Image Compressor
An all-purpose image compressor. Keep the original format or convert, set quality or a target size, and resize. Everything runs in your browser.
Best for general size reduction. Example: cut a 5 MB JPG to under 1 MB.
Before you use: heavier compression trades some quality for smaller files.Best for: general size reduction. Not ideal for: changing dimensions — use a resizer.
- Upload an image.
- Adjust quality to shrink the file.
- Download the smaller image.
Image Compressor is a browser-based image tool on ImgToolsBase. An all-purpose image compressor. Keep the original format or convert, set quality or a target size, and resize. Everything runs in your browser. To use it, upload or drop your image and view the result directly in your browser — no signup and nothing to install.
How this tool works
What it does
Compresses JPG, PNG, and WebP images. It keeps the original format unless you choose to convert, and supports manual quality or a target file size in KB.
Format and transparency
Choose Same as input, JPG, PNG, or WebP. If you output JPG from a transparent image, you pick the background color used to fill transparent areas.
Privacy
Images are compressed on your device. No upload, and canvas re-encoding strips EXIF and GPS metadata. Your files are never sent to imgtoolsbase or any other server.
Image Compressor in your browser
Image Compressor is a general-purpose tool for shrinking JPG, PNG, and WebP files privately in your browser. It is the right starting point when you are not sure which specialized compressor you need.
Keep your original format with Same as input, or convert to JPG, PNG, or WebP. Pick a quality level, or set a target size in KB and let the tool iterate for you.
How to use Image Compressor
- Add a JPG, PNG, or WebP image with the upload box or by dragging it in.
- Choose an output format, or leave it on Same as input.
- Set a quality level, or choose Target file size and enter a KB value to aim for.
- Optionally resize, then click Process and Download the result.
Why use this tool
Keeps JPG as JPG, PNG as PNG, and WebP as WebP unless you choose to convert.
Set quality directly, or give a KB target and let the tool converge toward it.
Switch format to JPG, PNG, or WebP when conversion gives a smaller or more compatible file.
When you output JPG from a transparent image, choose the fill color instead of always getting white.
Common uses for Image Compressor
Compress images of different formats without converting everything to JPG.
Reduce page weight while keeping the format that suits each asset.
Aim for a KB target for portals and forms.
Move between JPG, PNG, and WebP when it helps.
When to choose Image Compressor
This tool is for shrinking an image's file size while keeping its dimensions the same.
Worked example: A 5 MB JPEG must drop under 1 MB for an upload limit. Lower the quality setting until the file fits, watching that the picture still looks clean.
Image Compressor reduces bytes, not pixels — choose the image resizer instead when you actually need smaller width and height.
- Compress to a target size where artefacts are not yet visible, then stop.
- Photographs tolerate compression better than sharp-edged graphics and text.
How do I compress an image to a specific KB?
Lower the quality until the output meets your target size; a target-size option makes hitting an exact KB figure straightforward.
Does compressing change the dimensions?
No — compression keeps the same width and height and reduces the file size by re-encoding the image data.
Frequently asked questions
Will it change my image format?
Only if you ask. The default is Same as input, which keeps JPG, PNG, or WebP. You can convert to another format from the dropdown.
How does target size work across formats?
In any output format, the tool re-encodes at different quality levels, and downscales if needed, to approach the KB size you set, then reports the result.
What happens to transparency when I output JPG?
JPG has no transparency, so transparent areas are filled with the background color you choose. PNG and WebP keep transparency.
Does it strip EXIF and other metadata?
Yes. Re-encoding through the canvas strips EXIF, GPS, and color-profile metadata. The result panel notes this.
Are images processed locally?
Yes. Compression runs entirely in your browser, so your images are never uploaded to a server.
Related image tools
Tools that pair well with Image Compressor.