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Add your images
Choose one or more supported images. The browser reads the files locally and prepares them for compression.
Compress Image
Compress images directly in your browser
Compress JPEG, JFIF, PNG, WebP, HEIC, HEIF, AVIF and SVG images, convert formats and target specific file sizes — all locally in your browser.
🖼️
Drop your images here
JPEG, JFIF, WebP, PNG, HEIC, HEIF, AVIF, SVG, BMP and TIFF
Your images never leave your device
Real test results · Example
See what JPEG compression changes
Real JPEG files generated using Image Toolroom, with exact file sizes checked against the original test archive. See how much space can be saved while keeping the same image dimensions.
1448 × 1086 pxJPEG → JPEGNo resizingOriginal JPEG: 2.43 MiB
Select compression quality
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Compressed 70%Original JPEGOriginal onlyCompressed only
Inspect fine details
Pixel-aligned crops of the real JPEG files. Enlarged for detail inspection without introducing another lossy export.
Original JPEG
2.43 MiB
Compressed at 70%
357.8 KiB
File size reduction
85.6% smaller
| Quality | File size | Reduction vs original JPEG |
|---|---|---|
| Original JPEG | 2.43 MiB | — |
| 85% | 516.4 KiB | 79.3% smaller |
| 70% | 357.8 KiB | 85.6% smaller |
| 50% | 266.4 KiB | 89.3% smaller |
Images shown are optimized previews. The measurements above are from the verified JPEG test files.
Compress images without sending them to an upload server
Image compression is useful when a photo is too large for email, a form has a file-size limit, a website needs lighter assets, or you simply want to save storage space. This tool lets you reduce file size directly in your browser while keeping control over the output format and quality.
You can use normal quality-based compression when you want a good balance between visual quality and size, or use a target file size when you need an image to fit under a specific KB limit. Because the processing happens on your device, the original image does not need to be uploaded to Image Toolroom for compression.
How it works
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Choose size and format
Keep the source format or select a compatible output format, then adjust quality or enter a target file size where supported.
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Download the result
Compare the new file size with the original and download the compressed image when the result fits your needs.
How to get a better compression result
- For photographs, JPEG or WebP usually gives a much smaller file than PNG while keeping good visual quality.
- For graphics, screenshots or images that need transparency, PNG or WebP may be a better choice than JPEG.
- If a website or application gives you a strict upload limit, use the target-KB option instead of guessing with the quality slider.
- Very aggressive compression can introduce visible artifacts around text, edges and fine texture, so check the preview before downloading.
Frequently asked questions
Does compressing an image reduce its dimensions?
Not necessarily. Compression mainly reduces the number of bytes used to store the image. You can keep the same width and height while reducing file size. If you also need smaller pixel dimensions, use the Resize Image tool.
Which format is best for the smallest file size?
It depends on the image. JPEG is widely compatible for photos, while WebP and AVIF can often produce smaller files at similar visual quality. PNG is useful when lossless output or transparency matters more than minimum size.
Can I compress an image to a specific KB size?
Yes, where the selected output format supports iterative quality adjustment. The tool tries to approach the requested size, although an exact byte-for-byte target cannot always be guaranteed.
Will compression remove image metadata?
Compression is intended to reduce image size, not to act as a dedicated metadata-cleaning workflow. If removing EXIF, GPS or other removable metadata is your goal, use the Remove Metadata tool.
Are my images uploaded?
The normal compression workflow runs locally in your browser. Your image does not need to be uploaded to an Image Toolroom server for the compression operation.
Helpful guide
How to compress an image without ruining quality
Learn when to resize, which format to choose and how to reduce file size without over-compressing the image.