Compress Image Online — Smaller Files, Same Pixels
Shrink any photo to a fraction of its size with a quality slider and live size preview — free, instant and watermark-free, right inside your browser.
Drop your image here
or click to browse — you can also paste with Ctrl+V
Transparent areas will be filled with white (JPEG has no transparency) — switch to WebP to keep them.
🔒 Processed entirely in your browser — your image is never uploaded. Downloads also strip GPS and other metadata.
How to compress an image
- Drop your photo into the box above, click to browse, or paste it with Ctrl+V.
- Pick JPEG or WebP, then drag the quality slider — the size readout updates live so you can see exactly how many kilobytes you are saving.
- Press Download Image to save the compressed file at full resolution — no watermark, no signup.
A compressor that shows the result before you save
Most online compressors make you download a mystery file and hope for the best. Here, every move of the quality slider re-encodes your picture and reports the exact output size next to the original, so "small enough" is a number you can see, not a guess. The before-and-after preview updates too, letting you hunt for the exact point where file size and image quality meet — usually around 75–85% quality for photos.
JPEG or WebP?
WebP is the modern choice: at the same visual quality it produces noticeably smaller files than JPEG, and unlike JPEG it stores transparency, so PNG logos and stickers compress cleanly with their see-through areas intact. JPEG remains the universal fallback — if you are emailing photos or sending them to software that predates the smartphone era, a JPG will open anywhere. This compressor defaults to the smarter pick for your file and lets you switch with one click.
Compress images on any device
There is nothing to install. Open this page on an iPhone, an Android phone, a tablet or a desktop browser and the same slider-and-preview workflow is there. Because everything is processed locally in your browser with JavaScript, your photos are never uploaded to a server — you could disconnect from the internet after the page loads and the tool would still work.
More free image tools
Negato's tools all respect your file: local processing, no watermarks, and an export size you control. Invert image colors to create a photo negative, flip or rotate a picture, convert to grayscale for a natural black and white look, or edit PNG colors to replace and recolor specific shades — all free and watermark-free.
Frequently asked questions
Should I compress to JPEG or WebP?
WebP gives smaller files at the same quality and keeps PNG transparency, so it is the best default for the web. JPEG is the safer choice when you need maximum compatibility with older apps and devices — every tool on earth opens a JPG.
What happens to transparent areas in a PNG?
WebP output keeps transparency exactly as it is. JPEG cannot store transparency, so the compressor places your image on a plain white background — the preview shows you exactly what the saved file will look like.
How much smaller will my image get?
Photos saved as quality 80 JPEG or WebP typically shrink by 60–90% with no visible difference. The live size readout above the download button shows the exact result for your file before you save it.
Is compressing an image the same as resizing it?
No — compression shrinks the file size by trading a little image data, while resizing changes the pixel dimensions. They solve different problems and stack well: scale a photo to the size you actually need first, then compress it. Our image resizer handles the first step and keeps transparency intact.
Are my photos uploaded when I compress them?
No. The compression runs entirely in your browser with HTML5 Canvas — the file never leaves your device. You can even disconnect from the internet after the page loads and keep compressing.
How does lossy compression actually shrink a file?
JPEG and WebP throw away detail your eye is least likely to miss: fine high-contrast patterns first, then color precision. Around quality 80 most photos lose data you cannot see; below roughly 50, blockiness and smearing appear. The slider sets how much detail may be discarded.
How do I hit a target file size, like under 200 KB?
Drag the quality slider and watch the live readout — it re-encodes your exact file, so the size shown is the size you save. Step the quality down until you land under the limit, and switch to WebP for extra room at the same visual quality.
Should I compress PNG logos too?
Photographs compress best as JPEG or WebP. For logos, stickers and screenshots with sharp edges, WebP keeps transparency and still shrinks the file — plain JPEG would flatten those see-through areas onto white.
Invert Image
Turn any picture into a color negative — all colors, single RGB channels or grayscale.
Open the inverter →Flip Image
Mirror horizontally, flip vertically, or rotate 90° and 180°. Same instant, watermark-free workflow.
Open the flipper →Grayscale Image
Convert to natural 256-shade grayscale — the photographic alternative to hard black and white.
Open the grayscale converter →Edit PNG Colors
Replace colors, remove color from a PNG, recolor with the bucket or invert.
Open the color editor →Resize Image
Scale to exact pixels or quick percentages with aspect ratio lock — transparency intact.
Open the resizer →PNG Color Changer
Change the color of a PNG in one click — swap any shade, edges stay soft.
Open the color changer →Rotate Image
Turn a photo 90°, 180° or any custom angle — the canvas expands so nothing is cropped.
Open the rotator →Black & White Converter
Convert any photo to black and white with natural luminance shades — transparency preserved.
Open the B&W converter →Negative Image Maker
Turn any photo into a film-style negative — or restore a scanned negative back into a photo.
Open the negative maker →Film Negative to Positive
Turn scanned film negatives into viewable photos — orange mask handled, full resolution kept.
Open the film converter →Compress PNG to 100KB
Shrink big PNG files toward a 100 KB target in your browser.
Open the PNG compressor →