Image Compressor
Compress images by quality, percentage, or target file size.
7 free tools
Compress, resize, crop, convert, enhance, and edit images — all processed locally in your browser, no uploads.
Working with images should be simple and private. Our image tools let you compress photos to reduce file size, resize images for any platform, crop to perfect dimensions, convert between formats, enhance quality, strip metadata, and extract color palettes — all processed locally in your browser without uploading a single file.
Compress images by quality, percentage, or target file size.
Resize images by pixels, percentage, or social media presets with high-quality Pica algorithm.
Crop, rotate, flip, and zoom images with preset ratios.
Convert images between JPG, PNG, WebP, BMP, GIF, TIFF.
Enhance photo quality with brightness, contrast, saturation, sharpness, exposure, gamma, temperature, and vibrance controls. Auto enhance. 11 presets. Live histogram. Compare overlay. 100% private.
Strip EXIF data, GPS, camera info from photos.
Extract dominant colors from any image as HEX, RGB, HSL.
| Tool | Best For | Key Feature |
|---|---|---|
| Image Compressor | Compress images by quality, percentage, or target file size. | Compress by quality, percentage, or target file size |
| Image Resizer | Resize images by pixels, percentage, or social media presets with high-quality Pica algorithm. | Resize by pixels, percentage, width-only, or height-only |
| Image Cropper | Crop, rotate, flip, and zoom images with preset ratios. | Free crop, square, 16:9, 9:16, 4:3, 3:4, circle crop |
| Image Converter | Convert images between JPG, PNG, WebP, BMP, GIF, TIFF. | Convert between JPG, PNG, WebP, BMP, GIF, TIFF |
| Image Quality Enhancer | Enhance photo quality with brightness, contrast, saturation, sharpness, exposure, gamma, temperature, and vibrance controls. Auto enhance. 11 presets. Live histogram. Compare overlay. 100% private. | Brightness, contrast, exposure, gamma sliders |
| Remove Image Metadata | Strip EXIF data, GPS, camera info from photos. | Display all EXIF metadata |
| Color Palette Extractor | Extract dominant colors from any image as HEX, RGB, HSL. | Extract 8-10 dominant colors |
Image Tools gives you a complete browser-based image editing suite without requiring desktop software or uploading your photos to cloud services. Every tool processes images entirely in your browser using Canvas API, WebAssembly, and JavaScript libraries — your files never leave your device. The collection covers the full spectrum of common image tasks: compress photos to reduce file size for web, email, or storage; resize images to exact dimensions or percentages while maintaining quality; crop to free-form, square, common aspect ratios, or circles; convert between formats including JPG, PNG, WebP, BMP, GIF, and TIFF; enhance photos with brightness, contrast, saturation, and sharpness adjustments; strip EXIF metadata including GPS location, camera info, and device details; and extract dominant color palettes from images. Unlike free online alternatives that upload your photos to their servers, these tools guarantee complete privacy — every operation happens in your browser's memory. The compression engine supports target file sizes from 20KB to custom limits, the resizer includes presets for Instagram, YouTube, Facebook, and other platforms, and the cropper offers rotation, flipping, and zoom controls. Whether you are a photographer optimizing images for web publication, a social media manager preparing platform-specific graphics, a developer compressing assets for faster page loads, or anyone who needs quick image edits without installing software, these tools deliver professional results while keeping your photos completely private.
Images account for roughly 50% of total page weight on the average website. Unoptimized images slow down page loading, increase bandwidth costs, hurt search engine rankings, and frustrate visitors — especially on mobile connections. A single uncompressed photo from a modern smartphone can be 4–8 MB, which takes several seconds to load even on broadband. Multiply that by twenty images on a product page, and you have a site that takes 10+ seconds to fully render.
Optimized images load faster, which directly improves Core Web Vitals — Google's metrics for measuring real-world user experience. Sites that score well on Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) rank higher in search results. Beyond SEO, smaller image files mean lower hosting costs, faster email delivery, quicker social media uploads, and a smoother experience for every visitor.
Did you know?
Google recommends images under 200KB for optimal page speed. Our compression engine can reduce most photos by 60–80% while keeping them visually sharp.
Page speed is one of Google's ranking factors. Studies show that 53% of mobile users abandon a site that takes longer than 3 seconds to load. Optimized images are the single easiest way to improve load times without changing your site's design or functionality.
