Tooooolbox
100% private — no upload
Page speed is a Google ranking factor. Heavy images are the #1 cause of slow websites. Drop your photos below, select the 'Web' preset (WebP, 1920px, 75% quality) and get web-ready images in seconds — without sharing them with any server.
PNG, JPG, GIF, WebP, HEIC up to 50MB per file
Choose filesOn a typical website images account for the majority of total page weight — far more than scripts, fonts or stylesheets. They are also usually the Largest Contentful Paint element, the specific metric Google measures to decide whether your page feels fast. Compressing them is the single highest-leverage speed optimisation available, and it requires no code changes.
The target worth aiming for is under 2.5 seconds to render the largest visible element. A 3MB hero photo cannot meet that on a mobile connection no matter how well the rest of the site is built; the same photo at 150KB comfortably can.
The most common mistake is uploading a 4000px photo into a slot that renders at 800px. The browser downloads every one of those pixels and then throws most of them away. As a rule, export at roughly twice the displayed width to stay sharp on high-density screens, and no more: 1600px for a full-width hero on most layouts, 800px for a half-width image, 400px for a thumbnail.
On format, WebP is the sensible default in 2026 — it is supported by every current browser and typically saves 25–35% over JPEG at matching quality. AVIF saves more again, around 50%, and is worth using for large hero images where the saving is biggest. Keep PNG only for graphics that genuinely need transparency or crisp flat colour.
WebP is the recommended format for web — it is 25–35% smaller than JPEG at the same quality and is supported by all modern browsers. AVIF is even smaller but encoding support is still limited. Use JPEG only as a fallback for older browsers.
1920px max width covers full-HD screens. For hero images where the browser stretches the image, 2400–2560px is safer. For thumbnails and card images, 800px or less is usually sufficient.
For image-heavy pages, switching from unoptimized JPEG to WebP at 1920px typically improves Largest Contentful Paint (LCP) by 0.5–2 seconds and can add 5–15 PageSpeed points.
Yes — always archive the full-resolution original. Web-compressed copies are for serving online; you will need the original if you ever want to resize or re-export at a different quality.