Resize Image in KB
Set a precise KB target for strict upload limits and export a lighter image without guessing. Fast local processing keeps files private.
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Precise KB File Size Control
Meet strict caps with clean compression and careful dimension tuning.
Exact KB limits
Set a precise KB ceiling for forms, email, or CMS uploads and portals. The tool tunes compression to meet the cap so you pass limits on the first try.
Controlled compression
Quality adjusts in small steps to keep edges, text, and gradients clean. This avoids harsh artifacts, so even small files look professional on the web.
Dimension trim when needed
If the file is still too large, reduce width or height in gentle increments while keeping aspect ratio locked to prevent stretching or awkward crops.
JPG and WebP choices
Compare JPG and WebP outputs to hit your KB target with the best appearance. WebP saves bytes while JPG stays compatible with older platforms and tools.
Live size feedback
The estimated size updates as you tweak settings, helping you stop as soon as the file falls within the limit without repeated downloads or reuploads.
Local private workflow
Everything runs in your browser, so images never upload to a server. Work faster with sensitive files for teams and keep client assets private for quick approvals.
Reach a KB Target in Three Steps
Upload once, set your KB size, and export a lighter file.
Upload your image
Drop in a JPG, PNG, or WebP and the preview appears instantly. Large files are fine, and processing stays on your device.
Set the KB target
Enter your KB goal, choose KB or MB units, and adjust format or dimensions only if the estimate stays above the cap for your platform.
Download the result
When the size meets the limit, download the new file. You can refine settings and export again without reuploading as needed.
Hit Your KB Limit Fast
Meet strict file caps without trial and error. Set a KB target, fine tune quality, and export a clean lightweight image locally in seconds.
KB Resize FAQ
Common questions about targeting a specific KB file size.
The tool compresses the image until the estimated file size falls at or under the KB number you set. It reduces quality in small steps first and only lowers dimensions if needed to keep the image looking acceptable.
Yes. Use the unit selector to switch to MB for a larger ceiling. The same targeting logic applies, and the tool searches for the highest quality that fits within the selected limit for your upload. Useful when a service lists limits in MB.
It targets the limit closely, but exact bytes can vary with image content and format. If you end up slightly above the limit, lower quality a bit or reduce dimensions slightly and export again to land within the requirement.
Dimensions stay as entered unless the target is very small. When quality changes are not enough, the tool suggests smaller width and height while keeping aspect ratio locked, so the image stays proportional and not stretched.
JPG is the safest choice for broad compatibility and photos. WebP often reaches a lower KB size at similar quality, but some platforms do not accept it. Try both and keep the file that looks clean and uploads to your platform.
If the original file is below your KB target, you can export without extra compression and keep the current quality. This is useful when you only need to confirm the file meets a cap or to strip metadata before delivery.
No. Processing happens locally in your browser, so files never leave your device. This keeps private or client images secure and makes repeated exports faster because nothing is sent to a server. It works after the page loads.
Use small quality reductions first and avoid aggressive downscaling. If the file still needs to shrink, try WebP or lower dimensions slightly while keeping the ratio locked. Small changes often save KB while preserving clarity.
Yes. You can use the tool for free without creating an account, entering a credit card, or installing software. There are no usage caps or watermarks, so you can edit as many images as you like and download full-quality results any time.
No. All processing happens locally in your browser, which means files stay on your device and are never sent to our servers. Once you close the tab, nothing is stored on our side, making it safe for personal and client work.