Free to use · Processed in your browser
Image Compressor Online Keep the detail. Cut the size.
Use our free image compressor to make JPG, PNG and WebP files smaller. Add one picture or a batch, choose a compression mode, then compare the result before you download. Keep the detail that matters, with a file size that makes sense.
- JPG · PNG · WebP
- 20 images per batch
- 10 MB per image
- 60 MB total batch
A practical compression guide
A smaller file should still look right.
A useful image compressor saves space while keeping the parts you actually notice: readable text, clean edges, natural colours and fine detail. Here is how to choose settings, handle a batch and judge the result properly.
01 / Start here
How to use this image compressor
Choose settings first
Select an output format, compression mode and longest-edge setting. Keep the original format and dimensions when you want a straightforward size comparison.
Add your images
Choose images or drag supported files into the tool. The image compressor processes the queue automatically, so there is no separate compress button to press.
Compare the result
Read the original and new file sizes, then select Compare. Check lettering, fine patterns, smooth backgrounds and transparent edges before accepting a smaller version.
Download what you need
Save each completed image separately, or wait for the batch to finish and choose Download all ZIP. Download your results before closing or refreshing the page.
Changing a setting? Settings apply to newly added files. To try another setting on an existing image, clear the batch and add the original again. This avoids compressing an already compressed copy.
02 / Choose your balance
Which compression mode should you choose?
Start with Auto · balanced. The right image compressor setting depends on the picture: a photograph, a transparent logo and a screenshot with tiny text do not need the same treatment.
| Mode | Start here when | What to check |
|---|---|---|
| Auto · balanced | You want a sensible first attempt at reducing size. | Compare the visible detail and the bytes saved. |
| Higher quality | Small text, detailed patterns or subtle gradients need more care. | The file may be larger than in the other modes. |
| Smaller file | File size matters most and some visual change is acceptable. | Watch for soft text, blocky areas and banding. |
These are encoder presets, not percentages of quality remaining. A setting that works well for one image can look different on another. Keep the first result that meets your size requirement and still looks right.
03 / Understand the trade-off
Can you compress images without losing quality?
When people search for an image compressor without losing quality, they often mean a smaller picture that looks unchanged. That is different from preserving every original pixel.
Lossless compression
Preserves the decoded pixel information. Savings depend on how efficiently the original was stored; an already efficient file may not become much smaller.
Lossy compression
Changes some image information to reduce size. At a suitable setting the difference can be hard to notice, but aggressive compression can remove visible detail.
This image compressor uses lossy JPEG and WebP encoding, and palette reduction for PNG output. It does not provide a dedicated pixel-perfect lossless mode. Choose Higher quality and compare the result when fine detail matters.
Judge the downloaded file at its intended display size, then inspect critical details at 100% zoom. A fitted preview can hide changes that become noticeable when enlarged.
04 / Work through a batch
Bulk image compressor, free for up to 20 images
Use this bulk image compressor free of charge to process several still images in one queue. Set the options before adding the files, review individual results and download the finished batch as a ZIP.
- 20 filesMaximum images in one batch
- 10 MBMaximum size of each image
- 60 MBMaximum combined input size
Each image must also be no larger than 12 megapixels, with no side above 16,384 pixels. For example, 4,000 × 3,000 pixels is 12 megapixels. Split larger collections into separate batches rather than filling the browser's memory.
Keep similar images together. Photos can often share a setting, while small lettering or transparent artwork deserves a closer check. A batch image compressor saves repeated work, but the best result still needs a quick visual review.
05 / Pick the right format
JPG, PNG or WebP: what should you keep?
The image compressor accepts and exports these three formats. Keep the original format for a simple comparison, or try another supported output and check both the size and appearance.
| Format | Useful starting point | Important detail |
|---|---|---|
| JPG / JPEG | Photographs and other opaque images. | No transparent background. This tool fills transparent areas with white when exporting JPG. |
| PNG | Transparent artwork, graphics and images with crisp edges. | This tool reduces the colour palette. Check gradients, text and edges closely. |
| WebP | A smaller alternative to test for photos or transparent images. | Supports transparency. This tool uses lossy WebP encoding; savings vary. |
Changing the extension alone does not convert an image. Use the output-format control, then check the downloaded file. A different format is worth keeping only when it meets your requirements better.
