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Free Image Compressor & Resizer: No Upload, No Sign-up

Short answer: drop your photos in the box below and smaller files are made right away. Your images are never uploaded; everything happens in this browser.

How to use it

  1. Drag photos in or click to choose. You can add several at once, or paste a copied image with Ctrl+V.
  2. Pick the format, quality and size and the results update instantly. Defaults: same format as the original, quality 80, longest side up to 1920 px.
  3. Click “Download” on each image, or “Download all (ZIP)” for several.

Which format should I pick?

  • JPG: the safe choice for photos. It opens everywhere. Transparent areas turn white.
  • WebP: often smaller than JPG at the same quality, and keeps transparency. Great for blogs and websites, though some older programs can’t open it.
  • PNG: for text, charts and logos that need crisp edges. Saving a photo as PNG usually makes it bigger.

What Sitecurio measured

On 16 Oct 2026 Sitecurio shrank public images the same way this tool does (the browser’s built-in encoder, quality 80):

  • NASA astronaut photo, PNG 512×512, 415 KB → WebP 31 KB (92% smaller)
  • Coffee photo, JPG 600×400, 102 KB → JPG 47 KB (54% smaller)

Results vary by photo. Files that are already heavily compressed may barely shrink; if the original is smaller, the tool gives you the original.

FAQ

Are my photos uploaded anywhere?

No. Compression and resizing run in JavaScript inside your browser, and your files are never sent to a server.

What quality should I use?

For viewing on phones and screens, 75–85 usually looks the same to the eye. For print, use 90 or higher and skip resizing.

Is location data removed?

Yes. Saving again strips EXIF data such as GPS location and camera details. The photo is still saved the right way up.

Does it work with iPhone HEIC photos?

Some browsers, including Chrome, can’t open HEIC. On iPhone, set Settings > Camera > Formats to “Most Compatible”, or export the photo as JPG first.

How many images at once?

There’s no set limit, but everything runs on your own device, so dozens of large photos can be slow.

More free tools: Free tools you can use right here

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