ImageConv - Local Image Format Converter

Right-click to convert and download any image as PNG, JPG, WebP or AVIF. Quality control, clipboard copy, 100% local.

ImageConv — convert and compress images without leaving your browser Right-click any image on any website and save it as PNG, JPG, WEBP or AVIF, or copy it straight to the clipboard as PNG. Drop a local image — or a whole batch of them — into the popup to convert, resize and compress. Every conversion runs on your own machine with the browser's built-in canvas engine and bundled WASM encoders, so your files are never uploaded anywhere. No accounts, no queues, no server round trip: a typical image converts in well under a second, and it works offline. Convert PNG to JPG, JPG to WEBP, WEBP to PNG, anything to AVIF, or iPhone HEIC photos to JPG — without opening a single online converter. WHAT YOU CAN DO • Right-click any image → Save as PNG, JPG, WEBP or AVIF • Right-click → Copy as PNG, then paste into email, chat, Word or Figma • Drag and drop or paste (Ctrl+V) local images into the popup • Convert several local files in one run, with per-file progress and results • Export every image on a page at once (see below) • Resize by percentage (5–200%) or exact pixel dimensions, keeping the aspect ratio • Adjustable export quality per format for JPG, WEBP and AVIF; PNG stays lossless • Size comparison for every image — original versus converted, with the percentage saved, plus a total for the whole run • Cross-origin images work: ImageConv fetches the original file even when a page blocks right-click download • Smart link cleaning strips CDN resize and tracking parameters so you get the real source image instead of a resized thumbnail • HEIC/HEIF support: decode iPhone photos locally, no third-party converter needed • Transparent PNGs exported to JPG get a clean white background instead of black • SVG files are rasterized at their natural size • Animated sources are detected, with a note that only the first frame is kept • AVIF comes from a built-in encoder; images over 25 megapixels automatically fall back to WEBP BATCH EXPORT A PAGE Open the popup on any page and choose "Batch export images on this page". ImageConv lists every image already loaded — largest first — with its real dimensions and file size. • Filter out icons and avatars: images under 100 px are hidden by default (200 px and 400 px filters are also available) • Sort by size or by page order, select all, invert the selection, or tick images one by one • Export up to 100 images in a single run, with live progress and a Cancel button • Images you failed to convert stay selected, so one more click retries them FREE AND PRO Free: right-click save and copy, single local files plus up to 5 files per run, and page batch export of up to 5 images. Pro (license key): no per-run limit on local files, page batch export of up to 100 images, ZIP packaging for the whole run, filename templates ({name} {index} {date} {width} {height} {format}) and up to 12 saved presets for repeat jobs. PRIVACY ImageConv is privacy-first by design: • All processing happens locally in your browser — images are never uploaded • No analytics, no telemetry, no cookies, no access to your browsing history • Images exist in memory only while being converted, then they are released • The only outbound request is license verification: your license key, a random per-install ID and basic browser metadata (browser version, language, time zone). It runs when you activate a license and at most once every 2 hours afterwards — image data is never transmitted • Minimal permissions: contextMenus, downloads, offscreen, storage, scripting and clipboardWrite. Broad site access is used only to fetch the image you clicked and to scan a page when you request a batch export Interface and context menu are available in English, 中文, Español, Deutsch, 日本語 and Français. NOTES • Local files up to 45 MB each. • This tool is for personal use. Images on web pages belong to their original copyright owners — do not use converted files for commercial reproduction, unauthorized redistribution or derivative works. • Please respect each website's terms of service and do not use the cross-origin fetch to harvest image resources in bulk. Official site: https://annmax1983.com/extensions/imageconv