Fast-loading pages rank higher in Google Search. Image optimization also improves your chances of appearing in Google Image Search, which drives significant traffic for e-commerce, photography, and recipe websites. Properly formatted images with descriptive alt text help search engines understand your content better.
Compressed images take up less storage space on your device and upload faster to cloud services, social media platforms, and email. A 5MB photo compressed to 500KB uploads 10 times faster on the same connection.
Every social platform has specific image size requirements. Instagram prefers 1080×1080 for posts, YouTube thumbnails are 1280×720, and LinkedIn profile banners are 1584×396. Uploading incorrectly sized images leads to cropping, blurring, or awkward formatting. Resizing to the correct dimensions before uploading ensures your images look professional on every platform.
Every tool in this collection processes images entirely in your browser using JavaScript and the Canvas API. Your files are never uploaded to any server. This means your photos — including personal snapshots, confidential documents, and proprietary designs — stay completely private. There is no account required, no cloud storage involved, and no tracking of your images. Once you close the tab, all temporary data is automatically cleared from memory.
Image optimization is the process of reducing image file size without significantly degrading visual quality. The goal is to serve the smallest possible file that still looks good to the human eye. This involves choosing the right format, setting appropriate compression levels, resizing to the correct dimensions, and stripping unnecessary metadata.
Every byte of image data must be downloaded by the visitor's browser before it can be displayed. Large images consume more bandwidth, take longer to download, and delay the page from becoming interactive. For mobile users on cellular data, large images can quickly exhaust monthly data caps. For website owners, large images increase hosting costs and CDN bandwidth bills.
Lossy compression permanently removes some image data to reduce file size. JPEG and WebP use lossy compression. At moderate settings (70–85% quality), the visual difference is imperceptible to most people, but file sizes can drop by 60–80%. At extreme settings (below 30%), visible artifacts appear — blocky patterns, color banding, and blurred edges.
Lossless compression reduces file size without discarding any data. PNG uses lossless compression. The file becomes smaller, but when decompressed, every pixel is identical to the original. Lossless compression typically achieves 10–30% size reduction — much less than lossy, but perfect for images that require pixel-perfect accuracy like logos, diagrams, and screenshots with text.
Dimensions refer to the width and height of an image in pixels — for example, 1920×1080. Resolution typically refers to pixels per inch (PPI) or dots per inch (DPI), which matters primarily for print. A 72 DPI image displayed on screen looks the same as a 300 DPI image at the same pixel dimensions — the difference only appears when printing. For web use, focus on pixel dimensions, not DPI.
A pixel is the smallest unit of a digital image. A 1920×1080 image contains 1920 columns and 1080 rows of pixels — roughly 2 million pixels total (2 megapixels). More pixels mean more detail, but also larger file sizes. Modern smartphones capture 12–50 megapixels, which is far more than most screens can display. Resizing to match the display size eliminates this excess.
Quality in compressed images is measured on a subjective scale. JPEG quality ranges from 1 (worst) to 100 (best). Most viewers cannot distinguish between quality 80 and quality 100, but the file size difference can be 3–5x. The optimal quality setting depends on the image content: photos with complex textures tolerate lower quality better than images with smooth gradients or sharp text.
Cloud-based image tools upload your files to a remote server for processing. This introduces privacy risks (your images are temporarily stored on someone else's computer), latency (upload/download time), and potential bandwidth costs. Browser-based tools process images locally using your device's CPU and GPU. The result is instant processing, zero upload time, complete privacy, and no server costs. The trade-off is that very large images may be slower on older devices with limited memory.
Image metadata includes EXIF data (camera model, lens, ISO, shutter speed), GPS coordinates (where the photo was taken), timestamps, and software information. This data can reveal personal details — your location, your device model, and when you were somewhere. Stripping metadata before sharing photos publicly is a simple privacy practice. Metadata also adds 2–10% to file size, so removing it contributes to compression.
Choosing the right image format is the first step in optimization. Each format was designed for specific use cases, and using the wrong one can mean unnecessarily large files or missing features.
| Format | Best Use | Compression | Transparency | File Size | |
|---|---|---|---|---|---|
| JPEG | Photographs, web images, email | Lossy | No | Small | Good |
| PNG | Logos, screenshots, diagrams, text | Lossless | Yes (alpha) | Large | Excellent |
| WebP | Web pages, progressive loading | Lossy + Lossless | Yes (alpha) | Smallest | Good |
| GIF | Simple animations, tiny graphics | Lossless (limited) | Yes (1-bit) | Varies | Poor |
| BMP | Legacy systems, uncompressed storage | None | Yes | Very Large | Excellent |
| TIFF | Professional print, archival | Lossless / Lossy | Yes | Very Large | Excellent |
Use JPEG for photographs, complex scenes, and images with smooth color gradients. JPEG's lossy compression excels at reducing file sizes for photographic content because the human eye is less sensitive to the subtle data loss in complex textures. Use PNG when you need transparency, when the image contains sharp text or edges, or when pixel-perfect accuracy is required — like logos, screenshots, and diagrams.
