Xunidd vs CloudConvert: which should you use for HEIC to JPG?
Both tools turn HEIC into JPG and the output looks the same, but they take completely different routes: one does the work inside your browser, the other sends your files to the cloud. Which one to pick depends on what you care about.
The short answer
Need to convert a messy mix of formats, want an API for automation, or your files already live in cloud storage — use CloudConvert.
Your photos are private, you don't want an account, you only need a few files, or your connection is slow — use a local-processing tool (that's the route this site takes).
These two aren't substitutes. I use both: CloudConvert for client RAW files and odd formats, and local conversion for anything from my phone camera roll or containing faces.
The fundamental difference: where the file goes
CloudConvert is a cloud service. You upload the file to its servers, it processes it there with tools like FFmpeg and ImageMagick, then sends the result back. Its documentation states files are deleted after a period — but the file does leave your device.
This site works entirely in your browser: HEIC is decoded with a WebAssembly build of libheif, and JPG is encoded through the browser's own Canvas API. There is no backend endpoint and no upload request.
You don't have to take that on faith. Load the page, turn off your Wi-Fi (or switch to airplane mode), then drop a photo in. If it converts, the work happened locally. If it errors or spins forever, the file was going to a server. Run that test on any converter you're considering.
Point by point
Cost: this site is free with no quota. CloudConvert's free tier allows 10 conversions per day with files up to 1 GB, and requires an account; beyond that you buy a plan.
Upload: none here. CloudConvert always uploads — that's its architecture, not an option.
Batch capacity: you can drop dozens of files here at once; the practical ceiling is your device's available memory (a phone will struggle with hundreds, a laptop won't). CloudConvert's ceiling is higher because the compute happens on its servers.
Quality control: both expose a quality setting. This site offers a quality slider plus output sizing (longest edge 2048 / 1920 / 1280 / 800 px, or a percentage).
Format coverage: the biggest gap. CloudConvert handles 200+ formats including video, audio, documents and ebooks. This site only does images — HEIC, WebP and AVIF to JPG and PNG.
Speed: for a handful of files, local is faster because there's no upload and download leg. For thousands of files, the cloud is steadier since it won't exhaust your browser's memory.
Account required: no here, just open the page. CloudConvert's free tier needs one.
When CloudConvert is the better choice
To be fair, it wins clearly in these situations:
1. Your formats are all over the place. HEIC, PSD, CR2, MOV and PDF in one session — a browser image tool can't help.
2. You need automation. It has an API you can wire into a CI pipeline or your own product. This site has none.
3. Your files are already in the cloud. It pulls directly from Google Drive and Dropbox, so you skip the download-then-upload round trip.
4. You're converting thousands of files that carry no privacy concern — public stock assets, product shots, that kind of thing.
When a local tool is the better choice
1. Your photos contain private information. Phone photos usually carry EXIF data including capture time and GPS coordinates. ID photos, family pictures, client work, medical images — uploading any of that to a third-party server is a risk, even when the operator promises deletion.
2. Your network blocks uploads. Plenty of corporate policies intercept file uploads; local processing is unaffected.
3. You need two or three files converted and don't want to create an account for it.
4. Your connection is slow, or there isn't one. Local conversion keeps working offline once the page has loaded.
If any of those describe you, the HEIC to JPG converter here will do the job — just drag the files in.
Common questions
What is CloudConvert's free quota? Officially 10 conversions per day with files up to 1 GB, and an account is required. Quotas change, so check its site for the current numbers.
Does local conversion lose quality? There's one lossy encode, but that's inherent to the JPG format — it happens wherever you convert. Set quality to 90 or above and the difference is invisible in practice. For truly lossless output, convert to PNG instead; expect files 3–5× larger.
Does it work on a phone? Yes. Browser-based local processing works the same on mobile; very large batches are limited by the phone's memory.
Is local slower? For a few files it's faster, since you skip upload and download. For hundreds, speed depends on your hardware.