Free, in-browser image & video tools for online sellers. Convert iPhone HEIC photos to JPG, resize them for Etsy / eBay / Amazon / Poshmark, compress, strip GPS data, and convert iPhone HEVC videos to MP4 — all without uploading your files to a server.
🔗 Live site: https://listreadyapp.vercel.app
Two everyday problems for people who sell online:
- iPhones save photos as HEIC, which many marketplaces and Windows PCs won't open or accept.
- Every marketplace wants a different image size, and listing photos often end up blurry or rejected.
Most online converters upload your photos to a server — not great for personal images. ListReady does the work locally in your browser, so your files never leave your device.
- HEIC → JPG / PNG / WEBP conversion
- One-click resize presets for Etsy (2000px), eBay & Amazon (1600px), Poshmark/Mercari (1200px square), and Instagram (1080×1080)
- Smart compression to keep listings fast-loading
- Strips GPS / EXIF metadata automatically on re-encode (so you don't broadcast your location)
- Batch processing with one-click ZIP download
- iPhone HEVC / .MOV → MP4 video conversion for Windows
- 100% client-side for the photo tools and short video clips — nothing is uploaded
Everything for the image tools runs in the browser:
- HEIC decoding via
heic2any - Resize / compress / EXIF-strip via the HTML
<canvas>API (re-encoding drops metadata) - Batch ZIP via JSZip
- Short video clips convert in-browser via
ffmpeg.wasm
Large videos exceed what a browser tab can hold in memory, so those are the one piece that uses a small server-side transcode service (see server/).
| Path | What it is |
|---|---|
build.py |
Generates the templated image-tool pages (index, etsy, ebay, amazon, poshmark, windows) plus sitemap.xml / robots.txt. Edit shared nav/footer/SEO here — don't hand-edit the generated HTML. |
app.js |
Image tool logic (convert / resize / compress / Pro features). |
video.html + video.js |
iPhone video → MP4 converter (standalone, not generated). |
style.css |
Shared styles. |
814.ffmpeg.js, ffmpeg.js |
Self-hosted FFmpeg wrapper + worker (must be same-origin). |
server/ |
Server-side video transcode + license verification (Node + FFmpeg, deploys to Cloud Run). |
og-image.png, demo.gif |
Social share assets (gen_assets.py generates them). |
It's a static site — no build step needed to run it:
# serve the folder however you like, e.g.
python3 -m http.server 8000
# then open http://localhost:8000To change shared layout or SEO across the marketplace pages, edit build.py and regenerate:
python3 build.py- Vanilla HTML / CSS / JavaScript (no framework)
heic2any, JSZip,ffmpeg.wasm(loaded from CDN)- Hosted on Vercel (auto-deploys on every commit)
- Optional Node + FFmpeg service on Cloud Run for large-video transcoding
ListReady is free. A one-time $9 Pro unlock adds unlimited batch sizes, WEBP output, custom watermarks, and large-video conversion. No subscription.
Built for online sellers. Your photos stay on your device.