toolspace

Image compressor

Make JPG, PNG and WebP images smaller in your browser. Choose a format and quality, compare the sizes and the before and after, then download. Images never leave your device.

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Common mistakes

  • Compressing the same JPEG again and again

    Each lossy save loses a little more detail. Start from the original file every time.

  • Saving transparent images as JPEG

    JPEG has no transparency, so transparent areas become white here. Use WebP or PNG to keep them.

  • Shrinking bytes but not pixels

    A 6000 px photo shown 800 px wide wastes most of its size. Resize it first, then compress.

  • Judging quality at a glance

    Look at faces, text and smooth gradients up close; that is where compression shows first.

How it works

  1. 1

    Add images

    Drop one or more JPG, PNG or WebP files, or pick them. They are decoded in this tab, not uploaded.

  2. 2

    Choose format and quality

    JPEG and WebP get smaller as quality drops; around 75–80% is usually hard to tell from the original.

  3. 3

    Compare and download

    Each file shows its old size, new size and the change. If the new file is bigger, keep the original instead.

Questions

Are my images uploaded?
No. Decoding and re-encoding happen in this tab with the browser’s own image tools, and the page is blocked from sending data anywhere.
Why did my PNG barely shrink, or grow?
PNG is lossless, so saving it again keeps every pixel and the browser’s PNG encoder is not tuned for size. To make a PNG much smaller, save it as WebP or JPEG instead (JPEG has no transparency).
Which format should I pick?
WebP is usually the smallest and keeps transparency, and every current browser shows it. JPEG works everywhere and suits photos. PNG suits screenshots and flat graphics that need exact pixels.
Is the photo’s metadata kept?
No. Re-encoding through a canvas drops EXIF data such as camera details and GPS location, and ignores the EXIF rotation once it has been applied to the pixels.