WebP is the best choice for web images whenever browser support is acceptable. It produces 25–35% smaller files than JPEG at equivalent quality, supports both lossy and lossless modes, and includes alpha transparency like PNG. All modern browsers — Chrome, Firefox, Safari, Edge — support WebP. The main reason to avoid WebP is when you need maximum compatibility with older software or when sending images to systems that only accept JPEG or PNG.
Pro Tip
For most websites, use JPEG for photographs and PNG for graphics with transparency. If your audience uses modern browsers, WebP gives you the best of both worlds — smaller files with full transparency support.
Slow websites lose visitors and revenue. Compressing images before uploading to your CMS (WordPress, Shopify, Squarespace) can cut page load time in half. Resize hero images to match your theme's recommended dimensions, compress product photos to under 200KB, and use WebP for the best compression-to-quality ratio.
Blog images improve readability and engagement, but unoptimized images slow down your posts. Compress featured images and inline photos to keep page speed high. Resize images to match your blog's content width — typically 800–1200px wide — rather than uploading full-resolution camera exports.
Many assignment portals have strict file size limits — often 2–5 MB per upload. Compressing screenshots, scanned documents, and project images ensures they fit within limits. Removing metadata from photos submitted for academic projects protects your privacy.
Web galleries require optimized images that load quickly without sacrificing visual quality. Use Image Compressor to process images, resize to web-friendly dimensions (2000px on the long edge is sufficient for most screens), and strip EXIF data before publishing to protect your location and equipment details.
Designers need to convert between formats for different deliverables — PNG for transparent assets, JPEG for mockups, WebP for web prototypes. The color palette extractor helps identify exact brand colors from reference images. The crop and resize tools ensure assets fit specific layout grids.
Frontend developers optimize images as part of performance budgets. Batch compression reduces build-time image assets. Converting to WebP with JPEG fallback ensures modern browsers get smaller files while older browsers still see images. Removing metadata reduces file size for CDN delivery.
Product images directly impact conversion rates. High-quality photos build trust, but large files slow down product pages. Compress product images to 100–200KB each, resize to consistent dimensions (typically 1000×1000 or 1200×1200 for zoom functionality), and use JPEG for photographs with white backgrounds.
Each platform has specific requirements. Instagram compresses images aggressively, so upload at 1080px for best results. YouTube thumbnails need to be 1280×720. LinkedIn profile photos look best at 400×400. Resizing to the correct dimensions before uploading prevents platforms from applying their own (often worse) compression.
Professional presentations, proposals, and marketing materials need properly sized images. Compressing email attachments ensures they don't bounce due to size limits. Resizing images for print materials (business cards, flyers, brochures) at the correct DPI ensures sharp output.
Most email providers limit attachments to 25MB. A single uncompressed photo can be 8MB. Compressing images before attaching reduces file size dramatically, ensures delivery, and speeds up the recipient's download. JPEG at 80% quality typically produces files under 500KB for standard photos.
Many government portals and job application systems have strict file size and dimension requirements — often 200KB maximum and specific pixel dimensions. Resizing and compressing passport photos, ID scans, and resume headshots to meet these requirements prevents rejection and re-submission.
Best Practice
Always keep your original uncompressed files. Store them in a separate folder. You can always re-compress from the original, but you cannot recover quality from an already-compressed image.
Match the format to the content: JPEG for photographs, PNG for graphics with transparency or sharp text, WebP for web images when browser support allows. Do not use PNG for photographs — the lossless compression produces files 3–5x larger than JPEG with no visible quality benefit.
Every time you compress a lossy image, you lose more data. Compressing a JPEG that was already compressed at 80% quality produces worse results than compressing the original once at 80%. Always compress from the original source file, not from a previously compressed version.
Mobile screens are smaller, so images do not need to be as large. Serve images at 750–1000px wide for mobile users. Use responsive image techniques (srcset) to serve smaller images on mobile and larger images on desktop. Compress more aggressively for mobile — quality differences are less noticeable on small screens.
