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Compress JPG, PNG, and WebP images.
Nextooly’s Image Compressor is a fast, privacy-focused tool that reduces JPG, PNG, and WebP image file sizes directly in your browser — no uploads, no accounts, no server contact. Adjust output format (including WebP for best compression), set a target file size in KB, or manually control quality and dimensions.
EXIF metadata is stripped from compressed outputs via the Canvas API, keeping your images private. All processing happens locally on your device, making it ideal for compressing images for websites, emails, and social media without ever leaving your machine.
Image Compressor helps you complete image compressor offline workflows quickly with privacy-first processing. This tool belongs to Nextooly's Image & Media collection and is designed for fast results without unnecessary complexity.
Example
Input: The source text, file, or settings you want to work with.
Output: A clean image compressor result ready for the next step.
If Image Compressor is close but not quite the right fit, these related Nextooly tools cover adjacent image & media workflows without sending you to another service.
Best if you need to crop images with aspect ratios and freeform selection.
Best if you need to add text or logo watermarks to your images.
Best if you need to view EXIF and metadata for images.
Does this image compressor upload my pictures to any server?
No. All compression happens directly inside your browser using the Canvas API.
Can I compress multiple images at once?
Currently the tool processes one image at a time. After downloading, click 'Compress another' to process the next image.
How does quality affect the final image?
Lower quality reduces file size but may reduce clarity. PNG ignores the quality slider.
What happens if I set only width or only height?
The tool maintains aspect ratio automatically unless you disable it.
Why can PNG outputs be larger than JPEG?
PNG is lossless and typically produces larger files.
Is EXIF metadata removed during compression?
Yes. When the image is re-encoded through the Canvas API, EXIF metadata is stripped. Note: if the compressed output is unexpectedly larger than the original, the original file is returned unchanged and its EXIF may be retained.
What is the Target Size (KB) mode?
Target Size mode automatically finds the best quality and dimensions to hit your desired file size. It uses a smart binary search algorithm — no manual tweaking needed.
Why does the tool sometimes return the original file?
If the compressed version is larger than the original (common with already-optimized images or PNGs), the tool returns the original file to avoid making things worse. The result panel will show 'Already optimal'.
2026-03-10
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