Image Compressor
Compress JPEG, PNG and WebP images to a smaller size in your browser.
How to use the Image Compressor
- 01
Choose an image from your device.
- 02
Set the quality and an optional maximum width or height.
- 03
Compress, then download the smaller image.
What it does
Smaller image files load faster, use less bandwidth and storage, and slip under the upload limits that email, forms and content systems impose. This compressor shrinks JPEG, PNG and WebP images while letting you decide how much quality to trade for size.
How it works in your browser
You set a quality level and, optionally, a maximum width or height. The tool re-encodes the image at that quality and resizes it if needed, then shows the before and after file sizes so you can see exactly how much you saved.
There are two ways it reduces size, and they stack. Re-encoding at a lower quality discards detail the eye barely notices (this is lossy, as used by JPEG and WebP), while resizing removes pixels outright. For a photo headed to the web, dropping to around 70 to 80 percent quality is often visually indistinguishable from the original.
Choosing a format
Format matters. WebP typically produces noticeably smaller files than JPEG at the same visible quality, JPEG is the safe universal choice for photographs, and PNG is best for graphics, screenshots and anything needing sharp edges or transparency, though it compresses photos less efficiently.
What compresses best
Photographs shrink the most because their smooth gradients tolerate compression well; flat graphics and text are already small and gain less. If a result looks soft, nudge the quality back up; the savings curve flattens quickly past a certain point.
Private by design
Crucially, the whole process runs in your browser. Your images are never uploaded, which makes this safe for private photos, ID scans or anything confidential, and means there is no waiting on a server.
Frequently asked questions
Is my image uploaded to a server?
No. Compression runs entirely in your browser, so your image never leaves your device, which is ideal for private photos.
How does the compression work?
It re-encodes the image at a lower quality and, optionally, resizes it so the longest side fits the limit you set. Both reduce file size, and they can be combined.
Which formats are supported?
Common web image formats such as JPEG, PNG and WebP. Photographs usually shrink the most, since they compress well at slightly lower quality.
What is the difference between lossy and lossless compression?
Lossy compression (JPEG, WebP) discards some detail to save more space, which is fine for photos. Lossless keeps every pixel but saves less. Resizing reduces size either way by removing pixels.
What quality setting should I use?
For web photos, around 70 to 80 percent is usually indistinguishable from the original while cutting the file size significantly. Raise it if you notice softness, lower it if you need a smaller file.
Will compressing reduce quality?
Lossy compression removes some detail, but at sensible settings the difference is hard to see. You control the trade-off, and the before and after preview lets you judge it.
Learn more
How to Compress Images Without Losing Quality
What image compression really trades away, where the quality sweet spot is, and the steps that shrink a file without a visible drop.
Image Formats for the Web: JPEG, PNG, WebP, and AVIF
What sets JPEG, PNG, WebP, and AVIF apart, how much smaller the modern formats are, and a simple rule for which one to use.
HEIC to JPG: Why iPhone Photos Won't Open, and How to Convert Them
Why iPhone HEIC photos won't open on Windows or the web, how to convert them to JPG, and how to make your iPhone shoot JPG instead.
Resizing Images for the Web: Dimensions, Retina, and the DPI Myth
Why only pixel dimensions matter on screen, why 300 DPI for web is a myth, and how to size images for high-density displays.
SVG vs PNG: When to Use Vector or Raster
SVG is vector and scales forever; PNG is raster and fixed. Learn which fits logos, icons, photos, and screenshots, and when to convert.