Resize your image size to 350 kB. Supports JPG, PNG, and WebP image formats.
Your files never leave your device. All compression happens locally in your browser.
Compressing images to 350 kB with MB2kB takes just a few steps. Here is how it works.
Drag and drop your image into the upload area above, or click to browse files from your device. MB2kB supports JPG, PNG, and WebP formats.
The target size is already set to 350 kB for this page. You can adjust it if needed by entering a different number.
Click the Compress button and wait a moment. The tool processes your image right inside your browser, so nothing gets uploaded to any server. Once it is done, compare the before and after results, then click Download to save the compressed image.
350 kB gives you noticeably more quality headroom than smaller sizes, making it the right choice when visual detail matters and you still need to stay within a file size limit.
Portfolio and photography uploads are where 350 kB really shines. If you are a photographer or designer sharing your work online, 350 kB lets you show sharp, detailed images without the aggressive compression that would flatten textures or muddy colors. Viewers looking at your portfolio on a desktop or large screen will see your work as intended.
Detailed product shots for premium listings are another great use case. When you need to show fabric texture, fine craftsmanship, or intricate detail in a product image, the extra file size budget at 350 kB preserves those details much better than 200 or 250 kB would.
High quality web images for hero sections and feature areas of websites also benefit from this size. A 350 kB hero image will look crisp on retina displays and large monitors without making the page load noticeably slower. If you want to go smaller without sacrificing too much, 300 kB is a close alternative. If you need a significantly smaller size, 200 kB is a big step down that works well for simpler images.
At 350 kB, you have enough budget to work with larger image dimensions without visibly hurting quality. Images up to 1600x1200 pixels generally compress well to this size for photographs with natural color gradients. If your image has lots of fine detail or sharp edges, you might get cleaner results keeping dimensions at 1200x900 or smaller.
For portfolio images, JPG format is almost always the better choice since it handles photographic content more efficiently. If you are working with graphics that have text, logos, or flat colors, PNG will give you sharper results. WebP is also a great option if your target platform supports it.
mb2kb is an online Image Compressor tool that allows you to compress image files to a specific size with ease. It’s ideal for optimizing images for web, emails, or online forms.
Yes, mb2kb is a completely free tool. There are no usage limitations it.
No, mb2kb is a web-based Image Compressor. The image is compressed right inside your web browser.
Upload the image you want to compress, choose the desired size, and click the “Compress” button. Your compressed image will be ready for download within seconds.
We currently support compressing images in JPEG, PNG and WebP formats.
We don’t upload any images to our server for processing. The entire compression happens locally inside your web browser. Your images never leave your device.
We don’t upload any images to our server. All processing happens locally and we don’t store any image data.
For online portfolios, 350 kB provides very good quality that showcases your work effectively. Viewers looking at your portfolio on screens will see sharp, detailed images with minimal compression artifacts. For print purposes, you would want higher resolution originals, but for web display, 350 kB is more than sufficient.
Choose 350 kB when you need good quality but also care about load times, storage, or upload limits. If you are building a website, uploading to a gallery, or sending images by email, 350 kB gives you high quality without the bulk. If the image is for printing or archival purposes, you should keep the original higher resolution file.
The difference is subtle and depends on the image content. For photos with smooth gradients (like skies or skin tones), 350 kB will show slightly smoother transitions. For photos with lots of sharp edges and text, both sizes will look nearly identical. In most cases, you would need to zoom in closely to spot any difference between the two.