Resize Images Online Free — Exact Pixels, No Upload
10+ platform presets (Instagram, YouTube, Amazon, Taobao) plus custom width & height. Scale or center-crop in your browser — images never leave your device.
Read more →Tips, comparisons, and best practices for optimizing your images
10+ platform presets (Instagram, YouTube, Amazon, Taobao) plus custom width & height. Scale or center-crop in your browser — images never leave your device.
Read more →Square posts, Stories, Reels, profile pictures — the exact pixel dimensions Instagram requires in 2026, with a one-click resize tool.
Read more →The recommended YouTube thumbnail size is 1280×720 (16:9), max 2 MB. Learn all display sizes and resize your thumbnail for free in seconds.
Read more →Blurry images after compression is one of the most common complaints. We break down 5 root causes — over-compression, wrong format, double-compression — and how to fix each.
Read more →Slow product images kill conversions. Learn the exact size specs for every major platform, how to compress without losing quality, and a repeatable 5-step workflow.
Read more →iPhones shoot HEIC by default — great for storage, terrible for sharing. Learn how to compress and convert HEIC images in your browser for free, with no upload required.
Read more →We surveyed every image-compression Chrome extension. Most upload your photos. Most are just popup wrappers. Here's what we built differently — right-click compress, page batch, upload helper, HEIC, 6 languages.
Read more →A clear, jargon-free explainer on lossy vs lossless compression, how JPEG and PNG algorithms work, and which type to use for every scenario.
Read more →We ran 20 images through the 5 most popular free compressors and measured ratio, speed, privacy, and batch support. Find out which tool wins for your use case.
Read more →Platform-by-platform image dimension and file size guide for 2026. Learn why social platforms re-compress your images and how to upload for the best quality.
Read more →From browser tools to CLI commands — the fastest ways to compress 10, 100, or 10,000 images at once. Covers ImgMin, Mac Preview, ImageMagick, Sharp, and CI/CD pipelines.
Read more →Most online compressors send your images to external servers. Learn which images are too sensitive to upload, how to verify a tool is local-only, and GDPR implications.
Read more →AVIF compresses 40–50% better than JPEG — but WebP has near-universal support. A detailed comparison of compression ratios, encoding speed, browser support, and implementation strategy.
Read more →Images cause 50%+ of page weight. Learn how to choose formats, hit Core Web Vitals targets, set correct dimensions, and implement lazy loading for your website.
Read more →Learn the exact attachment size limits for Gmail, Outlook, and email marketing platforms — and how to compress images for email in seconds without losing quality.
Read more →Images account for 50% of average page weight. Learn how proper image optimization improves Core Web Vitals, page speed, and search rankings.
Read more →A data-driven comparison of the three most popular image formats. We tested 50 images across all formats to find the best choice for every use case.
Read more →Learn the science behind image compression and discover practical techniques to reduce file sizes by 60-80% while keeping images visually identical to the originals.
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