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Reduce the file size of your images by up to 90% without noticeable quality loss.
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This tool lets you compress image online free directly inside your browser. Drop in any JPG, PNG, WebP, AVIF, or GIF file and the compressor reduces its file size using your device's own processing power. The quality slider gives you full control over the balance between visual fidelity and file size — at the default 80% setting most images lose over half their weight with no visible difference to the naked eye.
Because every byte is processed locally through the Canvas API and WebAssembly, your files are never uploaded to a server. That means zero privacy risk, zero waiting for network transfers, and zero daily limits. You can compress image online free as many times as you need — single files or entire batches — then download each result individually or grab everything as a ZIP. The tool works on any modern browser across desktop, tablet, and mobile devices.
Email providers like Gmail cap attachments at 25 MB — compressing a batch of holiday photos before sending saves you from hitting that limit. Web developers routinely compress image online free to hit performance budgets; a product page with 20 unoptimized hero shots can add seconds to load time and hurt Core Web Vitals scores. Bloggers and content creators shrink featured images before uploading to WordPress or Ghost so pages stay fast without a CDN image pipeline. E-commerce sellers compress product photos to meet marketplace size requirements on Amazon, Etsy, or Shopify. Students and job applicants reduce scanned document sizes before attaching them to online forms that enforce strict upload limits.
Does compression reduce image quality?
At the default 80% quality setting, the difference is virtually invisible to the human eye. The compressor removes redundant data and optimizes encoding rather than stripping visible detail. You can preview the result before downloading and adjust the slider if you want tighter or looser compression.
What file formats are supported?
The compressor accepts JPG, JPEG, PNG, WebP, AVIF, GIF, and BMP files. Output format matches the input by default, so a PNG stays a PNG. If you need to change formats, use the dedicated converter tools on this site.
Is there a file size or count limit?
There is no hard limit on file size or the number of images you can process. Very large files over 50 MB may take a few extra seconds depending on your device's CPU and available memory. Processing happens entirely on your hardware.
Are my images uploaded to a server?
No. Every step — reading the file, compressing pixels, and generating the download — runs inside your browser tab. No data leaves your device at any point. You can verify this by disconnecting from the internet and using the tool offline.
Can I compress multiple images at once?
Yes. Select as many files as you need in the file picker or drag an entire folder into the upload zone. Each image is compressed in parallel, and you can download all results as a single ZIP archive when processing is complete.
Need to change formats instead? Try the WebP Converter for next-gen compression, or Resize Image to scale dimensions before compressing. You can also convert between JPG and PNG if you need transparency support.