Image Compressor

Make an image file smaller

The Image Compressor re-saves a picture as JPEG or WebP at a quality level you choose, so the file takes up less space. The width and height stay exactly the same — only the amount of data used to store the picture changes.

Original and compressed versions appear side by side with their file sizes, so you can judge the trade-off before downloading. Your browser does the work on your device; the photo is never sent to a server.

How to compress a photo

1. Click the upload box or drag an image onto it. PNG, JPG and WebP all work.
2. Pick an output format: JPEG or WebP.
3. Move the Quality slider (it starts at 80%). The compressed preview and its size update as you drag.
4. Check the line under the previews to see how much smaller the new file is.
5. Click Download compressed image, or Choose another image to start over.

What the before-and-after sizes mean

• Two previews: Original and Compressed, each with its file size in KB or MB.
• Percentage saved: for example “62% smaller than the original”.
• “Not smaller at this quality” means the re-saved file came out the same size or bigger — common with images that were already heavily compressed. Lower the quality or try the other format.
• File name: beach.png becomes beach-compressed.jpg or beach-compressed.webp.
• No metadata: the new file is re-drawn from the pixels, so camera details and location data (EXIF) from the original aren’t copied.

Good reasons to shrink an image

• Upload limits: get a photo under the size cap of a job portal, forum or online form.
• Web pages: lighter images make blog posts and product pages load sooner.
• Email and chat: send several phone photos without hitting attachment limits.

Getting a small file that still looks right

• If the photo is far larger than it will ever be displayed, reduce its dimensions first with the Image Resizer — fewer pixels saves more than any quality setting.
• Before downloading, look closely at faces, text and edges in the Compressed preview — blocky or smudged edges mean the quality is too low.
• For logos or cut-outs with a transparent background, choose WebP. JPEG has no transparency.
• There’s a longer walkthrough of the process in how to compress images without losing quality.

Quality and formats explained

What the quality percentage controls

JPEG and WebP are lossy formats: they throw away fine detail the eye is unlikely to notice. The quality setting decides how much is discarded. Higher values keep more detail and produce bigger files; lower values shrink the file further but eventually show visible blocks and blurring. Each re-save in these formats loses a little more, so keep your original if you might need it again.

JPEG or WebP?

WebP usually gives a smaller file at similar visual quality and can keep transparency. JPEG opens in practically any program or upload form, whereas some older software still rejects WebP — so if you’re unsure where the file is going, JPEG is the safer choice.

Image Compressor: common questions