Compress Image Without Losing Quality
Set to a gentle level rather than an aggressive one: a meaningfully smaller file with no difference you can see at normal viewing size.
Drop an image for gentle, high-quality compression
JPG, PNG or WebP, up to 25 MB. Compressed in your browser, never uploaded.
Smaller file,
same picture
Every other page here starts with a number you were given. This one starts with a worry: that compressing will ruin the image. The tool opens on a light setting instead of an aggressive one, which is the honest answer to that worry.
Other sizes and settings
Same compressor, different target. Each one opens with its number already set.
Tools that pair well with this one
All free, all in your browser, no signup.
How to compress an image without losing quality
Three steps, all of them in this browser tab. Nothing is uploaded to a server, so the file you end up with never leaves your device.
Add your image
Drag a JPG, PNG or WebP onto the drop area above, or click to pick one. Files up to 25 MB are fine.
Check the quality level
The tool opens on a gentle setting that keeps the picture looking untouched. Push it harder only if you need to.
Compress and download
Press Compress, compare the two versions side by side, and download the one you are happy with.
The short answer
Can you really compress an image without losing quality?
Yes and no, and the distinction is the single most useful thing on this page, because most tools blur it deliberately.
Truly lossless compression means the file gets smaller and the pixels come back bit for bit identical. This is real and this tool does it for PNG: when an image uses fewer distinct colours than its palette allows, the file can be rewritten smaller with nothing whatsoever discarded. Logos, screenshots, diagrams and flat illustrations often shrink substantially this way with a mathematically identical result.
Visually lossless is the other thing, and it is what people usually mean. The pixels do change, but the changes sit below what your eye picks up at normal viewing size. For photographs in JPG or WebP this is what is achievable, and at a gentle setting it is genuinely convincing.
What is not achievable is a photograph reduced to a tenth of its size with no change to a single pixel. Any tool promising that is either doing visually lossless compression and calling it lossless, or not shrinking the file much. Being clear about which one you are getting is the point of this page.
Getting it right
How to get the smallest file that still looks untouched
A practical sequence, in order of how much it gains you.
Start with dimensions, because resizing is genuinely free quality. An image displayed at 1000 pixels wide but stored at 4000 loses nothing visible when resized down, and the file shrinks by roughly three quarters before compression is involved at all. This is the largest lossless-feeling win available and it is not compression.
Then use a gentle compression level, which is what this page opens on. It removes the fine colour detail your eye is worst at noticing and leaves everything else, typically halving a photograph with no visible change. Push harder only if you have a size you must hit.
Finally, match the format. A screenshot kept as PNG stays perfectly sharp while its palette shrinks. That same screenshot saved as JPG at any setting picks up fuzzy edges around the text. Choosing the right format is often the difference between lossless and merely close.
Formats
Which formats can be compressed losslessly?
Only one of the three, and only under a condition worth knowing about.
| Format | What happens | Truly lossless? |
|---|---|---|
| PNG | The colour count is reduced and the file is rewritten | Yes, when the image uses few enough colours |
| JPG | Encoded again at a gentler quality setting | No, but the change is invisible at a light setting |
| WebP | Encoded again at a gentler quality setting | No, same trade as JPG |
This is why a screenshot and a photograph get such different treatment. A screenshot has few colours and hard edges, so PNG can shrink it with nothing lost. A photograph has millions of colours and soft gradients, so a lossless route barely helps and the gentle lossy route is the honest one.
What gentle compression gives you
Everything below happens on your own device, in the time it takes to read this line.
Keeps the picture intact
Opens on a light setting that halves most photographs with no change you can see at normal viewing size.
Your format, kept
A PNG comes back a PNG, a JPG comes back a JPG. We never convert your file to get a better number.
Nothing leaves your device
The work runs in your browser. No upload, no queue, no copy of your image on anyone's server.
See the saving before you keep it
Original and result side by side, with both exact sizes and the percentage saved, before you download anything.
Works on a phone
The whole tool runs in a mobile browser, which matters when the photo you need to shrink is already on your phone.
Free, with no account
No signup, no watermark and no daily cap. Compress as many files as you need.
Compressing without quality loss: common questions
What people ask before trusting a compressor with an image they care about.
PNG, when the image uses a limited range of colours. Screenshots, logos, diagrams and flat illustrations are the ideal case, and reducing the palette can cut the file substantially with a pixel-for-pixel identical result.
JPG and WebP photographs cannot be made meaningfully smaller without discarding something, because they are lossy formats by design. Gentle compression on those is visually lossless rather than mathematically lossless, which is an honest and useful thing but a different thing.
For a typical photograph straight from a camera, roughly half, with no visible change at normal viewing size. Camera files are encoded conservatively, so the first big reduction costs almost nothing.
Past that it depends entirely on the image. Portraits and plain backgrounds keep going for a long time. Fine repeating texture like foliage or fabric starts showing changes much sooner.
Never. A PNG comes back a PNG, a JPG comes back a JPG. Converting a PNG to JPEG would produce better numbers and is exactly what many tools quietly do, but it also discards any transparency and replaces it with a background you did not choose.
If you do want a different format, that is a conversion rather than a compression, and our image converter handles it as a deliberate step you can see.
No. The compression runs inside your browser, using the canvas your browser already ships with. Your file is read from your own device, processed in memory, and handed straight back to you.
Nothing is transmitted, which means nothing can be stored, logged or leaked. It also means the tool keeps working if your connection drops halfway through.
Free, with no watermark, no account and no daily limit. Compressing without visible quality loss costs you nothing and produces a clean file.
There is nothing to sign up for because there is no server doing the work. The tool is the page you are already on.
JPG (and JPEG, which is the same format), PNG and WebP, at up to 25 MB per file. Your file comes back in the format you gave it.
HEIC from an iPhone, AVIF and GIF are not supported yet. If your photo is a HEIC, exporting it as a JPG first will let you compress it here.
Smaller, with nothing you can see given up
Drop an image in and compare the two versions before you decide.