Image Compressor - ForgeToolz
Compress images directly in your browser. No data leaves your device.
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Supports JPG, PNG, WEBP
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Free Batch Image Compressor OnlineCompress JPG, PNG and WebP Without Uploading
Compress images online directly in your browser. Free batch image compressor with no upload, no signup, and no watermarks. Convert to WebP, adjust quality, and resize dimensions instantly.
What This Batch Image Compressor Does
This free batch image compressor processes JPG, PNG, and WebP images using the browser built-in Canvas API. Compress a single image or select multiple files at once. Each image is processed locally with no data sent to any server at any point.
The quality slider controls how much compression is applied to JPG and WebP output. Lower quality means smaller files with more visible artifacts; higher quality means larger files with less compression. For most web use, 75 to 85 percent quality reduces file size by 60 to 80 percent without noticeable visual degradation.
The dimension controls let you set a maximum width or height in pixels. The compressor scales each image proportionally to fit within those bounds while preserving the original aspect ratio. Useful for resizing oversized photos before web upload, email, or social media.
Who This Tool Is For
Web Developers
Need to compress JPG online before deploying to production? This tool reduces image weight for faster page loads and better Core Web Vitals without leaving the browser.
Graphic Designers
Looking for a PNG compressor free of watermarks and server uploads? Compress design assets, icons, and graphics locally with full control over output quality and format.
Website Owners
Want a WebP converter online to modernize your site images? Convert JPG and PNG to WebP and reduce image weight by up to 35 percent compared to JPG at the same visual quality.
Photographers
Need an image compressor with no upload to protect client photos? Everything processes locally in the browser. Nothing leaves your device at any point.
E-commerce Sellers
Batch compress product photos before uploading to your store. Smaller images mean faster product pages, lower bandwidth costs, and better mobile performance.
General Use
Compress family photos for email, shrink screenshots before sharing, or reduce image sizes for online uploads. Free with no account, no limits, no watermark.
What You Can Do with This Tool
Batch Compression
Select or drag multiple JPG, PNG, or WebP files. The tool compresses each one with your chosen quality and dimension settings and shows before and after file size for every image. Download individually or all at once.
Free WebP Converter
Convert JPG or PNG to WebP format directly in the browser. WebP produces files 25 to 35 percent smaller than JPG at equivalent visual quality, making it the preferred format for web images.
Quality Control
The quality slider sets compression level for JPG and WebP output from 1 to 100 percent. PNG is lossless and not affected by the quality slider. Reducing PNG file size requires converting to JPG or WebP.
Dimension Resize
Set a maximum width or height in pixels. The compressor scales images proportionally to fit within those bounds. The original aspect ratio is always preserved. Perfect for resizing before platform upload.
No Upload Required
Images are processed using the browser Canvas API entirely on your device. No image data is sent to any server. Nothing is logged, stored, or accessible to anyone other than you.
Free, No Account
No signup, no subscription, no watermark on output files. Free for personal and commercial use with no daily limits or usage restrictions.
Why Image Compression Matters
Page Load Speed and SEO
Page speed is a confirmed ranking factor in Google Search. Uncompressed images are one of the most common causes of slow load times. Google PageSpeed Insights flags large images as a primary optimization opportunity, and Core Web Vitals metrics including Largest Contentful Paint are directly affected by image file size.
Bandwidth and Storage
Serving uncompressed images increases bandwidth consumption for every page load. For high-traffic sites this translates directly to hosting costs. Locally, large uncompressed photo libraries consume unnecessary storage on devices and cloud services.
Email and File Transfer
Most email services impose attachment size limits of 10 to 25MB. A batch of uncompressed photos from a modern smartphone camera can easily exceed these limits. Compressing before sending removes this barrier without any visible quality difference to recipients.
Platform Upload Requirements
Social media platforms, e-commerce sites, and content management systems often impose file size or dimension limits. Many platforms also re-compress uploaded images automatically, which reduces quality. Compressing before upload gives you full control over the final output.
JPG, PNG, and WebP: Which Format to Use
JPG
JPG uses lossy compression, meaning some image data is permanently discarded to reduce file size. Best suited for photographs and images with smooth color gradients. The quality slider controls how much data is discarded. JPG does not support transparency.
PNG
PNG uses lossless compression, meaning no image data is discarded. PNG files are larger than JPG but preserve every pixel exactly. PNG supports transparency, making it the correct format for logos, icons, and graphics that need to display on different backgrounds. Compressing a PNG converts it to JPG or WebP since there is no lossy PNG compression.
WebP
WebP was developed by Google and supports both lossy and lossless compression. For photographs, WebP typically produces files 25 to 35 percent smaller than JPG at equivalent perceptual quality. WebP also supports transparency like PNG. All major browsers have supported WebP since 2020. For web use, WebP is the preferred format when file size matters.
Frequently Asked Questions About Image Compression
How much can I compress an image without losing quality?
For JPG, a quality setting of 75 to 85 percent typically reduces file size by 60 to 80 percent with no visible quality difference. WebP achieves 25 to 35 percent smaller files than JPG at equivalent quality. PNG is lossless so reducing its file size requires converting to JPG or WebP.
Are my images private when using this tool?
Yes. Images are processed locally using the browser Canvas API. No image data is sent to any server. Nothing is uploaded, stored, or logged anywhere.
Can I compress multiple images at once?
Yes. Select or drag multiple files and the tool processes each one with your chosen settings. Download compressed files individually or all at once.
Why should I convert images to WebP?
WebP produces files 25 to 35 percent smaller than JPG at equivalent quality and is recommended by Google PageSpeed Insights for web images. See the format comparison section above for a full breakdown of JPG, PNG, and WebP differences.
Does compressing images help with SEO?
Yes. Page speed is a confirmed ranking factor. Uncompressed images are one of the most common causes of slow load times, which directly affects Core Web Vitals scores and search rankings.
What quality setting should I use for web images?
75 to 85 percent works for most web use. Compare the compressed output against the original visually before deciding. The right setting depends on the specific image content.
Is there a file size limit?
No limit is imposed by the tool. Practical limits depend on your device available memory since processing happens locally. Most devices handle files up to 20 to 30MB without issue.
Can I use this for commercial projects?
Yes. Free for personal and commercial use with no restrictions, no watermarks, and no attribution required.
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