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Compress JPEG, PNG, and WebP images in your browser. Reduce file size without visible quality loss.
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Compresses images with batch upload support, quality presets (low, medium, high, lossless), and format selection (JPEG, PNG, WebP, AVIF). Provides a before/after preview slider, shows size reduction percentage, adjusts max dimensions, and displays DPI information for each image.
Large images are the #1 cause of slow page loads, but finding the right compression-quality balance requires trial and error. This tool lets you visually compare compression results side by side while adjusting quality presets, making it easy to find the optimal trade-off for web performance.
This tool is part of the DevStackIO platform — a collection of free online developer tools from DevStackIO. Browse more free developer resources on DevStackIO.
Web developers optimizing page load speed, content authors uploading media to websites, and designers preparing assets for production deployment.
Drag and drop images or click to upload one or multiple files
Select the target output format: JPEG, PNG, WebP, or AVIF
Choose a quality preset: Low (smallest file), Medium, High, or Lossless
Set a max dimension in pixels to downscale images that exceed the limit
Use the before/after slider on any image to compare original vs compressed quality
Review the size reduction % and DPI info for each image; download individually or all as a zip
Input: 5MB JPEG photo with Medium quality preset and WebP format. Output: 320KB WebP, 94% reduction, before/after slider shows minimal quality loss.Input: 300 DPI PNG screenshot with max dimension set to 1920px. Output: Downscaled and compressed PNG at 1920px width, size reduced from 2MB to 400KB.What is AVIF and is it supported?
AVIF is a modern format with superior compression; supported in Chrome, Firefox, and Safari 16.4+.
Does batch processing preserve folder structure?
No, all images are downloaded flat or in a zip.
How is the reduction percentage calculated?
(Original size - Compressed size) / Original size * 100.
Can I keep EXIF data?
Currently compression strips EXIF to maximize reduction; use the image-resizer tool for EXIF control.
Authoritative specifications, standards, and in-depth reading for Image Compressor.
Click or drop images here
Supports JPEG, PNG, WebP · 100 files · 50MB total · 100% local
Convert images between PNG, JPEG, and WebP with a quality slider. See the final size before you download — 100% local
Resize images by width/height or percent. Use when dimensions must change; for smaller files use image-compressor. Input: image ≤10MB. Returns resized PNG/JPEG/WebP. 100% client-side, files never leave browser.
Crop images with aspect presets and free select. Use when trimming; for scaling use image-resizer. Input: image ≤10MB. Returns cropped PNG/JPEG. 100% client-side, files never leave browser.
Generate placeholder images by size and text. Use for mockups; for editing photos use image-resizer. Input: dimensions + options. Returns PNG download. 100% client-side, files never leave browser.
Add text or logo watermark to images. Use for branding; for cropping use image-cropper. Input: image ≤10MB. Returns watermarked image. 100% client-side, files never leave browser.
Embed raster images as SVG. Use when needing SVG wrappers; for optimizing vectors use svg-optimizer. Input: image ≤10MB. Returns SVG. 100% client-side, files never leave browser.
Combine images into a grid collage. Use for side-by-side; for animation use gif-maker. Input: images ≤10MB. Returns collage PNG. 100% client-side, files never leave browser.
Rotate images 90, 180, or 270 degrees and flip them horizontally or vertically. Preview and download — files never leave your browser
Learn the concepts behind this tool.
Image Compression
Image compression reduces file size by removing redundant or imperceptible data. Lossless keeps every pixel; lossy trades detail for much smaller files.
View in glossary →WebP
WebP is a modern image format from Google offering both lossy and lossless compression with smaller files than JPEG or PNG. It supports transparency and animation in one format.
View in glossary →PNG
Portable Network Graphics is a lossless raster format that preserves sharp edges and supports transparency. It is ideal for icons, screenshots, and graphics needing crisp detail.
View in glossary →JPEG
JPEG is a lossy raster format optimized for photographs using discrete cosine transform compression. Adjustable quality lets you balance fidelity against file size efficiently.
View in glossary →