Remove EXIF metadata before sharing photos publicly. GPS coordinates embedded in photos can reveal your home address, workplace, and daily patterns. Camera serial numbers in metadata can be traced back to you. Our metadata remover strips all identifying information while preserving image quality.
Use descriptive alt text for every image on your website. Alt text helps screen readers describe images to visually impaired users and helps search engines understand image content. Avoid generic text like "image1.jpg" or "photo" — instead describe what the image shows: "Blue running shoes on white background."
Tip
Avoid these common mistakes to get better results from your image optimization workflow.
Not sure which tool to use? Find your goal below and click the recommended tool.
| I want to... | Recommended Tool | Examples |
|---|---|---|
| Reduce file size | Image Compressor | Photos for web, email attachments |
| Resize dimensions | Image Resizer | Social media posts, profile pictures |
| Convert PNG to JPG | Image Converter | Web optimization, compatibility |
| Remove EXIF data | Metadata Remover | Privacy protection, sharing photos |
| Extract colors | Color Palette Extractor | Brand matching, design inspiration |
| Crop image | Image Cropper | Remove edges, create squares, focus on subject |
Each platform has specific image size requirements. Uploading the correct dimensions ensures your images display crisply without unnecessary compression by the platform.
| Platform | Post/Image | Profile | Banner/Cover |
|---|---|---|---|
| 1080×1080 (square) | 320×320 | N/A | |
| 1200×630 | 170×170 | 820×312 | |
| 1200×627 | 400×400 | 1584×396 | |
| YouTube | 1280×720 (thumbnail) | 800×800 | 2560×1440 |
| X (Twitter) | 1600×900 | 400×400 | 1500×500 |
| 1000×1500 (2:3) | 165×165 | N/A | |
| 1200×1200 | 500×500 | N/A | |
| 600px wide max | N/A | 600×200 | |
| Website Hero | 1920×1080 | N/A | 1920×600 |
| Favicon | 32×32 or 16×16 | N/A | N/A |
Best Practice
For product images, use 1000×1000 to 1200×1200 pixels. This size supports zoom functionality on e-commerce platforms while keeping file sizes reasonable after compression.
Privacy Tip
Every image tool in this collection processes your files entirely in your browser. Your images never leave your device.
Optimized images directly improve your website's search engine rankings and user experience. Google uses page speed as a ranking factor, and images are typically the largest resource on any page.
Largest Contentful Paint (LCP) measures how long the main content takes to render. Unoptimized images are the most common cause of poor LCP. Compressing and properly sizing images can improve LCP by 1–3 seconds.
Cumulative Layout Shift (CLS) measures visual stability. Setting explicit width and height attributes on image elements prevents layout shifts during loading.
Mobile users often pay per megabyte of data. A page with 10MB of unoptimized images can exhaust a significant portion of a prepaid data plan. Optimized images reduce data consumption, improve loading on slow connections, and provide a better experience for the 60% of web traffic that comes from mobile devices.
Fast-loading pages rank higher in Google Search results. Google's algorithm considers page speed as a ranking signal, and their Core Web Vitals metrics directly measure image loading performance. Optimized images also appear in Google Image Search, driving additional organic traffic to your site.
| Feature | Browser Processing | Cloud Processing |
|---|---|---|
| Privacy | Files never leave your device | Files uploaded to remote server |
| Speed | Instant (no upload/download) | Depends on internet speed |
| Offline | Works after initial page load | Requires internet connection |
| Upload Limits | None (limited by device memory) | Server-imposed limits |
| Watermarks | None | Often added on free tier |
| Usage | Unlimited | Often rate-limited |
Did you know?
WebP images are typically 25–35% smaller than JPEG at the same quality level. All modern browsers support WebP.
Best Practice
Use 80% quality for photographs. The human eye cannot distinguish 80% from 100%, but the file size is 3–5x smaller.
Privacy Tip
EXIF data in photos can contain GPS coordinates showing exactly where the photo was taken. Always strip metadata before sharing publicly.
SEO Tip
Use descriptive filenames for images: blue-running-shoes.jpg is better than IMG_20250120.jpg for search engine understanding.
Pro Tip
For e-commerce, use 1000×1000 images to support zoom. Compress to 80–85% quality for fast loading without visible quality loss.
Warning
Never compress an already-compressed image. Each compression pass degrades quality further. Always start from the original.
Learn more about how we build and test our tools, or get in touch with questions.