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Reduce the file size of your images for free — output format always matches your input, so JPG stays JPG, PNG stays PNG, and WebP stays WebP. Transparency in PNG and WebP files is preserved after compression.
Use Quality mode to control compression with a slider and preview the result before downloading. Use Target Size mode to type an exact maximum file size in KB and let the tool find the optimal quality setting automatically. Accepts JPG, PNG, WebP and HEIC.
Ideal for web optimization, email attachments, social media uploads, and any situation where a platform enforces a file size limit.
Smaller images mean faster pages, lower storage costs, and fewer rejected uploads. Here is where compression matters most.
Images are the largest contributor to page weight on most websites. Compressing photos before uploading to a CMS, static site, or e-commerce platform reduces load time directly. Faster pages score better on Core Web Vitals, rank higher in Google Search, and keep visitors from leaving before the page finishes loading. WebP output cuts file size even further than JPG for modern browsers.
Marketplace platforms like Amazon, Etsy and eBay enforce strict file size and dimension limits on product images. Compress photos to meet platform requirements without re-shooting or losing the visual quality that converts browsers into buyers. Target Size mode lets you hit an exact KB limit in one step rather than trial-and-error with a quality slider.
Email clients and attachment size limits often reject photos directly from a camera or phone because modern cameras capture very large files. Compress a 5 MB photo down to under 1 MB before attaching it to an email, submitting it through an online form, or uploading it to a portal that blocks files above a certain size.
Quick answers about how this tool works and how to get the best results.
Switch to Target Size mode, type the maximum size you need in KB, and the tool automatically finds the best quality setting to hit that target. This is useful when an upload form, email provider, or platform enforces a strict file size limit. For general compression without a hard limit, Quality mode gives you a slider and an instant preview so you can balance sharpness against file size visually.
Yes. PictTools takes your privacy seriously. We do not store, sell, or share your images. Your files are processed securely and are not retained after your session ends.
Quality mode lets you control compression with a slider. Lower values produce smaller files and higher values preserve more detail. It is the right choice when you want visual control over the result. Target Size mode lets you type an exact file size in KB and the tool automatically finds the best quality setting to meet that goal. Use it when a platform or service has a strict file size limit.
The compressor always outputs in the same format as your input — JPG stays JPG, PNG stays PNG, and WebP stays WebP. HEIC photos are automatically converted to JPG. This means transparency is preserved when compressing PNG and WebP files. PNG compression is lossless, so the quality slider has less effect on file size than with JPG or WebP.
Results vary by image type and content. JPG photos can typically be reduced by 40 to 70% with little visible difference at quality settings around 75 to 85. WebP can achieve similar or greater savings. PNG compression is lossless so the quality slider has less impact — expect smaller gains compared to JPG. Images that are already heavily compressed will show the least improvement. The compressor always displays the exact savings percentage so you can compare before downloading.