Compress Image
Cut JPG, PNG and WebP file size with a quality slider. Free, private and done entirely in your browser — nothing is uploaded.
or drag and drop files here
Compress JPG, PNG and WebP images
- Drop one or many images.
- Set the quality slider — 70–80% is the sweet spot where the size drops a lot and the picture still looks the same.
- Optionally limit the maximum dimension (photos straight from a phone are often 4000px wide; 1920px is plenty for the web).
- Click Compress images and download individually or as a ZIP.
PNG files
PNG is lossless, so the quality slider has no effect while “Keep original” is selected. Switch the output to WebP or JPG to shrink a PNG photo dramatically. Keep PNG for logos, screenshots and images that need transparency.
What does a compress image tool do?
A compress image tool makes a picture’s file size smaller, in kilobytes or megabytes, while keeping it looking as close to the original as possible. This one does it by re-encoding your photo at a quality level you choose and, if you want, by reducing its pixel dimensions at the same time.
Two things decide how big an image file is: how many pixels it has, and how efficiently those pixels are stored. The Quality slider (10–100%) controls the second, the Max width/height box controls the first, and the Output format menu lets you switch to JPG or WebP, which store photos far more compactly than PNG. All of it runs inside your browser, so the photo never leaves your device.
Worked example: shrinking a phone photo for an online form
Say you have a 4000 × 3000 pixel photo from a 12-megapixel phone camera, and an application form that only accepts files under 1 MB. Phone photos at this size are commonly several megabytes.
- Drop the photo in and leave the quality at the default 75%.
- Type 1920 in Max width/height. The longest side becomes 1920 px and the other side scales in proportion: 3000 × 1920 ÷ 4000 = 1440, so the result is 1920 × 1440.
- Keep the output as JPG (or pick WebP for an even smaller file) and click Compress images.
The new image has 2,764,800 pixels instead of 12,000,000, about 23% of the original, and each pixel is stored more compactly at 75% quality. The tool shows the before and after size. A photo like this usually ends up well under 1 MB, although the exact figure depends on how much fine detail is in the scene. If it is still too large, lower the slider to 60–65% or set a smaller maximum such as 1280 px, starting again from the original file.
Compression settings and what to expect
| Setting | Good for | Typical result (approximate) |
|---|---|---|
| Quality 90–100% | Printing, archiving, images you will edit again | Small saving; some files barely shrink |
| Quality 70–80% | Websites, blogs, email, social media | Large saving with no visible change at normal viewing size |
| Quality 50–65% | Upload forms with strict size limits, thumbnails | Much smaller; slight softening of fine detail and text |
| Quality below 40% | Tiny previews only | Visible blocky patches and color banding |
| Max width/height 1920 px | Full-screen web images | Big saving on camera photos, still sharp on most screens |
| Max width/height 1080–1280 px | Social posts, chat apps, blog images | Smaller again; plenty for phone screens |
| Output WebP | Websites | Usually smaller than a JPG of similar visual quality |
These are general patterns, not guarantees: a detailed photo of leaves or gravel compresses less than a plain sky or a studio shot. If you keep the original format and size and the compressed version would come out larger than the file you started with, the tool simply returns your original instead.
Tips and common mistakes
- Compress once, from the original. Re-compressing an already compressed JPG adds new artifacts every time.
- Resize before lowering quality. Cutting a 4000 px photo down to 1920 px usually saves more than any slider setting, with less visible loss.
- Don’t turn logos or screenshots into JPG. Sharp edges and small text go fuzzy. Keep them as PNG, or try WebP.
- Watch transparency. JPG can’t store transparent areas, so they become white. Choose WebP if you need to keep them. WebP output needs a browser that can create WebP files, such as Chrome, Edge or Firefox; Safari may save a PNG instead.
- Check the result at 100% zoom before sending, especially scans of documents with small print.
- Work in batches. Select many images at once; several files download together as one ZIP.
More questions
How do I compress an image to under 100 KB or 200 KB?
There is no target-size box, so work in steps. Set Max width/height to around 1000–1200 px, choose JPG or WebP, start at 70% quality and look at the size shown after compressing. If it is still over the limit, lower the quality or the maximum dimension and run it again from the original. Small ID-style photos a few hundred pixels wide usually get under these limits easily.
Does compressing an image reduce its quality?
Technically yes, because JPG and WebP compression is lossy. At 70–80% the difference is normally invisible at everyday viewing sizes. Reducing dimensions also removes pixels for good, so always keep your original file in case you need a larger copy later.
Is it safe to compress private photos with this tool?
Yes. The image is processed locally by your browser and is not uploaded to a server, which makes it suitable for ID scans, documents and family photos.
Does compression remove EXIF data such as GPS location?
Because the picture is redrawn and re-encoded, the compressed copy does not carry over the original’s EXIF metadata, such as camera model or location. The one exception is when the tool hands back your original file because it could not make it smaller; that file keeps its metadata.
Need an exact pixel size rather than a smaller file? Use Resize Image. To switch formats without resizing, try Convert Image, and to turn photos or scans into a single document, use JPG to PDF.
Further reading: WebP image format (Google for Developers).