Original 2.4 MBVerified output 1 MB
Private, browser-based image resizing
Increase image size to exactly 1MB
Here, 1MB means 1,048,576 bytes. The distinction matters because some systems use binary megabytes while others display decimal values without explaining the conversion.
Only the file size changes in this example.
Original file size2.4 MB
Exact output size1 MB
Pixel dimensions stay 1280 x 960
Set your target and add images
Private by designDrop images here or choose files
JPG, PNG or WebP. Up to 20 files, 20 MB each.
Real-world examples
The picture stays familiar. The file size becomes exact.
Photos, portraits and product shots can all be matched to a strict upload requirement. The final file is checked in bytes before download.
Original 1.8 MBVerified output 1 MB
Profile portrait
Original 960 KBVerified output 1 MB
Product image
When a 1MB target is useful
A larger file is not automatically a sharper image. The tool can preserve the encoded pixels and add valid container data, but it cannot invent texture or detail that was not present in the source.
Portfolio submissions
Prepare a presentation image for a fixed 1MB attachment requirement.
Editorial handoffs
Deliver consistent image files when a workflow specifies an exact byte target.
Three steps, no upload
The controls are intentionally direct. Choose images, set the byte requirement, then download verified results.
Select
Add one JPG, PNG or WebP, or choose a batch of up to 20.
Set target
Choose exact, maximum or minimum size in KB or MB.
Download
Every result is decoded and checked again before download.
Why exact KB matters
Government forms, job portals, exams, identity documents and content systems often enforce rigid file limits. A valid image can still be rejected when its byte count falls outside the stated range. This tool changes the encoded file size without claiming to create new visual detail.
File size and dimensions comparison
KBstored bytes
PXwidth x height
File size is not image dimensions
KB and MB measure stored bytes. Width and height measure pixels. An image can keep the same dimensions while its encoding changes, but a very small maximum may require dimension reduction. The result always reports both values.
Choose the format that fits the job
JPG
Usually compact for photos. Transparency is replaced with white.
PhotosPNG
Keeps transparency and sharp edges, but can be larger for photos.
TransparencyWebP
Often provides a useful balance of size, quality and transparency.
Modern webLocal processing is the privacy feature
The site does not need your image data to resize it. Files, names, previews and output blobs remain in browser memory. Optional analytics can record anonymous actions such as a completed batch, never file contents or file names.
Questions about exact image size
Does increasing KB improve image quality?
No. Adding encoded bytes does not create new visual detail. The purpose is to satisfy a file-size requirement, not to perform AI upscaling.
What does exact mean?
The downloaded Blob must contain exactly the target number of bytes. Targets use 1KB = 1024 bytes and are verified after processing.
What formats are supported?
JPG and JPEG, PNG and WebP are supported for input and output. GIF, SVG and HEIC are not supported in this version.
Is metadata kept?
No by default. Re-encoding removes common EXIF metadata, which can include camera and location information.