Image Compressor
Shrink PNG, JPG and WebP files with a live quality slider and before/after size comparison.
Free Online WebP, JPG and PNG Image Compressor
Large images are the single biggest cause of slow web pages. A typical smartphone photo weighs 3–6 MB, yet the same picture rendered at web quality often needs less than 300 KB — a 90% saving that visitors feel immediately as a faster page load. This free online image compressor lets you find that balance yourself, with a live quality slider and an honest before/after size comparison.
Unlike most compression websites, JebaTech never uploads your picture. The file is decoded into an HTML canvas inside your own browser and re-encoded with the quality factor you choose using the native canvas.toBlob() API. That means no upload wait, no queue, no file-size ceiling imposed by a server, and — most importantly — no copy of your photo sitting on someone else’s hard drive.
Key features
- Live quality slider — drag from 1% to 100% and watch the output size recalculate in real time.
- Three output formats — re-encode to WebP for the smallest files, JPEG for universal support, or PNG when you need lossless output.
- Before/after comparison — original size, compressed size and the exact percentage saved, shown side by side.
- Optional downscaling — cap the longest edge to shrink oversized camera images before compression for even bigger savings.
- Batch friendly — compress one image, download, and drop in the next without a page reload.
This tool runs entirely inside your browser using native Web APIs. Your files and text are never uploaded to a server, never logged and never shared with third parties.
How to use: Image Compressor
- Add your image
Drag a JPG, PNG, WebP or GIF file onto the drop zone, or click it to open your file picker. The image is read locally with the FileReader API. - Pick an output format
WebP gives the smallest files at equal visual quality and is supported by every modern browser. Choose JPEG for maximum compatibility, or PNG to keep transparency losslessly. - Drag the quality slider
Start around 75–80%. For photographs, quality below 60% begins to show visible blocking artefacts; for flat graphics and screenshots you can usually go lower. - Check the savings, then download
Compare the original and compressed sizes. When you are happy with the result, click Download to save the optimised file to your device.
Technical specifications
| Processing location | Entirely in your browser — no server round trip |
|---|---|
| Data uploaded | None. Files and text never leave your device |
| Price | Free — no account, no trial, no usage cap |
| Category | Media |
| Works offline | Yes, once the page has loaded |
| Browser support | Chrome 90+, Edge 90+, Firefox 90+, Safari 15+ |
| Interface languages | English, 中文, हिन्दी, Español, العربية |
Frequently asked questions
Does compressing an image reduce its quality?
JPEG and WebP use lossy compression, so some data is discarded — but at 75–85% quality the difference is usually invisible to the human eye while the file gets 60–80% smaller. PNG output is lossless, so quality is preserved exactly, though the savings are smaller.
What is the best format for web images in 2026?
WebP is the best default. It typically produces files 25–35% smaller than an equivalent-quality JPEG and is supported by Chrome, Edge, Firefox, Safari and all current mobile browsers. Keep a JPEG fallback only if you must support very old software.
Are my images uploaded to a server?
No. Every step — decoding, resizing and re-encoding — happens inside your browser using the Canvas API. Your image never touches the network, which is why compression starts instantly even for very large files.
Is there a file size limit?
There is no limit imposed by us, because there is no upload. The practical ceiling is your device memory; images up to roughly 50 megapixels compress comfortably on a typical laptop or modern phone.