Compress an image to 3 MB in seconds, free and 100% in your browser. Perfect for forms with a 3 MB upload limit. No upload, no signup, no quality guesswork.
Ideal for print-quality photos, professional client proofs, and upload forms that cap files at 3 MB — common on job portals, marketplaces, and document systems that reject anything larger.
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To compress an image to 3 MB (3,145,728 bytes) for free, drop it into SammaPix Compress and adjust the quality slider until the output meets the target — for most photos, quality 75-90% reaches 3 MB. Processing happens 100% in your browser using the Canvas API — no upload, no signup, no watermark. Tested on 100 real images: SammaPix matched SSIMULACRA 2 quality scores above 65 (no visible loss) at all output sizes >= 50 KB. For sizes below 25 KB, expect visible compression artifacts on photographic content — vector-style images and screenshots fare best.
Open the SammaPix Compress tool and drag your image into the drop zone. Supports JPEG, PNG, WebP, and GIF.
Adjust the quality slider until the output size is at or below 3 MB. Lower quality = smaller file.
Download your compressed image instantly. Everything runs in your browser — your photos never leave your device.
Typical results when compressing a photo to 3 MB.
| Property | Original | Compressed |
|---|---|---|
| File size | 45.0 MB | 3 MB |
| Quality | 100% | 88-95% |
| Size reduction | — | ~93% |
| Format | JPEG / PNG | JPEG / WebP |
At 3 MB you can keep full-resolution (4000+ px) photos at quality 92-96% — essentially indistinguishable from the original.
Many job and marketplace portals reject files over 3 MB — drop just under the limit (around 2.8 MB) to be safe against rounding differences.
For print proofs, 3 MB at full resolution holds enough detail for sharp A4 prints at 200-300 DPI.
If your source is a 20-50 MB RAW or TIFF, export to JPEG first, then use SammaPix to bring it down to 3 MB without visible loss.
Ready to compress?
Use Compress to reduce your images to 3 MB or below, or Convert to WebP for even smaller files at the same quality.
Open SammaPix Compress and lower the quality slider to around 90-94% — most high-resolution photos drop under 3 MB while staying visually identical. If needed, resize to about 4000 px on the long edge first.
Many portals (job applications, marketplaces, document systems) cap uploads at 3 MB to control storage and bandwidth. Compressing to just under the limit lets you submit a high-quality image without hitting the rejection threshold.
Barely. At 3 MB and full resolution, the image keeps enough detail for high-quality prints up to A4 at 200-300 DPI. The difference from the uncompressed original is only visible under extreme magnification.
If a form allows 3 MB, use it for a small fidelity gain on detailed images. For general web or email use, 2 MB or less is more practical and loads faster with no meaningful quality difference at screen resolution.
Compress to 2 MB
Best for high-quality prints, professional photography, large display images, and archival web galleries.
Compress to 1 MB
Ideal for print-ready web images, high-resolution product photos, and professional portfolios where maximum detail is needed.
Compress to 5 MB
For maximum-quality archival photos, large-format prints, and upload forms or applications that allow up to 5 MB — where you want to keep as much detail as possible while clearing the size limit.
Compress to 700 KB
Great for full-screen hero banners, photography galleries, high-resolution display images, and image-led landing pages where a single large visual carries the design.
100% private
All compression happens in your browser. Your images never leave your device — nothing is uploaded to any server.
Instant results
No waiting for server processing. Compress images in milliseconds using your device's own hardware.
Free, no limits
Compress as many images as you want. No watermarks, no sign-up, no daily caps on the free plan.