Free Image Compressor

How do I compress images for a website without losing quality?

Short answer: We.Inc's free Image Compressor shrinks JPG, PNG, and WebP images by choosing an output format, a quality level, and an optional maximum width, then shows the before and after size for every file. Everything runs in your browser, so photos are never uploaded.

Key facts

  • The image compressor supports JPG, PNG, WebP, and GIF (first frame) as input formats.
  • A 12 megapixel phone photo has four times the pixels of a 2000 pixel wide web image, so resizing alone can cut file size by about 75 percent.
  • WebP is recommended for almost everything on a website, JPG for email attachments or older software, and PNG for lossless graphics like screenshots and logos.
  • The tool recommends aiming for under 200 KB for a hero image and under 100 KB for most other photos.
  • PNG output ignores the quality slider because PNG compression is lossless.

Summary checked against this page on September 25, 2026.

Make images smaller without making them look worse. Choose an output format, a quality and an optional maximum width, and see the before and after size for every file. Everything runs in your browser, so your photos are never uploaded.

How it works

  1. Add one or many images: JPG, PNG, WebP or GIF (first frame).
  2. Pick the output format. WebP is usually smallest; JPG is the safe choice for email attachments and older software; PNG is lossless and best for flat graphics.
  3. Set the quality and, if the image is bigger than it will ever be shown, a maximum width. Resizing often saves more than quality does.
  4. Compare the sizes, preview the result, then download each file or all of them.

What actually makes an image file large

File size comes from two things: how many pixels the image has and how much detail is stored per pixel. A 12 megapixel phone photo has four times the pixels of a 2000 pixel wide web image, so resizing alone can cut the size by 75 percent before any compression happens.

Compression then decides how much fine detail to keep. Lossy formats (JPG, WebP) throw away detail the eye is unlikely to notice; lossless formats (PNG) keep every pixel exactly and rely on repeating patterns, which is why they work well for flat logos and badly for photos.

Picking a format

Use WebP for almost everything on a website: photos, illustrations and transparent graphics. Use JPG when the file will be emailed or opened in older software. Use PNG for screenshots with lots of text, or when you need an exact, lossless copy.

If you only need format conversion with batch download, the WebP converter does the same job with fewer options.

Why it matters for your business

Slow pages lose visitors, especially on phones. Heavy images also use up storage on your host and data on your customers' plans. Compressing before you upload is a five minute habit that keeps every page quick, and it is one of the first things the free website checker looks at.

Tips

Frequently asked questions

Is the image compressor free and private?

Yes. It is free with no signup and no limits we impose. Images are processed by your own browser, so they never leave your device.

Will compressing reduce the quality?

JPG and WebP compression is lossy, so some detail is discarded. At quality 75 to 85 the difference is very hard to see for photos. The preview lets you check before you download.

Why is my PNG not getting much smaller?

PNG is lossless, so the quality slider does not apply. To shrink a PNG, reduce its width or switch the output to WebP, which keeps transparency and is usually far smaller.

Does it remove photo metadata?

Yes. Re-drawing an image through the browser canvas drops EXIF data such as camera details and GPS location. That is good for privacy, but it also means the date taken is not kept.

Is there a file size limit?

There is no fixed limit, but very large images (above about 50 megapixels) can run out of memory on phones. On a laptop, normal camera photos work fine.

Related: WebP Converter, Website Checker, Social Media Image Sizes, Open Graph Preview.

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