A 4000 × 3000 phone photo for a website
Scaled to 1920 px wide it becomes 1920 × 1440 — about 77% fewer pixels before quality is even changed.
Image Compressor
Make JPG, PNG and WebP images smaller for the web or email, without uploading them.
Drag an image here, or choose one
JPG, PNG, WebP or GIF. It stays on your device — nothing is uploaded.
Runs in your browser — nothing you enter is sent to a server.
How the Image Compressor works
Choose an image, pick a format, quality and maximum width, and select Compress image. The image is re-encoded on a canvas in your browser — it never leaves your device — and you see the new size and how much was saved before you download it.
The biggest savings usually come from the size, not the quality: a 4000-pixel phone photo shown 1200 pixels wide on a web page carries eleven times the pixels it needs. WebP is typically 25–35% smaller than JPG at similar quality. Compressing also removes metadata such as the camera model and GPS location.
Formula
saved = (1 − new size ÷ original size) × 100%
Pixels scale with the square of the width: half the width is a quarter of the pixels.
Examples
Choosing a quality
75–85% is visually close to the original for photos; below 60% artifacts start to show around edges and text.
Frequently asked questions
Are my photos uploaded?
No. Compression runs entirely in your browser; the file never leaves your device.
Why did my PNG get bigger?
PNG is lossless. Screenshots and graphics with flat colors are often already small as PNG; converting them to JPG can add size. Use the Image Format Converter to compare, or keep the PNG.
Can every browser save WebP?
All current browsers can. Very old Safari versions (before 17) can't, and the tool will tell you to choose JPG.
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