Image Compressor
Modern web standard — small files with transparency.
Compression runs entirely in your browser — your image never leaves your device.
Image Compressor
Make images smaller without sending them anywhere. Drop in a photo, pick an output format and quality — or set an exact size budget — and see the before/after file size before you download. JPEG, PNG, WebP and AVIF output — with AVIF and WebP typically cutting file sizes by half or more at visually identical quality.
Compression Without Uploads
Traditional compressor sites upload your images to a server, compress them in a queue, and hand them back — your files sit on someone else's disk in the meantime. Here the browser does the work: decode, re-encode and download all happen on your machine. Nothing is transmitted, stored or logged.
How Much Can You Shrink?
It depends on what you start with. Phone photos and camera JPEGs typically shrink 30-70% at quality 80 with no visible change. PNG screenshots and graphics convert dramatically to WebP or AVIF — often 80-90% smaller. Already-compressed images may barely shrink; the size comparison tells you immediately.
Choose Your Trade-off
The quality slider controls the lossy compression level — lower means smaller files with more visible artifacts. JPEG suits photos, PNG keeps lossless pixels and transparency, WebP is the modern default for the web, and AVIF gives the smallest files at the same visual quality.
Prefer a hard limit instead of a dial? Switch to Target size mode, enter a budget like 100 KB, and the compressor finds the best quality that fits — automatically stepping down the resolution when nothing fits at full size. Ideal for marketplace uploads, email attachments and form limits.
Popular conversions & presets
Frequently Asked Questions
Are my images uploaded to a server?
No. Compression runs entirely inside your browser tab — there is no upload step, no queue and no server-side storage.
Which output format compresses the most?
AVIF usually produces the smallest files at the same visual quality, with WebP a close second. For maximum compatibility instead of maximum savings, JPEG remains the universal choice.
Will compression reduce my image quality?
Lossy formats (JPEG, WebP, AVIF) trade a little fidelity for a lot of size — at quality 80 and above the difference is usually invisible. PNG output is lossless: the pixels stay identical, only the file may change size.
Why didn't my image get smaller?
Already-compressed files (a heavily optimized JPEG, for example) have little fat to trim, and re-encoding can even add bytes. The result panel shows the change — try a lower quality level or the WebP/AVIF formats for a bigger reduction.
Can I compress multiple images at once?
One at a time for now — drop an image, compress, download, then replace it with the next. The workflow is deliberately simple so every conversion finishes in a second or two.