PNG HEIC
Convert PNG to HEIC directly in your browser. HEIC compression typically reduces photographic file sizes by 65–85% at quality 85. Files are processed locally — nothing is uploaded to any server.
All conversion runs in your browser. Files never upload to any server.
How to convert PNG to HEIC
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Upload PNG
Drag and drop your PNG files (or a whole folder) into the dropzone. Multiple files are supported.
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Pick quality
Use quality 85 for photographs (visually lossless), 92+ for screenshots and text. You can also set a target size in KB.
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Download HEIC
Save individual files or download the whole batch as a ZIP. Conversions run instantly with no waiting queue.
What changes when you convert PNG to HEIC
Transparency
HEIC preserves the full alpha channel — transparent areas remain transparent.
Metadata & color profile
EXIF, ICC color profiles, and ancillary chunks are stripped during conversion. Output files contain only image data — useful for privacy, but worth noting if you depend on color-profile fidelity.
Quality & compression
HEIC uses lossy compression. At quality 85 the result is visually identical to the source for photographs; below ~75 you will see ringing artifacts on text and high-contrast edges.
Quality & file-size benchmarks
Typical size change after converting a 1 MB PNG input into HEIC with default settings. Real numbers depend on image content; these ranges cover ~80% of inputs.
| Input type | Photograph → HEIC | Screenshot / line art → HEIC |
|---|---|---|
| Photographic content | -85% … -65% | — |
| Screenshot, UI, line art | — | -60% … -20% |
Negative numbers = smaller output. Positive = larger. Measured on a representative 1 MB sample at the recommended quality setting.
PNG vs HEIC
PNG and HEIC optimize for different content. The table below summarizes how each handles transparency, compression, and browser support so you can pick the right target before converting.
| Feature | PNG (Input) | HEIC (Output) |
|---|---|---|
| Best For | Graphics, Logos, Text | General Use |
| Compatibility | High (All browsers) | Varies |
| Transparency | Yes (Alpha channel) | Unknown |
| Typical Size | Large (Lossless) | Varies |
| Compression | Lossless Compression | Standard |
Rule of thumb: photographs → lossy (HEIC); screenshots, logos, transparent assets → keep PNG or use WebP lossless.
Should you convert PNG to HEIC?
Convert when…
- The image is a photograph and file size matters.
- You are publishing on the web and need fast loading.
- Transparency is not required for this asset.
- You are sending or attaching the file and want a smaller payload.
Don't convert when…
- The image is a screenshot, logo, line art, or pixel art — JPEG-style compression smudges hard edges.
- You need to keep transparency.
- You will edit the image further (every save loses more detail).
- The source is already small (under ~50 KB).
Why this converter is different
Privacy by design
100% client-side. No server upload, no logging, no retention.
Unlimited & batch-ready
Drag and drop dozens of files. No file-count or size limits beyond browser RAM.
Works offline
After the first load, the converter keeps working without internet.
Privacy Guaranteed
We use WebAssembly technology. Your photos are processed in your browser, never uploaded to our servers.
Instant Speed
No upload time means faster results. The conversion happens instantly on your device.
Batch Conversion
Convert up to 50 files at once. Drag, drop, and convert your entire gallery in seconds.
Frequently asked questions
Is transparency preserved?
Yes. HEIC supports a full alpha channel, so transparent regions of your PNG remain transparent in the output.
Is EXIF or color-profile metadata kept?
No. The conversion strips EXIF, ICC color profiles, and ancillary metadata. Output files contain only image data — better for privacy, but note this if you rely on embedded color profiles.
Will colors look different after conversion?
At the recommended quality the difference is imperceptible. Lossy formats use chroma subsampling that can subtly shift saturated colors and reds; raising the quality slider above 90 removes any visible drift.
How many files can I convert in one batch?
Practical limit is roughly 50 files or 500 MB combined, since processing happens in browser RAM. For larger batches, convert in groups and use the ZIP download.
Is the converter free?
Yes — unlimited use, no signup, no watermark.