Premium Image Tools
Convert, compress, resize, and watermark images instantly. All processing is done in your browser for 100% privacy and blazing speed. Choose a tool to get started.
Change image formats with ease. Convert to PNG, JPG, WEBP, AVIF, PDF, and more. Batch conversion supported.
Drastically reduce JPG & WEBP file sizes with a live before/after preview and a target size feature.
Resize images by pixels or percentage. Maintain aspect ratio and use presets for social media.
Add a custom text or logo watermark to your images. Control position, size, and transparency.
Unlike other online image converters that upload your photos to remote servers, ImgCon processes everything directly in your browser. This means your personal photos, documents, and creative work never leave your device. It is the most secure way to convert and compress images online, guaranteeing zero data breaches.
By utilizing advanced WebAssembly technology, ImgCon delivers desktop-class performance in a web app. Batch process hundreds of images in seconds without waiting for slow uploads or downloads. Whether you are converting JPG to PNG or resizing a batch of photos for Instagram, the speed is instant.
ImgCon is a Progressive Web App (PWA). You can install it on your phone, tablet, or desktop and use it even without an internet connection. It's like having lightweight software like Photoshop or Lightroom right in your browser, but completely free.
We support all modern web formats. Convert your images to WebP and AVIF for superior compression on websites, or stick to classic formats like JPG and PNG for compatibility. We even support converting images to PDF documents seamlessly.
No! ImgCon is completely unlimited. You can batch process as many images as your device's memory can handle.
Use our Image Compressor tool. It uses smart lossy compression techniques to reduce the file size of your JPG and WebP files by selectively decreasing the number of colors in the image, requiring fewer bytes to store data. The effect is nearly invisible but it makes a very large difference in file size!
Yes. Simply upload multiple images to the Watermark Tool, upload your logo or type your text, position it, and click Start. The watermark will be applied to all images in the same position automatically.
Sarah L.
Web Developer
"ImgCon is a lifesaver. I use it daily to optimize images for client websites. The fact that it's private and works offline is a huge plus. My go-to tool!"
Mike R.
Photographer
"I needed a quick way to convert my raw photos to JPG for previews without uploading them anywhere. ImgCon is incredibly fast and respects my privacy. Highly recommended!"
Jessica T.
Digital Marketer
"The batch processing feature is a game-changer for my social media campaigns. I can resize and compress dozens of images in seconds. And it's completely free!"
Learn more about image optimization and best practices.
Discover which format is best for your needs and how to choose wisely for web and print...
A practical guide to shrinking image file sizes to speed up your website and save space...
Learn about the next-gen image format from Google that offers superior compression and quality...
When it comes to saving images, two of the most popular file formats you'll encounter are PNG and JPG (or JPEG). While they may seem similar, they are fundamentally different and are best suited for different tasks. Understanding these differences is key to optimizing your images for both quality and file size, whether for the web or for print.
JPGs are the most common file format for digital photos. They use a method of "lossy" compression. This means that when the image is saved, some of the original image information is discarded to make the file size smaller. For most photographs, this loss is imperceptible to the human eye, but it allows for a significant reduction in file size.
PNGs were developed as a more powerful alternative to the older GIF format. They use "lossless" compression, which means no image data is lost when the file is saved. The file size is reduced by finding more efficient ways to represent the data without discarding it. This makes them perfect for images where clarity is crucial.
Choosing the right one can have a big impact on your image's quality and file size. Use JPG for your photos to keep your website loading fast. Use PNG for logos, graphics, and anything that needs sharp lines or a transparent background. ImgCon's Image Converter can help you easily switch between these formats to find the perfect balance for your needs.
Large image files are a major cause of slow-loading websites and can quickly eat up storage space. But how do you make them smaller without turning them into a pixelated mess? This guide will walk you through the best techniques for effective image compression.
As we covered in our PNG vs. JPG article, the type of compression matters. Lossy (like JPG) removes data to shrink files, which is great for photos but can create artifacts if overdone. Lossless (like PNG) reorganizes data without removing it, preserving perfect quality at the cost of a larger file size.
Before compressing, make sure your image is in the right format. A photograph saved as a PNG will be unnecessarily large. Convert it to JPG first using a tool like ImgCon. Conversely, a logo saved as a JPG may have fuzzy edges; converting it to PNG will keep it crisp.
ImgCon's Image Compressor gives you fine-tuned control. The quality slider allows you to find the "sweet spot" where the file size is low, but the quality is still high. For web images, a quality setting of 75-85% is often a great starting point. The live "before and after" preview is essential for seeing the impact of your changes in real-time. For ultimate control, you can even use the "Target File Size" feature to get the exact size you need.
Developed by Google, WebP is a modern image format that provides superior lossless and lossy compression for images on the web. Using WebP, webmasters and web developers can create smaller, richer images that make the web faster. On average, WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller than comparable JPEG images at equivalent SSIM quality index.
We explore the advantages of WebP over traditional formats and show you how easy it is to convert your images to WebP using ImgCon. It's the perfect way to speed up your website and improve user experience without sacrificing quality.
Photoshop is the undisputed king of image editing, but is it the best tool for quick, batch image compression? We put ImgCon to the test against Photoshop's "Save for Web" feature.
We took 20 high-resolution photographs and performed the same task: compress them to JPG at 80% quality. We measured the total time from starting the application to having the final images saved.
While Photoshop offers more granular control for individual images, for common web optimization tasks and batch processing, ImgCon provides a blazing-fast, browser-based experience with zero uploads. It's the ideal tool for developers and marketers who need to process images quickly and efficiently without the overhead of desktop software.
We worked with a popular travel blogger whose photo-heavy articles were suffering from slow load times, leading to a high bounce rate. The average page load time was 8.2 seconds, with the images on a single page totaling over 15 MB.
The blogger implemented a simple workflow using ImgCon's tools before uploading any new photos:
By implementing this two-step process, they were able to reduce their total image weight by over 70% without a noticeable drop in quality. The average image size went from 750 KB to just 180 KB. The result? The average page load time dropped from 8.2 seconds to 3.5 seconds. This dramatically improved their SEO rankings and user engagement, reducing their bounce rate by nearly 40%.