1. Add your images
Drop one file into the upload panel or choose several JPG, PNG or WebP images at once. The tool shows each original filename, format, dimensions and file size before processing.
FAST IMAGE COMPRESSION
Compress Image Online for Free
Use this free compress image tool to reduce JPG, PNG and WebP file sizes in seconds. Choose automatic compression, set a target such as 100 KB or 1 MB, compare the result, and download your optimized images without creating an account.
Free to useNo account requiredJPG, PNG and WebPSingle or batch download
Drop images here
Choose JPG, PNG or WebP files. You can add several images and process them together.
or drag and drop files into this panel · JPG · PNG · WebP · Up to 20 MB per file
0
files selected
Compression settings
PNG keeps transparency, JPG is efficient for photos, and WebP can offer a smaller modern output.
The result may be slightly smaller than the target so it stays under the limit.
Higher quality keeps more detail; lower quality creates a smaller file.
Optional maximum dimensions
Leave a field blank to preserve that side. The aspect ratio stays proportional.
Your files are processed in this browser session. We do not need an account for the basic workflow.
Ready to download
Compression results
Your processed images will appear here.
FAST IMAGE COMPRESSION
A good image compressor should show the trade-off before you publish. This compress image workflow keeps the preview, file size and dimensions visible after every run.
QUICK WORKFLOW
How to use the compress image tool in three steps
The compress image tool is designed for the task users came to complete: choose an image, select a practical setting, and save the smaller file. The original file stays available on your device so you can compare the output before replacing anything.
2. Pick a compression goal
Automatic mode is a quick default. Target size mode helps when a form, email or upload limit asks for 100 KB, 500 KB or 1 MB. Custom quality gives you a direct quality control.
3. Review and download
Run the compressor, compare the original and optimized sizes, then download a single result or the complete batch as a ZIP. Keep the original until you have checked the new file in its destination.
FORMAT GUIDE
Compress JPG, PNG and WebP files
The best output format depends on the image. When you compress image files, photos usually become smaller as JPG or WebP, while PNG is useful when transparent pixels, sharp interface graphics or flat colors matter. The tool keeps the choice visible instead of silently changing the format.
| Format | Best for | Practical tip |
|---|---|---|
| JPG | Photos, camera images and gradients | Use quality around 75–85 for a practical balance between detail and file size. |
| PNG | Transparency, screenshots, logos and flat graphics | PNG compression may need a dimension reduction when a strict target size is required. |
| WebP | Modern websites and smaller cross-platform downloads | Check the destination supports WebP before replacing a broadly compatible JPG or PNG. |
TARGET SIZE
Reduce an image to a target size
A quality percentage is not the same as a file-size limit. If a website asks for a photo below 100 KB, 200 KB, 300 KB, or 500 KB, an email attachment needs to stay under 1 MB, or a form rejects a large upload, target mode gives you a measurable goal. The result may be a little smaller than the selected limit because the compressor is designed not to exceed it.
100 KB
Useful for profile images, small forms and strict upload fields.
Open target tool →
30 KB
A strict target for signatures, profile photos and upload limits.
Open target tool →
200 KB
A middle limit for listings, forms and everyday web uploads.
Open target tool →
300 KB
A middle limit for listings, forms and everyday web uploads.
Open target tool →
500 KB
A practical compromise for documents, listings and email attachments.
Open target tool →
1 MB
Helpful when a portal or message service accepts medium-size images.
Open target tool →
2 MB
Keep more detail when a portal or attachment allows a larger image.
Open target tool →
5 MB
Keep more detail when a portal or attachment allows a larger image.
Open target tool →
10 MB
Keep more detail when a portal or attachment allows a larger image.
Open target tool →
4 MB
A practical middle limit for photos, portals and attachments that reject larger files.
Open target tool →
PRIVACY AND LIMITS
A browser-first image compression workflow
Basic compression runs in the browser session. That makes it convenient for a personal photo, a draft product image, a client asset or a screenshot that you do not want to upload just to test a smaller file. Your browser still controls the local preview and temporary object URLs, so download the result you want to keep and close the tab when you are finished.
The local workflow does not remove your responsibility for the source image. Only process files you are allowed to modify and publish. It also does not promise that every image can reach every target without visible changes: a highly detailed photo, a transparent PNG or an image with a very large canvas may need a lower quality setting, a smaller dimension, or a different output format.
Before you publish a compressed image, test the exact file in the place that will receive it. If you compress image files for an upload form, remember that the service may enforce a different byte definition, a CMS may rewrite metadata, and an email client may display a different size than your design mockup. The result panel gives you a measured starting point, but the final check should happen in the destination workflow with the downloaded file, not only in the browser preview.
A reliable image compression routine keeps three things separate: the untouched original, the optimized working copy and the final uploaded asset. When you compress image files for a team or a recurring campaign, record the target size, output format and display dimensions. This makes it easier to repeat a successful export, diagnose a rejected upload and update a page without accidentally compressing an already compressed copy.
Use the compress image tool as a review step, not as an automatic replacement for your source library. Keep one approved output for the website, form or email workflow and retain the original for future crops or format changes. If a file is already small, a second compression pass may add artifacts without creating a meaningful speed benefit, so compare the measured bytes before deciding to export again.
QUESTIONS
Compress image FAQ
Short answers to common image compression, format and upload questions.
How do I compress an image without losing visible quality?
Start with automatic mode, then check the preview at the size where the image will be used. For photos, JPG or WebP around 75–85 quality is often a useful starting point. If the file is still too large, reduce dimensions before pushing quality very low.
Can I compress JPG images online for free?
Yes. Add a JPG, choose automatic, target-size or custom-quality mode, and download the compressed result. No account is required for the basic browser workflow.
Can I compress PNG images and keep transparency?
Yes. Keep PNG selected when transparent pixels matter. If a strict target cannot be reached with quality alone, the tool may need to reduce dimensions because PNG encoding does not use the same quality control as JPG.
Can I compress several images at once?
Yes. Select multiple supported files, run the compressor once, then download individual outputs or the complete batch as a ZIP archive.
What is the difference between compressing and resizing an image?
Compression reduces the encoded file size. Resizing changes the pixel dimensions. A large image often needs both: resize it to the display dimensions, then compress the new file for faster delivery.
Will the compressed file always be exactly 100 KB?
No. Target mode aims to stay at or below the selected limit. The final size depends on the image content, dimensions, format and encoder, so it may be slightly smaller than the target.
BEFORE YOU PUBLISH
Use the smallest file that still looks right
Compression is a practical decision, not a race to the lowest number. Keep the original, compare the output at its real display size, and test the downloaded file in the website, form or app that will receive it.