Free Image Compressor
100% Private — No Upload RequiredCompress JPG, PNG, and WEBP images while keeping them sharp. All processing happens in your browser — your image is never uploaded.
Drop an image here
or click to browse · JPG, PNG, WEBP · max 10 MB
How to compress an image online
- Drag your JPG, PNG, or WEBP image into the box above (or click to choose).
- Pick a quality level — 75 is a great default that balances size and clarity.
- Click Compress image and download the result.
JPEG vs PNG vs WEBP
JPEG is best for photos. PNG preserves transparency and is best for logos, screenshots, and graphics with sharp edges. WEBP typically beats both for the web — about 25–35% smaller than JPEG at equivalent quality.
How image compression works
JPEG compression discards image data the human eye is least likely to notice — fine colour gradations and high-frequency detail in textured areas. The "quality" slider controls how aggressively this happens. At quality 90, file size drops 70-80% from a phone's default while remaining visually indistinguishable. At quality 50, file size drops 90% but compression artefacts (blockiness, colour banding) become visible. PNG compression is lossless — file size reduction comes from deduplicating identical pixel patterns, but originals with photographic content rarely shrink as much as JPEGs.
When to use which format
JPEG for photos, scanned documents, anything with continuous colour gradients. Lossy but very efficient. Avoid for screenshots with text or graphics with sharp edges.
PNG for screenshots, logos, graphics with transparency, anything with sharp edges or text. Lossless. Larger files than JPEG for photos but better for graphics.
WebP a modern format from Google supporting both lossy and lossless modes. Roughly 25-35% smaller than JPEG at the same visual quality. Supported by all modern browsers as of 2026 but some older photo software cannot open WebP files.
Common Indian use cases
Compressing wedding photos before WhatsApp sharing (WhatsApp shrinks them to 1MB anyway, so pre-compress to 500-800 KB to control quality), compressing camera-roll exports for online job applications (Naukri, LinkedIn typically accept 1-2 MB max), compressing scanned documents for upload to government portals (income tax e-filing, passport seva, professional certifications often cap at 500 KB or 1 MB), and reducing photo size for blogs and websites to improve page-load speed.
Privacy
This compressor runs entirely in your browser. The image you select is processed in-memory and never uploaded to any server. You can verify by disconnecting from the internet after the page loads — the tool will continue to work offline.
Disclaimer
Compression is lossy for JPEG and WebP. Heavy compression cannot be undone — always keep your original. For professional photography, archival storage, or any photo you may want to print larger than 4×6 inches, keep an uncompressed master and use the compressed version only for web sharing.
FAQ
Will compression reduce image quality?
At quality 75, the difference is invisible to the human eye for almost all photos.
Where does my image go?
Nowhere. The image is read into your browser, compressed locally, and offered as a download. It never touches a server.
Why is PNG only slightly smaller?
PNG uses lossless compression — the quality slider has no effect. For larger savings, switch the output format to JPEG or WEBP.
Frequently asked questions
What's the maximum image size I can compress?
The tool handles images up to 50 MB. Larger images may slow your browser; close other tabs first.
Why does my PNG not shrink as much as my JPG?
PNG is lossless — it doesn't discard data, only deduplicates patterns. Photos compress poorly as PNG because they have few repeated patterns. For photos, convert to JPEG using the Image Converter tool, then compress.
Can I compress images in bulk?
Yes. Use the Bulk Image Compressor tool — drop in up to 30 files and download all compressed versions as a ZIP.
Is there a way to preview before downloading?
Yes. The tool shows a side-by-side preview of original and compressed versions with the file size comparison before you download.