What the result means
Set a size target such as 500KB or 1MB and let the browser adjust quality and format. If the target cannot be reached safely, the result status explains it.
Reduce images for upload limits
Size limit helper
Image Compressor
Compress images toward a target KB or MB size while keeping quality as high as possible.
Drag images here or click to upload
JPG, PNG, WebP, HEIC · up to 10 files · 20MB each · paste supported
Copy an image and press Ctrl+V to paste it here
Processed in your browser · no server upload
1. Choose2. Convert3. Download
Core Options
Adjust only what you need.
Advanced Settings
Tokens
Examplesample-image.webp
{name}=source filename, {index}=number. Leave blank to use the source filename.
Upload at least 1 image to run this tool.
Upload an image to compare the original and result here.
Uploaded files and conversion results will appear here.
Usage criteria
Image Compressor: how to review the result
Review what the tool changes and how to check the output before using it elsewhere. Comparing your inputs with the destination requirements helps prevent an otherwise valid result from being rejected.
Recommended workflow
- 1Upload images.
- 2Choose target size and format.
- 3Start compression.
- 4Download the smaller files.
Checks before finishing
After processing, review 500KB/1MB presets, WebP/JPG output, Savings ratio, image compressor, compress image online before using the result.
- 500KB/1MB presets
- WebP/JPG output
- Savings ratio
- image compressor
- compress image online
Processing method
Image output depends on source dimensions, file format, compression quality, and transparency. Photos, logos, and text-heavy graphics can react differently to the same setting, so review both pixel dimensions and visible quality.
How files and inputs are handled
Core processing runs in the current browser whenever possible. OneClickTool does not store original files or tool inputs on its own server. Review the preview and output values before downloading or submitting an important result.
Frequently Asked Questions
Can the target file size always be reached?
Not always. Some images cannot hit a very small target without visible damage, and the result status explains that.
Should I choose 500KB or 1MB?
Use the upload limit when you have one. Otherwise choose the smallest result that still looks acceptable.
Does compression change image dimensions?
Compression mainly changes quality and format. Use Image Resizer if you also need smaller pixel dimensions.
Supported Scope
Upload JPG, PNG, WebP, or HEIC images and compress them toward a target file size. Check the output size and reduction rate before downloading.
The exact KB target may not always be reachable because it depends on image content and resolution.
- image compressor
- compress image online
- reduce image file size
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