Free Image Converter & Compressor Online

JPEG compression works by averaging groups of pixels that look similar. At 80% quality — the default — those differences are genuinely invisible unless you zoom in to 400% and compare two versions side by side. You're storing less data because your eyes weren't using it anyway. For photos, this trade-off is almost always worth it.

Apple switched to HEIC with iOS 11 because it produces photos at roughly half the file size of equivalent JPEG quality. Good for phone storage, but a problem everywhere else — Windows can't open HEIC without a codec, most websites won't accept it, and Android doesn't support it. Convert to JPG first and it works everywhere.

Technically yes — JPG is lossy. In practice, for photos, you won't see the difference. For screenshots with text, sharp lines, or logos, you might notice JPEG artifacts around edges at high zoom. If your image has a transparent background, converting to JPG will fill that transparency with white. If any of that matters for your use case, stay with PNG.

They are — slowly. All major browsers have supported it since 2020. The holdback is tooling and existing workflows. If you're building or updating a website in 2025, converting your images to WEBP is one of the easier ways to improve Google PageSpeed scores. The 25–35% size reduction over JPG is real and measurable.

Use Image Compressor — move the quality slider down and watch the estimate. If compression alone won't get you there (common with high-res phone photos), use Resize first to reduce the pixel dimensions. A government portal doesn't need a 4000×3000 photo. Resize to 800×600, compress to 75%, and you'll be well under 50 KB.

No. Files are deleted automatically once your download starts. There's no gallery of uploaded images, no thumbnails cached anywhere, nothing retained. The server holds the file for the few seconds the conversion takes, then it's gone.