Reduce image size by smart scaling and optimization.
Sign up for free to unlock advanced features like target file size, progressive JPEG, WEBP format, and save all your compressed files in My Orders for easy access later.
JPG, PNG, WebP, HEIC, TIFF • Max 20MB each • Up to 20 files
Large image files slow down websites, bounce emails, and fail upload limits. ConvertMastery Image Compressor reduces file size while keeping your photos sharp. Set a target file size, use smart presets, resize by percentage or pixels, and strip metadata—all in your browser.
Free Online Image Compressor is designed for everyday tasks where speed and simplicity matter. Whether you are handling a single file or working through a batch, ConvertMastery keeps the workflow straightforward with clear settings and instant downloads.
Shrink photos for email attachments under provider size limits. Optimize images for faster page load and better Core Web Vitals. Compress ID scans and documents for online form uploads. Prepare social media images within platform file-size caps. These are among the most common reasons users choose this tool on ConvertMastery.
For the best outcome, start with a high-quality source file when possible. If you are preparing images for the web, consider converting to WebP or compressing after conversion. For documents, review the output before deleting originals. When privacy matters, prefer settings that strip metadata and use browser-based processing when available.
ConvertMastery is updated regularly to support modern formats and browsers. If you need help, visit our documentation guide or browse related tools linked below. Free account sign-up unlocks advanced options and My Orders for saving results.
JPG, JPEG, PNG, WebP. Batch compression supported with per-file settings.
ConvertMastery processes files locally in your browser whenever possible. Your images, documents, and media are not uploaded to our servers for conversion or compression. This privacy-first approach keeps your data on your device and reduces exposure to third parties.
Results vary by image content. Photos often shrink 40–80% with minimal visible loss at balanced settings.
Yes. Use target file size mode or our dedicated compress-to-100kb and compress-to-200kb landing pages.
You can enable metadata stripping to reduce size and protect location data.
Yes. Process multiple images and download as a ZIP.