Free Online Image Tools
Compress, convert, resize, crop, and optimize images directly in your browser. Nothing uploads — your files stay on your device while every transformation runs locally using the Canvas API.
10 tools in this category · 100% free · No signup
All Image Tools
Image Compressor
Compress JPG/PNG/WebP images in your browser — no upload.
Open →Image to Base64
Convert any image file to a Base64 data URL.
Open →Base64 to Image
Decode a Base64 data URL back to an image file.
Open →Favicon Generator
Generate a multi-size favicon from any image.
Open →Image Resizer
Resize images to any dimensions in your browser.
Open →PNG to JPG Converter
Convert PNG images to JPG with adjustable quality.
Open →JPG to PNG Converter
Convert JPG images to lossless PNG.
Open →WebP Converter
Convert images to or from WebP format.
Open →SVG Optimizer
Optimize SVG markup — strip metadata, minify paths.
Open →Image Cropper
Crop images precisely in your browser.
Open →Why browser-based image processing matters
Most online image tools upload your files to a server, process them, and send them back. That's three risks: bandwidth waste, potential data leakage (especially for screenshots containing UI text or photos with metadata), and slower roundtrips. Modern browsers can compress, resize, crop, and convert images entirely in JavaScript using HTML5 Canvas — typically faster than uploading to a server, and verifiably private because the file never crosses the network.
Image optimization and Core Web Vitals
Largest Contentful Paint (LCP) — usually the hero image on a page — is one of Google's three Core Web Vitals ranking signals. Compressing images to under 100KB and serving them in WebP format can shave seconds off LCP. The Image Compressor and WebP Converter on this page handle exactly that. For automatic optimization in production, also configure your CDN (Cloudflare, BunnyCDN) or use Next.js's <Image> component, which serves WebP and resizes per device.
When to use each tool
Use Image Compressor when file size matters more than perfect fidelity (web hero, blog posts, social posts). Use Image Resizer when you need exact pixel dimensions (avatars, banners, thumbnails). Use PNG-to-JPG to drop transparency for smaller files when transparency isn't needed. Use WebP Converter when serving modern browsers — 25-35% smaller than equivalent JPG. Use Favicon Generator once per site to produce every favicon size browsers and iOS/Android expect.