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Image Compressor

Shrink JPG, PNG or WebP files by up to 90% — right in your browser, privately, with no uploads, no signup and no watermarks. Drag the quality slider to balance file size against sharpness, then download the smaller image in seconds.

Choose an image

Output format

Quality 80%

What is an image compressor?

An image compressor reduces the file size of a picture while keeping it looking as close to the original as possible. It works by removing redundant pixel data and re-encoding the image with a more efficient compression algorithm. There are two approaches: lossy compression (used by JPEG and WebP) throws away some detail that the human eye barely notices, while lossless compression (PNG) shrinks the file without dropping a single pixel.

Smaller images matter more than ever. They load a website faster, keep email attachments under the size limit, let you upload to forms and marketplaces that cap file size, and help you store thousands more photos in the same cloud or phone storage. This tool compresses locally using the browser’s Canvas API, so your image never leaves your device — which also means it never hits a server or a third-party queue.

Use the quality slider to tune the trade-off: a lower value produces a much smaller file with subtle softness, while a higher value preserves more detail at a larger size. Because you can pick the output format too, you get a single place to compress, convert and optimize an image in one go.

How to use the image compressor

Click Choose an image and pick a JPG, PNG or WebP file from your device.
Select the output format — WebP is usually the smallest, then JPG, then PNG.
Drag the quality slider between 1% and 100%; the live percentage updates as you move it.
Check the original size, compressed size and total saved, then click Download.

Example

A 2.8 MB sunset photograph at 4000×3000 pixels is dropped in and set to WebP at 75%. The tool returns a roughly 180 KB file — about 94% smaller — with only a modest loss in fine detail, and a side-by-side preview confirms the image still looks sharp on screen.

Who is this image compressor for?

Content creators: They need blog and YouTube thumbnails that load instantly, so they compress at 70–85% quality to keep pages fast without losing visible detail.
Photographers: They send edited photos through email or to print portals, so a strong light JPEG or WebP keeps the quality while dropping megabytes.
Marketers: They run campaigns and job-postings that cap uploads at 10–25 MB, so a quick compression pass guarantees the file goes through.
Developers: They optimize hero and product images for Core Web Vitals, cutting LCP and bandwidth with an efficient modern format.

Image compression quality reference

Output format	Compression	Typical quality	Best for
WebP	Lossy	70–85%	Web pages, product photos, thumbnails
JPEG	Lossy	60–80%	Photographs, email, upload slots
PNG	Lossless	100% (fixed)	Logos, screenshots, text

Common use cases

Speed up a blog or ecommerce page so images load almost instantly.
Get a photo under a 25 MB or 10 MB upload limit on a job portal, form or platform.
Fit more images into email attachments or cloud storage.
Optimize product photos before publishing them to a marketplace that scores page speed.

Pro tips

Choose WebP for anything going on the web — it is almost always the smallest at the same visual quality.
For big photos, try 60–75% quality before touching 80–90%; the savings are large and the difference is often invisible.
Resize large dimensions first — a 4000px-wide image will stay big no matter how much you compress.
Compression is lossy, so always keep the original as a master copy.

FAQ

Is this image compressor free?

Yes — free and unlimited, with no signup and no watermark.

Does compressing an image reduce quality?

Lossy formats do discard some data, but at sensible quality settings the difference is usually invisible. The quality slider lets you trade size for sharpness.

Are my images uploaded anywhere?

No. Everything runs locally using the Canvas API, so your images never leave your device.

How much can I compress an image?

For photographs, WebP and JPEG often shrink the file by 60–90% with little visible loss, depending on the source.

Which format gives the smallest file?

WebP is usually smallest at the same quality, followed by JPEG, with lossless PNG the largest.

What quality should I pick?

70–85% is a great starting point for photos; use 90–100% only when you need maximum fidelity.

Can I convert the format while compressing?

Yes — choose WebP, JPG or PNG as the output format and the resulting file is saved in that type.

Why is my output larger than the original?

Lossless PNG output, a high quality setting, or very large dimensions can keep the file big. Switch to WebP and lower the quality value.

Does compressing an image change its dimensions?

No. Compression re-encodes the same pixels with a more efficient algorithm, so the width and height stay exactly the same. If you also need a smaller width or height, use a resize tool first.

What is the difference between lossy and lossless compression?

Lossy compression (used by JPG and WebP) removes some detail the eye barely notices to shrink the file a lot, while lossless compression (PNG) reduces the file size without dropping a single pixel, so a PNG stays bigger.

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