Image Compressor
Compress images in-browser — your photos never leave your device. JPEG, PNG, WebP output.
Drop image here or click to upload
Supports JPEG, PNG, WebP, GIF — max 20 MB
🔒 100% client-side — images never leave your device
💡 Compression Tips
For Web Images
Use WebP format at 75–80% quality. Up to 35% smaller than JPEG with same visual quality.
For Photographs
JPEG at 70–85% quality gives excellent results. Below 60% you may see compression artifacts.
For Logos & Text
PNG preserves crisp edges. Use WebP lossless for smaller file size with pixel-perfect quality.
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📖 Learn More About Image Compressor
Free Online Image Compressor — No Upload Required
Compress JPEG, PNG, and WebP images directly in your browser. Your photos never leave your device — all processing happens using the HTML5 Canvas API. Adjust quality, compare before/after sizes, and download in seconds.
When to Use Each Format
- JPEG — Best for photographs, product images, and complex scenes. Use 70–85% quality for the web. Artifacts appear below 50%.
- WebP — Google's modern format. 25–35% smaller than JPEG at equivalent quality. Supported in all modern browsers. Best choice for new web projects.
- PNG — Lossless format. Quality slider has minimal effect. Use for logos, icons, screenshots with text where pixel-perfect quality matters.
Recommended Quality Settings by Use Case
- Website hero images — 75–80% JPEG or WebP
- Thumbnails & previews — 55–65% JPEG
- Email attachments — 60–70% JPEG (reduces 3MB to ~400KB)
- Social media posts — 80–85% JPEG (platforms re-compress anyway)
- Product photos (e-commerce) — 82–88% JPEG for clarity
- Print & archiving — 90–95% JPEG or PNG lossless
Privacy & Security
Unlike cloud-based tools (TinyPNG, CompressJPEG), this tool is 100% client-side. Your images are processed in browser memory and never transmitted over the network. This makes it safe for sensitive photos, medical images, or confidential documents.
Frequently Asked Questions
Is my image uploaded to any server?
No. All image processing happens 100% in your browser using the Canvas API. Your images never leave your device. This tool works completely offline once the page is loaded.
What is the best quality setting?
For web use, 70–80% quality usually provides a good balance between file size and visual quality. For thumbnails, 50–60% is fine. For high-quality prints or archiving, use 85–95%.
Which output format should I choose?
JPEG: Best for photographs and complex images. WebP: 25–35% smaller than JPEG with same quality — best for web. PNG: Lossless (quality slider has minimal effect) — best for logos, screenshots with text.
Why does PNG output not reduce much?
PNG is a lossless format, so the quality slider doesn't significantly reduce file size. For PNGs, use WebP or JPEG output format for better compression. WebP supports both lossy and lossless compression.
What image formats can I upload?
You can upload JPEG, PNG, WebP, GIF, BMP, and most other common image formats. The tool accepts any file that your browser can load via an <img> element. Maximum recommended size is 20 MB.
What is the difference between lossy and lossless compression?
Lossy compression (JPEG, WebP lossy) permanently removes some image data to achieve smaller file sizes — great for photos where minor quality loss is acceptable. Lossless compression (PNG, WebP lossless) preserves all original data, keeping perfect quality but with less size reduction.
What quality setting should I use for social media?
For social media uploads, 75–85% JPEG or WebP quality works well. Social platforms re-compress your images anyway, so uploading at 90–100% quality rarely benefits the final result. Use 75% to save bandwidth on your end.
Can this tool compress images for email attachments?
Yes. Drop your image, set JPEG format at 60–70% quality, and download the compressed version. Most email attachments compress from 3–5 MB to under 500 KB without noticeable quality loss — well within email attachment limits.
How does this compare to TinyPNG or Squoosh?
Like Squoosh, this tool processes everything in your browser with no server uploads — fully private. TinyPNG uses server-side processing and limits free compressions. This tool is unlimited, free, and private, though it uses the browser Canvas API rather than advanced codecs like Squoosh's libsquoosh WASM.
Does compressing an image affect its dimensions?
No. This tool compresses quality/file size only. The output image has the same pixel dimensions (width × height) as the original. To resize dimensions, you would need an image editor like GIMP, Photoshop, or Canva.