How to compress HEIC without uploading
This compressor shrinks HEIC in your browser. Lower the quality slider or set a max width to reduce file size, then download a lighter copy for email, forms, or websites.
Unlike online compressors that upload your photos to a server, ImgConvert re-encodes everything locally. That matters for invoices, ID scans, product shots, and anything you would not share publicly.
Quality vs file size
Compression is a trade-off. Mild reductions often look identical on screens while cutting dozens of kilobytes. Aggressive settings help when a form enforces a hard limit (for example 100 KB or 1 MB).
- Photos: start around 70–85% quality, then go lower only if needed
- Graphics with text: prefer WebP/PNG carefully — heavy JPG can blur edges
- Already tiny icons: resizing down may help more than re-encoding
- Batch work: convert several files, then download all at once
When compression helps most
Use this tool before uploading to CMS platforms, sending attachments, or optimizing landing pages. Smaller images load faster and use less mobile data.
- Website performance and Core Web Vitals
- Email attachments that hit size limits
- Marketplace or form uploads with maximum file sizes
- Sharing folders full of phone camera photos