Compress JPEG to 4MB
A 4 MB JPEG budget suits detailed photographs and scans that exceed an upload limit but do not need aggressive web-thumbnail compression.
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Multiple images? Compress them all at once
To meet the file size limit, pixel dimensions may be reduced proportionally if needed.
Got more images? Try Bulk Compress →
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Reduce Large Photos Without Throwing Away Detail
Use a multi-megabyte JPEG budget for resolution, texture and dependable compatibility.
A 4194304-Byte Ceiling
Four binary megabytes leave substantial room for photographic texture while reducing oversized camera exports.
Preserve High-Resolution Detail
Portraits, artwork and scans can often retain broad dimensions and fine texture within this generous target.
Automatic JPEG Quality Search
The browser finds an encoding level automatically instead of asking you to guess a manual quality percentage.
Dimensions Usually Have Room
Most photos keep useful resolution, though exceptional JPG output may be scaled if encoding alone cannot meet 4 MB.
Always Export as JPEG
JPG, PNG and WebP sources are accepted, but the download is JPEG and transparent input is flattened.
Large Files Stay Local
Conversion and compression run inside your browser, so the source is not uploaded to ResizeBox.
Create a 4 MB JPEG in 3 Steps
Check the source size, configure dimensions and inspect the JPEG export.
Upload a Large Image
Choose a JPG, PNG or WebP up to 20 MB and start from the cleanest available original.
Keep the 4 MB Target
Enter required width and height; this dedicated page always exports JPEG.
Review the Download
Confirm actual size, resolution, texture and any flattened transparency before use.
Create a 4 MB JPEG Copy
Reduce an oversized source locally while retaining the detail allowed by a generous JPEG budget.
4 MB JPEG Compression FAQ
How a large JPEG target affects resolution, conversion and output size.
ResizeBox uses binary units, so 4 MB equals 4194304 bytes.
Not necessarily. The encoder aims toward the ceiling and never pads a smaller result.
Often, although exceptionally detailed sources may still need lower dimensions.
Yes, but the output is JPEG and transparent areas are flattened.
Target compression is skipped, but JPEG export may still re-encode or convert the file.
Yes, if JPEG encoding adjustments alone cannot meet the target.
No. JPEG quality is searched automatically while you control dimensions and target size.
No. All conversion and compression happen locally in your browser.
Yes, our image resizing tool is completely free to use. No registration required, no watermarks, and no hidden fees. Simply upload your image and resize it to your desired dimensions.
Absolutely! All image processing is done locally in your browser. Your images are never uploaded to our servers, ensuring complete privacy and security of your files.
Popular resize presets
Jump to the most commonly used image sizes for your projects