Image Compressor

Shrink JPG, PNG and WebP images with a quality slider — free, in your browser.

Processed locally – files never leave your device

Drop images here or click to browse

JPG, PNG or WebP · up to 50 MB each · paste works too

Quality (lower = smaller file): 80

Next: try Compress Image to 50KB — Shrink a photo to under 50KB.

Big images slow down websites, eat mobile data and bounce off upload limits. This free image compressor shrinks your photos right in your browser: pick a quality level, watch the before and after sizes, and download the smaller file. No account, no upload, no watermark.

It works on JPG, PNG and WebP, one file or a whole batch at once. Need a specific size instead? Try Compress Image to 50KB for exact targets, or convert photos to the smaller WebP format with the JPG to WebP Converter.

How to use

Drop one or more images onto the box above, or click to browse.
Move the quality slider (10–95) — lower means a smaller file.
Check the before and after sizes and the percentage saved for each file.
Download files one by one, or all together as a ZIP.

Why use Toolsvine

Most online compressors upload your images to a server, queue them, and cap how many you can shrink per day. Toolsvine compresses on your own device, so there is no queue, no daily limit and no copy of your photos sitting on someone else's server. Batch mode handles a whole folder of images in one go, and the sizes shown are the real sizes of the files you download.

How JPEG quality works

JPEG is a lossy format: when it saves, it throws away fine detail the human eye barely notices, using a mathematical step called the discrete cosine transform. The quality number controls how much it throws away. Quality 90 keeps almost everything and shrinks a photo modestly; quality 60–75 usually cuts the file to a third of its size with little visible change; below 40, blocky artefacts start to appear around edges and text.

Quality guide

Quality	Best for
90–95	Prints and archiving — barely smaller
80–85	Website photos — the sweet spot
65–75	Social posts and blogs — much smaller, still clean
40–60	Thumbnails and previews where size matters most
10–30	Last resort — visible artefacts

The percentage saved is simple arithmetic: (original − compressed) ÷ original × 100. PNG files compress differently — PNG is lossless, so re-encoding a PNG rarely shrinks it much. If a PNG stays stubbornly large, converting it to JPG or WebP usually beats compressing it as a PNG.

Frequently asked questions

How much smaller will my image get?

It depends on the photo and the quality you pick. A typical phone photo at quality 80 ends up at roughly a third of its original size. The tool shows the exact before and after sizes for every file, so you always see the real result.

Will compression make my photo look bad?

At quality 80–85, almost never — the difference is invisible on screens. Quality below 60 can show blocky patches, especially in skies and around text. If you can see the damage, raise the slider and try again.

Does PNG compression work the same as JPG?

No. PNG is lossless, so it cannot throw away detail the way JPEG does — a PNG mostly stays the same size. For photos, convert to JPG or WebP first; keep PNG only when you need transparency or pixel-perfect graphics.

Can I compress several images at once?

Yes. Drop in a whole batch and each file is compressed with the same quality setting. Use Download all (ZIP) to get every compressed file in one download.

Are my images uploaded anywhere?

No. Compression runs entirely in your browser using the canvas. Your images never leave your device.