Images
Compress images online free and convert JPG to WebP
Drop up to a hundred images, pick a format and a quality, download a .zip. JPG, PNG, HEIC and TIFF in; WebP, AVIF or JPG out.
The engine runs on WebAssembly inside your browser: no photo ever travels to a server, not even for a second.
Why it matters that photos are not uploaded
Image-compression websites send your files to a server, process them there and hand back a link. For a landscape snap, who cares; for photos of your kids, an unreleased product catalogue or a client's shoot, you should. There is no upload here: the browser reads the image off disk, re-encodes it on your own machine and drops it in your downloads folder. It is also faster, because a hundred photos do not have to cross your connection twice.
How it works, in 3 steps
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Drop your images
Up to a hundred at once, as JPG, PNG, iPhone HEIC or TIFF. You can paste with Ctrl+V too. They open in your browser and go nowhere else.
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Pick a format and quality
WebP, AVIF or JPG, with the quality slider and, if you want, a maximum width to scale them down. You can rename the whole batch with a numbered pattern.
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Check it, then download
You see how much you saved in total and file by file, and you can drag across the image to compare before and after. Happy with it? Grab the .zip.
What people use it for
- Uploading photos to an online shopTurning fifty product shots into 1600 px WebP files, renamed product-001 onwards, ready to import.
- Speeding up a slow WordPressRe-compressing the media library before re-uploading it — the number-one cause of a site that crawls.
- Preparing images for emailGetting the newsletter under the provider's size limit so it doesn't get clipped or filed as promotional bulk.
- iPhone HEIC photosConverting the camera roll to JPG so any Windows program, CMS or bank upload form will actually accept it.
- Scans and archival TIFFsConverting the hundreds-of-megabytes TIFFs a professional scanner produces into something shareable.
- Before building a PDFSlimming the photos first, then assembling them in the PDF toolbox so the document doesn't come out bloated.
Convert JPG to WebP: why it is worth doing
WebP is the format Google pushed for exactly this job, and by now every browser anyone actually uses understands it. At equivalent quality a WebP weighs 25 to 35 % less than the same JPG, and unlike JPG it supports transparency, so it replaces a lot of PNGs too. If you are optimising a website and can only make one change, converting images to WebP is the one visitors notice.
The conversion here is direct: drop the JPGs, choose WebP, set the quality, download. No account, no daily cap, no watermark. And because nothing is uploaded, total time depends on your processor rather than your connection: fifty photos take the same on fibre as on a phone hotspot.
Compress images online free, without visible quality loss
“Without quality loss” is, honestly, impossible with these formats — WebP, AVIF and JPG all shrink by discarding information. What you can do is lose quality the eye cannot see, and that is the whole craft. Rule of thumb: quality 80 is where almost nobody spots a difference and the file is already less than half the size. Below 60, banding creeps into skies and halos appear around text.
Which is why this tool does not ask you to take its word for it. The comparison slider drags a line across the image itself: original on the left, result on the right, same place, same size. If you cannot see the difference at quality 70, take the savings; if you can, push the slider up and run it again. And the number that actually matters sits at the top: how much you saved in total.
Maximum width usually saves more than quality does. A phone photo comes out around 4000 pixels wide, and a product page rarely needs more than 1600. Capping the width cuts the weight to a fraction before compression even enters the picture. The tool only ever scales down: an image that is already narrower is left alone rather than being blown up and ruined.
HEIC to JPG converter, for iPhone photos
Since 2017 the iPhone has stored photos as HEIC, which is about half the size of a JPG at the same quality. Excellent on the phone, a nuisance everywhere else: plenty of content systems, government upload forms and Windows programs still refuse to open it. Hence how heavily “HEIC to JPG converter” gets searched.
The HEIC to JPG mode does that one job: drop the photos, get JPGs. The HEIC decoder is around 3 MB and downloads the first time you need it — never on page load — then stays cached. Like everything else here it works without uploading anything, which is rather the point when what you are converting is your camera roll.
AVIF: how much it saves and who supports it
AVIF is the most efficient of the three: it can land at half the size of a comparable JPG and holds up better at low quality settings. There are two catches. First, encoding is slow — a big batch takes noticeably longer than WebP. Second, support. Every current browser can display AVIF, but only modern Chrome and Edge can create it from a web page; Firefox and Safari cannot yet. If your browser can't, the option shows up disabled with a note — we would rather tell you than hand over a file that is really a renamed PNG.
The limits, stated before they bite
A hundred images per batch, with your device's memory as the real ceiling: large HEIC and TIFF files are heavy, so above 50 MB per file work in small groups, especially on a phone. For multi-page TIFFs, the first page is converted. Re-encoding drops EXIF data, GPS and the colour profile — usually a good thing for the web, but keep the original if you need them. And if an image was already so well optimised that the result would be bigger, the original is kept and you are told, rather than being handed something worse.
Frequently asked questions
Which format should I pick: WebP, AVIF or JPG?
WebP is the right answer almost every time: 25 to 35 % lighter than an equivalent JPG, supported by every browser anyone uses since 2020.
AVIF compresses harder still — down to half a JPG — but is slower to produce and some older desktop software won't open it. JPG is the safe choice when the file has to open anywhere without questions.
Which browsers support AVIF?
For viewing AVIF, recent Chrome, Edge, Firefox, Safari and Opera all work. For creating it, which is what this tool does, you need a modern Chrome or Edge — Firefox and Safari still cannot encode AVIF from a web page.
If your browser can't, you'll see the option disabled with a note explaining why. We will never hand you a file that claims to be AVIF and isn't.
How do I convert iPhone HEIC photos to JPG?
Click “HEIC to JPG”, drop the photos and download. The decoder downloads the first time (about 3 MB) and stays cached afterwards. The photos never leave your device.
Does compression lose quality?
Yes — all three formats shrink files by discarding information. The question is whether that loss is visible, which is what the drag-across comparison slider is for.
At quality 80 the difference is usually invisible. Below 60, banding appears in skies and halos around text.
How many images can I compress at once?
Up to a hundred. Your device's memory sets the real limit: with HEIC or TIFF files over 50 MB, work in smaller groups — especially on a phone.
Is EXIF data and location kept?
No. Re-encoding produces a clean file with no EXIF, no GPS and no colour profile. Usually an advantage for web publishing; if you need that data, keep the original too.
Can I rename images in bulk?
Yes. Turn on bulk renaming and write a pattern with {n} where the number goes: product-{n} gives product-001, product-002… starting from whatever number you choose.
Does it work with TIFF?
Yes, TIFFs are read and converted to whichever format you pick. For multi-page TIFFs, the first page is converted.