06 / Plan the size
Work out the reduction you actually need
Enter the current size, your target and the number of images. This planner shows the reduction needed; it does not predict what the image compressor will achieve.
A 75% reduction would take each image from 2 MB to 500 KB. This is a planning example, not a compression result.
Use the average size for a rough batch estimate. This calculator uses 1 MB = 1,000 KB. Actual file sizes and achievable savings vary.
Trying to get below 100 KB or 200 KB?
This image compressor has no exact-KB target control. Try Smaller file, compare the output and, if the required dimensions allow it, select a lower longest-edge limit before adding the original again.
A fixed byte target cannot be guaranteed for every picture. A detailed photograph and a simple graphic can have very different file sizes even at the same dimensions.
07 / Separate size from dimensions
Compression and resizing are different
Compression changes how the image is encoded. Resizing changes its pixel dimensions. An image compressor can reduce bytes without changing width and height, but reducing dimensions can provide additional savings when fewer pixels are enough.
Choose Keep dimensions to retain the original width and height. The available longest-edge limits are 1,920, 1,280 and 800 pixels; smaller images are not enlarged. Keep the original dimensions when a minimum resolution is required.
08 / Judge the result
What makes the best image compressor for your file?
The best image compressor is the one that meets your size requirement while preserving the details you need. The largest saving is not automatically the most useful result.
- Readability: Small Hindi or English letters should remain easy to read.
- Edges: Check outlines, fine patterns and areas around transparent cutouts.
- Colour: Look for bands in gradients or unexpected changes in subtle shades.
- Dimensions: Confirm the result still has enough pixels for its purpose.
- Measured savings: Compare the actual bytes, not only a large percentage.
09 / Common questions in practice
When an image does not get smaller
The file is already well compressed
If the image compressor produces a larger file while keeping both format and dimensions unchanged, it keeps the original instead. “Already optimized” means this attempt did not produce a smaller replacement.
A format conversion increases the size
Changing format or dimensions does not guarantee a smaller result. Compare the downloaded version with the source and keep the version that best fits your needs.
Processing fails or the browser slows down
Check the format, file size and pixel limits. Try a smaller batch and an updated browser with the required image-processing support. Download completed results before clearing the queue.
10 / Clear answers
Image compressor FAQs
Is this image compressor online free to use?
Yes. The tool is free to use and does not require an account. Each batch can contain up to 20 supported still images, subject to the file-size and pixel limits listed above.
Are my images uploaded to a server?
The compression code processes image files locally in your browser. It does not send your image bytes to a compression server. Save the downloads before leaving the page.
Can I use the image compressor without changing dimensions?
Yes. Select Keep dimensions before adding your files. The tool then keeps the original width and height while attempting to reduce the encoded file size.
Does PNG compression always mean no quality loss?
No. Although PNG uses lossless encoding, an optimizer can first reduce its colour palette. This tool uses palette reduction, so compare the result rather than assuming every pixel remains identical.
Can this image compressor preserve a transparent background?
PNG and WebP output support transparency. JPG does not; this tool places transparent areas on a white background when exporting JPG.
Can I compress GIF, HEIC, SVG or animated images here?
This version accepts still JPG, PNG and WebP images. GIF, HEIC, SVG, animated PNG and animated WebP are not supported. Choose a compatible still image before starting.
Why did changing the mode not update my existing results?
Options are saved when files enter the queue. To compare another mode, download anything you need, clear the batch and add the original files with the new settings.
Is a ZIP download an extra round of image compression?
No. The ZIP groups your completed files into one download. It is a convenient way to collect results, not another quality setting for the images.
Further reading: Google's guide to compression quality and WebP format questions.