Image Resizer & Compressor
Resize and compress a photo to fit an upload limit — entirely inside your browser, with nothing uploaded anywhere.
Choose an image or drop one here
JPG, PNG, WebP, GIF or AVIF · stays on your device
Runs entirely in your browser. Nothing you type here is uploaded, stored or logged.
Common size limits you might be fighting
| Where | Typical limit | Suggested setting |
|---|---|---|
| Passport / visa applications | 240 KB – 2 MB | JPEG, 600–1200px, 70–80% |
| Job application portals | 1–2 MB | JPEG, 1200px, 80% |
| Email attachments | 10–25 MB total | JPEG, 1600px, 80% |
| Website hero image | Under 200 KB | WebP, 1920px, 75% |
| Blog body image | Under 100 KB | WebP, 1200px, 75% |
| Forum / marketplace avatar | Under 500 KB | JPEG or PNG, 512px |
| Government e-forms | Often 50–200 KB | JPEG, 800px, 60–70% |
Resize first, then compress
A 4000-pixel-wide photo displayed in a 800-pixel column is carrying five times more data than anyone will ever see. Reducing the dimensions is the single biggest saving available, and unlike quality reduction it costs you nothing visible at the size the image is actually viewed.
Only once the dimensions are right does the quality slider matter. Doing it the other way round — crushing quality on an oversized image — produces a file that is both large and visibly degraded.
Choosing a format
JPEG is built for photographs. It discards detail the eye is bad at noticing, and at 80% quality that trade is essentially invisible. It cannot do transparency.
PNG is lossless, so text stays crisp and edges stay clean. That makes it right for screenshots, diagrams and logos, and wrong for photos — a photo saved as PNG can be ten times the size of the same image as JPEG with no visible gain.
WebP is roughly 25–35% smaller than JPEG at matching quality, supports transparency, and works in every browser released in the last several years. For anything going on a website, it is the default worth reaching for. Some older desktop software and a few upload forms still reject it, which is the only reason not to.
A privacy note about photo metadata
Photos from phones carry EXIF metadata: the exact GPS coordinates where the picture was taken, the device, and the timestamp. People routinely publish their home address without realising it.
Because this tool redraws the image on a canvas, all of that metadata is discarded in the output. Orientation is applied first so the picture stays the right way up. If you only want the metadata gone, run the image through at original size and 100% quality.
Why images stay on your device
Most free image compressors upload your file, process it on a server, and hand back a link. That is fine for a holiday snap and genuinely risky for a scanned passport, a payslip or a signed contract. Browsers have been able to decode, resize and re-encode images locally for years, so there is no technical reason to upload at all. This tool doesn't.
Frequently asked questions
Are my images uploaded to a server?
No — and this is the main reason to use this tool rather than most alternatives. The file is read by your browser with the FileReader API, redrawn on a canvas, and re-encoded locally. It never touches a network. That makes it safe for passport scans, medical documents, contracts and anything else you would not want sitting on someone else's server.
Which format should I choose?
JPEG for photographs — it compresses continuous tone extremely well. PNG for screenshots, logos and anything with sharp edges or transparency. WebP for the web generally: it beats both at the same visual quality and is supported by every current browser. Avoid PNG for photos; the files are enormous for no benefit.
What quality setting should I use?
For JPEG and WebP, 80% is the usual sweet spot — most people cannot see the difference from 100% but the file is a fraction of the size. Below about 60% you start seeing blocking around edges. PNG is lossless, so the quality slider does nothing for it.
Can I make a small image bigger?
You can, but the result will be soft. Upscaling invents pixels that were never captured; no amount of browser-side processing recovers detail that is not in the file. If you need a larger version, go back to the original source if one exists.
Does resizing remove EXIF data?
Yes, as a side effect. Redrawing the image on a canvas discards all metadata, including GPS coordinates, camera model and timestamps. If you are sharing a photo publicly, that is a privacy win worth knowing about — though rotation stored in EXIF is applied before stripping, so images stay the right way up.