Image Compressor Online
Make your images smaller without visible quality loss — right in your browser, free and without the cloud.
Click or drop images hereTap here to choose images
Target size (PRO)
Tell the converter how big you want the file (e.g. “under 100 KB”) — it keeps tuning the quality until you hit it.
Format optimization
WebP and AVIF automatically produce files 30–70% smaller at the same visual quality than JPG.
No cloud
Compression runs 100% in your browser — no uploads, no data processing.
Free, no watermark
No account and no visible marks on the output. The PRO target-size feature needs a subscription; everything else is free.
Frequently asked questions
What's a good file size for a web image?
60–150 KB for a content photo, 150–300 KB for a hero image (with WebP/AVIF), 20–50 KB for thumbnails. Aim to keep the whole page around 500–800 KB.
Which quality level should I pick for JPG?
Q75–85 is ideal in most cases: visually almost indistinguishable from Q95, with a file half to a third of the size.
WebP or AVIF — which compresses better?
AVIF usually produces smaller files, but encodes more slowly. The practical recipe: AVIF + WebP + JPG fallback with the <picture> element — our format comparison article covers this in detail.
Why doesn't the file shrink when I compress a PNG?
PNG is lossless, so its limits are tighter. If it's a photo, convert it to WebP or JPG — it immediately gets much smaller at the same visual quality.
Learn more: AVIF vs. WebP in 2026 · reduce file size without quality loss · all conversions