is already well-optimized, re-compressing would add artifacts without saving meaningful space, so the original is returned instead. The before/after sizes are shown so you can see when there is no real gain to be had.
Will compressing strip the GPS and camera data from my photo?Compression focuses on image data and typically drops most embedded metadata as a side effect, but it is not a guaranteed scrub. If your goal is specifically to remove location and camera info, use a dedicated EXIF remover to be sure.
Are my photos uploaded when I compress them?No. Compression runs in your browser, so the image never leaves your device and nothing is stored. That keeps private or client photos secure while you optimize them.