Local image compressor
Aim for lighter JPG, PNG, WebP and BMP files for blogs, forms, online stores and email. Adjust output format, quality and dimensions locally in your browser without uploading images to a server.
Choose WebP or JPG, lower quality, resize oversized files and check the output size before downloading.
Compress images online
Select one or more JPG, PNG, WebP or BMP images. Niva Tools will optimize them locally in your browser.
No images selectedHow it works
Clear limits
Creator workflows
Recommended settings
For SEO-focused pages, product grids and blog posts, WebP at 70-85% quality is usually a strong starting point. Use JPG when compatibility matters most and PNG when you need lossless output or transparency.
If an image is much larger than its display size, set a maximum width or height before compression. Smaller dimensions often reduce file size more than quality changes alone.
Under 500 KB workflow
Honest target sizes
A simple photo can often become much smaller than a detailed graphic, screenshot or transparent PNG. File size depends on pixel dimensions, visual detail, format, quality and whether the image needs transparency.
If a file does not reach 500 KB, reduce the dimensions first, switch from PNG to WebP or JPG when possible, then run the compression again with a lower quality setting. For the full workflow, read the image compression guide.
Related tools
Image Compressor works naturally with the visual tools inside Niva Tools.
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Open tool →FAQ
Yes. You can aim for an image under 500 KB by choosing WebP or JPG, lowering quality and resizing large dimensions. The exact result depends on the original image, format, dimensions and visual detail.
Load the JPG in Image Compressor, choose WebP or JPG output, lower the quality slider and set a smaller maximum width or height. The file is processed locally in your browser.
PNG is lossless and can stay large, especially for detailed images. To reduce file size, export as WebP or JPG when transparency is not required, or resize the image before exporting.
Yes. The compression workflow runs locally in your browser for this tool. Images are not uploaded to NivaTools servers and are not stored in an account.
Yes, when the image includes areas you do not need. Cropping first reduces dimensions and can make it easier to reach lighter file sizes before compression.
For many blog and SEO images, WebP at 70 to 85 percent quality with practical display dimensions is a strong starting point. Use JPG for compatibility and PNG only when lossless output or transparency matters.
