Shrink your image
Drop in a JPEG, PNG or WebP and make it web-ready in seconds — pick a format, drag the quality slider, optionally resize. Your image never leaves your browser.
Drag & drop your image here
or
JPEG, PNG or WebP · up to 25 MB
Around 80% looks identical to the original on screen but is dramatically smaller. Drop to 60–70% for thumbnails.
⚠️ JPEG cannot keep transparency — any see-through areas of your PNG will become white.
Your results
⚠️ The "compressed" file is actually bigger than the original — this happens with already-optimised images. Try converting to WebP or lowering the quality.
Sent!
Check your inbox — your compressed image is on its way. (Don't see it? Check spam, or email us.)
Everything above runs entirely in your browser — your images never leave your device unless you ask us to email you the result.
Your images are slowing your website down.
Most small business websites are not slow because of anything complicated. They’re slow because of images: a 4 MB photo straight off a phone sitting on a homepage, a PNG screenshot where a JPEG would do, five “quick uploads” that were never touched. Every one of them has to download before your visitor sees the page properly — and on mobile data, that wait costs you customers.
The fix is compression, and it’s simpler than it sounds. You don’t need Photoshop or a developer. You need smaller files that still look the same — and that’s exactly what this tool makes.
What “compressing” actually means
There are three levers, and our tool gives you all three:
- Quality. JPEG and WebP images can be re-encoded at lower quality settings. Around 80% looks identical to the original on a screen but is dramatically smaller. You drag one slider; the tool does the rest.
- Resize. A phone photo is often 4000 pixels wide; your website probably shows it at 800–1600. Shrinking the dimensions is the single biggest saving you can make — pick a preset and it’s done in one click.
- Format. JPEG is smallest for photos, PNG is lossless (so it stays bigger — fine for logos), and WebP is the modern sweet spot: sharp and tiny. The tool tells you honestly which choice saves what, including the traps — like PNG output barely shrinking at all.
Made for real websites, not just smaller numbers
The tool shows you the truth, not a vanity number: your original size next to your compressed size, the exact percentage saved, and a plain-English verdict. If the “compressed” file somehow comes out bigger than the original (it happens with already-optimised images), it tells you — and suggests what to try instead. Before and after previews sit side by side so your eyes confirm what the numbers claim.
Private by design
Here’s the part other free compressors skip: your images never leave your device. The compression happens with your own browser’s built-in tools — nothing is uploaded to our servers, nothing is stored, nothing is seen by anyone. The only thing that ever travels anywhere is the finished file, and only if you ask us to email it to you.
Why a free compressor?
We build websites for UK small businesses, and heavy images are the number-one speed problem we find — on homepages, product pages and blogs alike. This tool exists so you can fix it yourself in thirty seconds. And if you’d rather we handled your whole website’s speed, that’s what we do every day.
Frequently asked questions
Is the Image Compressor really free?
Yes. Every compression, every format and every download is free, with no account needed. If you ask us to email you the compressed image, we just need your name and email — you’ll get your file plus one follow-up email from us. No spam, ever.
Will compressing hurt my image quality?
Barely, if you do it right. Around 80% quality looks identical to the original on screens while being dramatically smaller — the tool defaults there. Drop lower and you’ll start to see softness; the before/after preview lets you check with your own eyes before downloading.
Which formats can I compress?
JPEG, PNG and WebP — the three formats websites actually use. Other image types (like GIF or BMP) aren’t supported; convert them to one of the three first.
Is there a size limit?
You can compress images up to 25 MB — comfortably more than any sensible web image. If your file is bigger than that, resize it once in any photo app first, then bring it here.
Are my images uploaded to your servers?
No. The compression runs entirely inside your browser on your own device. We never see, store or process your images — the only exception is the finished file, which travels by email only if you ask for it.
What size should my website images be?
Match the size they’ll actually display at. Blog images: 1024 px wide is plenty. Hero banners: 1600 px. Thumbnails: 640 px. Anything bigger is just weight your visitors download for nothing. The tool’s resize presets are labelled with exactly these uses.