JPEG CompressorCompress JPEG online.
Compress JPEG online.
Up to 90% smaller.
Fine-grained quality control via the Canvas API — directly in your browser. Nothing uploaded, nothing stored.
Free · No account · No upload
No upload100% privateFree forever
Processing securely on your device — no data sent to any server
Drop your JPEG files here
JPEG · JPG files · no file size limit
Privacy Note: We use your browser's hardware to process this file. Your JPEG stays on your computer throughout the entire process — nothing is transmitted.
No upload·100% private·Instant
How it works
Three steps. Under 10 seconds.
Drop your JPEG
Drag a JPEG or JPG file onto the zone or click to browse. No file size limit.
Adjust the quality slider
Lower values produce smaller files. Quality 75–85 is the standard for web and email use.
Download your JPEG
Your browser compresses using the Canvas API. No data is sent over the network at any point.
The right quality setting for every use case.
JPEG quality controls how aggressively high-frequency image data is discarded. At quality 100, files are large. At quality 50, artefacts may be visible in fine-detail areas.
| Quality | Best for | Typical reduction |
|---|---|---|
| 90–100 | Print, archival, portfolios | 10–30% smaller |
| 75–85 | Web images, social media | 50–75% smaller |
| 60–75 | Email attachments, previews | 65–80% smaller |
| 40–60 | Thumbnails, rough previews | 75–90% smaller |
Why compress JPEG images?
- Web performance. Images account for most page weight on websites. Compressing JPEGs reduces load times, improves Core Web Vitals scores, and directly impacts Google rankings.
- Email attachments. Most email providers limit attachments to 10–25 MB. Compressing your photos before attaching ensures they send without bouncing.
- Platform upload limits. Real estate sites, job boards, and school portals often cap image uploads at 1–5 MB. Compressing first prevents upload rejections.
- Storage efficiency. Whether archiving photos on a hard drive or in cloud storage, compressed JPEGs let you store more images in the same space.
- Faster sharing on mobile. Sending large JPEGs over WhatsApp, Telegram, or iMessage consumes significant mobile data. Compressing first makes sharing faster and cheaper.
Privacy by architecture
Your files never leave your browser.
Most online tools upload your file to a server, process it remotely, then send it back. This tool is architecturally different: compression runs via the Canvas API on your CPU. There is no server that receives your image. Not even temporarily.
- No file data transmitted over the network at any point
- No account, sign-in, or email required to use any feature
- Closing the tab clears all data from browser memory completely
- Open-source processing: browser-native Canvas API encoder
FAQ
Frequently asked questions
What JPEG quality setting should I use?
For websites and social media, 70–85 is the sweet spot — files are typically 60–75% smaller than quality 100 with virtually no visible difference at screen sizes. For print or archival, use 90–95. For thumbnails or previews, 50–65 is acceptable.
Does JPEG compression permanently reduce quality?
Yes. JPEG is a lossy format — each time you compress and re-save a JPEG, some image data is discarded. Keep the original file and use the compressed version only for its intended purpose (web, email, etc.).
What is the difference between this and converting to WebP?
WebP achieves smaller file sizes than JPEG at equivalent visual quality. If you need a JPEG specifically — for a platform requirement, email compatibility, or printing — use this compressor. If format does not matter, converting to WebP will give you an even smaller file.
Is my JPEG uploaded to a server?
No. All compression runs in your browser using the Canvas API. Your file never leaves your device — not even temporarily.
Can I compress multiple JPEG files at once?
Yes, with no batch limit. Drop as many files as you need — all processing runs locally in your browser.
Does compressing a JPEG change its pixel dimensions?
No. Compression reduces file size in bytes only. A 4000×3000 pixel image remains 4000×3000 after compression. To change pixel dimensions, use the Resize Image tool.
What is the maximum file size this tool handles?
There is no file size limit — the only ceiling is the memory available on your device. All processing runs locally in your browser, so very large files may take a moment longer to process.
Why does my JPEG look the same at quality 80 and quality 95?
JPEG quality differences are often imperceptible at screen sizes. At quality 80 the file can be 60% smaller than quality 95 with no visible difference on a monitor. The difference only becomes noticeable when zoomed in past 100% or when printing large format.
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