Image Compressor & WebP/AVIF Converter (Free Tool)

Drop your images here

or browse to upload · JPG, PNG, WebP · add as many as you like · nothing leaves your browser

Quality 0.80

Smaller file (0.40)Best quality (0.95)

Higher quality means a larger file. 0.80 is a strong balance for most web images.

Output format

WebP gives small files with wide browser support. AVIF is smaller still but slower to encode. JPEG is the most compatible for photos. Keep PNG re-encodes losslessly (the quality slider does not apply).

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0Original total

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Set your quality and format above, then hit Compress. Each image shows its before and after size with its own download button.

Heavy images are quietly costing you calls.

Compressing your photos is step one. We rebuild slow sites so every page loads fast, ranks better, and turns more visitors into customers. Get a free mockup or audit.

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Smaller image files, faster site, same sharp photos

Big image files are the number one reason websites load slowly, and a slow page costs you rankings and customers before they ever read a word. This tool batch-compresses your images and converts them to modern formats like WebP and AVIF, so each file gets dramatically smaller while still looking sharp. Everything happens right here in your browser, so nothing is ever uploaded.

How it works

Drop in one image or a whole batch, set a quality level, and pick an output format. The tool draws each image onto a canvas at its full natural size, then re-encodes it with canvas.toBlob at the quality you chose. WebP and AVIF are next-gen formats that pack the same picture into far fewer bytes than an old JPEG or PNG. You see the original size, the new size, and the percent saved for every file, then download them one at a time or all at once in a ZIP. Your images never leave your device.

Why image size matters for getting found

Page speed is a real ranking factor, and Google measures it through Core Web Vitals like Largest Contentful Paint, which is almost always a hero image. Oversized photos also burn through mobile data and make visitors bounce before the page even paints. Serving lean, next-gen images is one of the highest-impact things a local business can do for both search rankings and conversions, and it costs nothing but a few minutes here.

How this compares to TinyPNG and Squoosh

TinyPNG is a solid tool, but the free version caps you at 20 images and 5MB each, it uploads your files to its servers, and you pay around 39 dollars a year to do more. Squoosh from Google is excellent for fine-tuning, but it works on a single image at a time. This tool is unlimited and free, compresses a whole batch in one pass, exports both WebP and AVIF, and keeps every file 100% private in your browser with a one-click ZIP download. There is no account and no queue.

Pro tips

Start from the largest original you have. You can always compress down, but you cannot add detail back.
WebP is the safest choice for the web today. Use AVIF when you want the very smallest files and your audience is on current browsers.
Leave quality at 0.80 to start. Most photos compress beautifully there, and you rarely need to go above 0.85.
For logos, icons, or graphics with sharp edges and text, keep the original PNG so lines stay crisp.
Compress your hero and gallery images before uploading them to your site, then watch your page-speed score climb.

Frequently asked questions

Does this image compressor upload my files anywhere?

No. Everything runs in your browser using the HTML canvas. Your images never leave your device and nothing is sent to a server, so it works even with sensitive files. There is no upload, no queue, and no limit on how many images you can process.

What is the difference between WebP, AVIF, and JPEG?

WebP and AVIF are next-gen formats that produce much smaller files than JPEG at the same visual quality, and both are widely supported by modern browsers. AVIF usually compresses the smallest but is slower to encode. JPEG is the most universally compatible for photos. WebP is the safest all-around choice for the web today.

What does the quality slider do?

The quality slider controls how aggressively each image is compressed, from 0.4 for the smallest files to 0.95 for near-original quality. The default of 0.8 is a strong balance of small file size and sharp detail for most web images. Lower the slider to save more bytes, raise it if you start to see artifacts.

How is this different from TinyPNG or Squoosh?

TinyPNG is free for up to 20 images and 5MB each, uploads your files to its servers, and charges about 39 dollars a year for more. Squoosh is excellent but works on one image at a time. This tool is unlimited and free, processes a whole batch at once, exports WebP and AVIF, and keeps everything 100% private in your browser with a one-click ZIP download.

What if my browser does not support AVIF?

If your browser cannot encode the format you picked, the tool detects it, falls back to a supported format like WebP or JPEG so you still get a compressed file, and tells you which images were converted instead. Most current versions of Chrome, Edge, Firefox, and Safari support WebP, and AVIF support is now common.

Compress images, keep them sharp.