Free Online Image Compressor - Reduce Photo File Size
Easily compress images to reduce photo file sizes by quality percentage or target size. Select your images, adjust the quality slider, or enter a target size in KB to compress them to your exact required limits. Ideal for passport, visa, or job application forms with strict upload constraints. Supported formats: JPG, PNG, WebP, AVIF, HEIC, HEIF. Batch compress multiple images at once. Specially designed for phone screens, it works perfectly on mobile. Free, secure, and no ads.
Step 1: Choose Images
Compress images entirely in your browser. No server uploads. Your files stay on your device, keeping your data private.
Image compression does not change image dimensions. If you need to scale down the image size proportionally (which reduces both resolution and file size), please use Image Resizer. If you need to crop the image to a specific size, please use Image Cropper. To change the file format (JPG, PNG, or WebP), please use Image Converter.
Frequently Asked Questions
Why should I compress images?
Some websites require smaller image files, such as visa application portals, job forms, profile systems, and other submission pages with strict size limits. Pixabc.com helps you compress images quickly for those requirements, and it is also useful for website owners who want faster pages, lower bandwidth usage, and a better experience on blogs, documentation sites, and ecommerce storefronts. If you also need to adjust image dimensions or crop photos to fit specific site layouts, we recommend using our Image Resizer or Image Cropper before compressing.
How does this tool protect my privacy?
All image and video processing runs locally within your web browser. Your files are never sent to a server, ensuring complete privacy and data security.
Why does image processing run directly in the browser?
Modern web browsers include built-in media decoding, canvas rendering, and file export capabilities. By utilizing these browser-native APIs, the tools process your files directly on your device, ensuring speed, security, and zero server usage.
Do I need to install any software or plugins?
No. All tools are fully web-based and execute directly in your browser. You can crop, compress, resize, or extract video frames without installing any applications or extensions.
Can I compress multiple images at once (batch mode)?
Yes. Pixabc.com supports batch image compression so you can compress multiple images in one run. Batch mode includes limits such as maximum images per batch and per-file size limits, and when processing is finished you can download compressed images as a ZIP file.
How much can I reduce image file size?
The compression ratio depends on image content, format, dimensions, and current quality level. Pixabc.com shows the compressed result before download so you can compare file size and visual quality, but exact savings vary from image to image. If you need a more significant file size reduction, you can also try lowering the resolution with our Image Resizer or cutting out unnecessary margins using the Image Cropper.
How do I set a target file size for compression?
On Pixabc.com, switch to target-size mode, enter your desired output size in KB, and run compression. The tool will try to reach your target while preserving acceptable quality, but very small targets may be impossible for some images due to format and content constraints.
Why does my image not get much smaller after compression?
Some files are already heavily optimized, and some formats or image contents have limited room for further compression. Pixabc.com can still try different compression settings, but detailed photos, noise-heavy images, and certain formats may not shrink much without visible quality loss.
What compression algorithm does this tool use?
The compression algorithm depends on the selected output format and mode. Pixabc.com uses jsquash-based encoders in non-fast mode, aligned with the same algorithm family used by Squoosh, while Fast Mode prioritizes speed with browser-native encoding paths.
What is Fast Mode, and when should I use it?
On Pixabc.com, Fast Mode is designed for quick turnaround and is useful when you need results fast, such as large batches or time-sensitive tasks. Use it when speed matters more than squeezing the absolute smallest file size.
When should I use non-fast (high-quality) mode?
On Pixabc.com, use non-fast mode when quality control and compression precision matter most, for example for product photos, marketing visuals, or image assets that need cleaner details at smaller sizes.
Why is there no quality slider when output format is PNG?
PNG is a lossless format, so it does not use a typical visual quality slider like JPEG or WebP. Pixabc.com adjusts the available controls by output format because PNG compression focuses on encoding efficiency rather than lossy quality reduction.
How does image compression improve website speed and SEO?
Smaller image files transfer faster, which can improve page loading performance and user experience. Pixabc.com helps website owners create lighter images for blogs, Shopify storefronts, ecommerce product pages, and other online stores, and better performance can support SEO outcomes indirectly by improving speed-related signals and reducing bandwidth overhead. To achieve the best web performance, you can also combine compression with our Image Resizer to set proper dimensions and Image Cropper to maintain consistent aspect ratios.
Can I compare the original and compressed image before downloading?
Yes. Pixabc.com lets you preview the result before download. On desktop, the magnifier helps compare the original and compressed image in both single-image and batch results, and single-image mode also supports quick switching between the original and compressed preview.
How can I use this tool on iPhone or Android devices?
Open the website in any modern mobile browser on iOS or Android (such as Safari or Chrome). You can perform all core actions like compression, cropping, resizing, and video extraction directly on your phone and save the results to your local storage.