Original 2.4 MBVerified output 50 KB
Private, browser-based image resizing
Increase image size to exactly 50KB
Use the preset when a form requires a 50KB image rather than a loose maximum. The downloaded blob is checked against 51,200 bytes before it is offered to you.
Only the file size changes in this example.
Original file size2.4 MB
Exact output size50 KB
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 50 KB
Profile portrait
Original 960 KBVerified output 50 KB
Product image
When a 50KB target is useful
At 50KB, photo-heavy PNG files may need smaller dimensions. Keep dimension reduction enabled, or choose WebP when the portal accepts it. Increasing bytes to 50KB does not restore detail missing from the source.
Compact profile photos
Prepare a portrait for older application portals with a strict 50KB field.
Document thumbnails
Create a lightweight preview while keeping the selected JPG, PNG or WebP format.
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
Are my images uploaded?
No. Processing happens in the current browser tab. The server does not receive image contents, file names or output files.
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.
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.
Will image dimensions change?
Increasing file size usually keeps the same dimensions. Reaching a small maximum may require fewer pixels, and the result shows both dimensions.