Reduce any image below 500KB directly in your browser. Ideal for email attachments, social media uploads, cloud storage, and website images.
Last updated: September 2026
480KB
Default Target
Safe Margin
Under 500KB
JPEG, WebP
Re-encoded Output
Private
No Uploads
Drop image here to compress to 480KB
JPEG, PNG, WebP, AVIF, HEIC. All processing stays in your browser.
Default target is 480KB. Adjust the target above if your limit differs.
Drop or select your image
JPEG, PNG, WebP, AVIF, HEIC or HEIF. Nothing is uploaded, it stays on your device.
Confirm the target
Defaults to 480KB, a safe margin under a 500KB limit.
Finds the highest usable quality
Binary search over encoder quality, keeping visual quality as high as possible.
Download your compressed image
Preview and size stats appear, click download to save the file.
Common reasons people compress images under 500KB
A 500KB target is useful when a destination states that maximum, or when you want a smaller file for faster transfer and lower storage use. Always check the destination's actual requirements.
Email attachments
Smaller images transfer faster and use less mailbox storage, especially when a message contains several attachments. Check the service's total attachment limit before sending.
Social media uploads
A smaller source can upload faster on a limited connection. Social platforms may resize or recompress it again, so check the preview after publishing.
Cloud storage sharing
Smaller files transfer faster and use less storage, especially when a folder contains many images or recipients use limited connections.
Website and CMS uploads
Smaller files can reduce transfer time when their dimensions, format and delivery settings also match the page layout.
File size and pixel dimensions describe different things. A 500KB target limits how much storage or transfer data the file uses, but it does not define its width or height. This tool first adjusts the JPEG or WebP encoder setting while keeping the original dimensions. If that cannot produce a usable result under the target, it reduces the dimensions in steps and reports the change with the result.
For email, a smaller image can send faster and reduce the total size of a message with several attachments. It is not a universal email requirement, since providers and organizations set their own limits. If a message is rejected, check the total attachment allowance, accepted formats and any policy applied by the sender or recipient.
Social platforms can resize or recompress an image after upload. Compressing the source to 500KB can reduce upload time, but it does not guarantee that the published image will keep the same dimensions, file size or visual quality. Use the dimensions and format requested by the destination, then inspect the published result instead of relying on file size alone.
Websites and content systems may also generate their own responsive versions. For images going on a website, file size is only one part of the decision. Choose suitable pixel dimensions, format and compression for how the image will be displayed. The compress for website speed tool is worth checking if page load performance is the primary goal.
Some forms state lower limits such as 200KB or 100KB. A rejection can also be caused by the format, pixel dimensions, filename or another validation rule, so reducing file size is not always the complete fix. If the destination specifically requires a smaller file, try compressing under 200KB instead. For a stricter stated limit, the under 100KB tool handles those with the same binary search approach.
Using 500KB without checking the destination
A smaller file is not always required. Check the stated format, file-size and pixel-dimension limits first so you do not remove more detail than necessary.
Not checking whether the real limit is tighter
Some forms use lower limits such as 200KB or 100KB. If a 480KB result is rejected, confirm the stated limit and use the matching target rather than repeatedly guessing.
Expecting PNG output for a transparent image
Re-encoded results use JPEG or WebP. If your source has transparency you want to keep, choose WebP because JPEG flattens transparent areas. An already-small original is offered unchanged in its existing format.
Assuming email attachment limits apply per-message rather than per-file
Some mail systems cap total message size across all attachments combined, not just each individual file. If you're attaching several images, check the combined size, not just each one under 500KB.
Assuming every platform treats the file the same way
A destination may preserve, resize or recompress an uploaded image. A 500KB source controls the upload size, but it cannot guarantee the final dimensions or quality after processing.
A 500KB target is useful when a website, form or content system states that limit, or when you want a smaller file for faster transfer and lower storage use. Email services usually allow larger attachments, so check the actual requirement instead of assuming a 500KB email limit.
The 480KB default leaves a small margin below a stated 500KB maximum. File-size units and server-side validation can vary, so a result slightly below the limit is safer than trying to land on the boundary. You can change the target if your destination specifies another value.
It depends on the original dimensions and detail. The tool checks the maximum encoder setting first, then searches for the highest setting that fits. If quality adjustment is not enough, it may also reduce pixel dimensions. Review the preview before downloading.
JPEG, PNG, WebP, AVIF, HEIC and HEIF are accepted as input. Re-encoded results use JPEG or WebP. If the source is already below the target, the tool offers the unchanged original in its existing format. Choose WebP when re-encoding an image whose transparency you need to keep.
It can. The tool first tries to meet the target at the original dimensions. If that would require an excessively low encoder setting, it reduces the dimensions in steps to produce a more usable result. The result panel reports when dimensions were scaled.
Yes, if the destination accepts JPEG or WebP and either states a 500KB limit or benefits from a smaller upload. Social platforms may resize or recompress the file again, so a 500KB source does not guarantee a particular final quality.
Metadata is removed when the image is decoded and re-encoded as JPEG or WebP. If the file is already below the target and you choose to download the unchanged original, its existing EXIF, GPS and other metadata may remain.
No. All compression runs entirely in your browser using WebAssembly. Your image never leaves your device.
No, this tool handles one image at a time. For a batch of files, run each one through individually.
The repeated encoding search runs in a background Web Worker, which helps keep the page responsive. Initial decoding still uses browser resources, and extremely large images can be slow or hit a device memory limit.
Yes. The tool keeps the decoded image cached, so adjusting the target size field or switching between JPEG and WebP after a result already appears triggers an automatic recompress rather than asking you to drop the file in again.
No sign-up. No uploads. Drop your image above and download the compressed version in seconds.
