SMALL.IM
Powerful Bulk Image Compression Tool
DRAG & DROP
Click to select or drop files
Powerful Image Processing Features
Everything you need to optimize your images for web and print
Smart Compression
Advanced algorithms reduce file size by up to 90% while maintaining visual quality. Perfect for web optimization and faster loading times.
Format Conversion
Convert between JPG, PNG, WebP, AVIF, and GIF formats. Modernize your images with next-generation formats for better performance.
Batch Processing
Process hundreds of images simultaneously. Save time with bulk operations for resize, compress, and convert tasks.
Image Resizing
Resize images by width, height, or percentage. Smart cropping and aspect ratio preservation ensure perfect results every time.
Privacy First
All processing happens locally in your browser. Your images never leave your device, ensuring complete privacy and security.
No Limits
No file size limits, no upload restrictions, no watermarks. Use our tool as much as you need, completely free forever.
Why Developers Trust Small.im
Built on proven open-source compression engines with a privacy-first architecture — the reliable choice for image optimization at scale.
100% In-Browser Processing
Every compression and conversion runs locally via WebAssembly and Web Workers. Your photos never leave your device — privacy guaranteed by design, not by policy.
Best-in-Class Compression Engines
Powered by MozJPEG, OxiPNG, libwebp, and libavif — the same proven libraries used across the industry. Achieve up to 90% smaller files with virtually lossless visual quality.
Instant Bulk Processing
Process hundreds of JPG, PNG, WebP, AVIF, and GIF files in parallel. No upload queue, no daily limits, no waiting — your CPU is the only ceiling.
Open Source & Auditable
Released under the MIT license on GitHub. Inspect the source, self-host the stack, or contribute improvements — trusted by developers, designers, and teams worldwide.
Built for Every Image Workflow
From a single screenshot to an entire product catalog, Small.im scales with your needs.
Web Performance & Core Web Vitals
Shrink hero images and page assets to boost LCP scores, improve PageSpeed Insights ratings, and rank higher in Google search results.
Content Creators & Bloggers
Compress screenshots, photos, and illustrations before publishing. Faster-loading articles, lower bandwidth bills, and a smoother reading experience.
E-Commerce Product Images
Batch convert product photos to WebP, resize to consistent dimensions, and strip metadata in a single drag-and-drop pass.
Designers & Marketing Teams
Prepare crisp images for landing pages, email campaigns, and social media — keep the visual polish while cutting file size dramatically.
Small.im Image Compression FAQ
General Questions
Q: What is Small.im?
Small.im is an open-source batch image compression tool that supports multiple image formats. The source code is available at https://github.com/airyland/pic-smaller, distributed under the MIT license.
Q: What image formats does Small.im support?
Small.im supports multiple formats including JPEG, WEBP, PNG, GIF, and AVIF.
Q: Is it safe to use Small.im for processing my images?
Yes, it's completely safe. All image compression and conversion processes are executed locally in your browser. Your images are not uploaded to any server, ensuring your data privacy and security.
How to Use
Q: How do I upload images to Small.im?
You can upload images by clicking the upload area to select files, or by dragging and dropping files and folders into the upload area.
Q: Can I add multiple images at once?
Yes, you can batch add images or add entire folders at once.
Q: How do I compare original and compressed images?
Use the preview feature where you can drag the divider to compare the original image (left side) with the compressed image (right side).
Ready to Optimize Your Images?
Join thousands of developers, designers, and content teams who rely on Small.im for fast, private, bulk image compression and format conversion.
Compress PNG, JPEG, WebP, AVIF, and GIF files, convert between formats, and resize in bulk — all in your browser, with no uploads, no signup, and no daily limits.