How to Convert HEIF to PNM — Quick & Free
Fast, instant HEIF to PNM conversion. No signup required. Just drop your .heif file and get .pnm in seconds.
Batch Settings
About HEIF to PNM Conversion
Short answer: yes, you can convert HEIF to PNM online for free, and quality is well preserved with the right settings. Just upload your .heif file to CocoConvert, pick PNM as the output, and click Convert. The whole process takes seconds.
Now for the details. HEIF stores images using highly efficient HEVC compression, commonly used on Apple devices. PNM is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your HEIF file is decoded and re-encoded as PNM. Converting HEIF to PNM maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert HEIF to PNM
- 1
1. Upload HEIF
Drop your .heif file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select PNM
Choose .pnm from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .pnm file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert HEIF to PNM
Your HEIF file is decoded and re-encoded as PNM.
Your HEIF file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in PNM format
The converted file is ready for download
Format Comparison
HEIF
.heif file
| Extension | .heif |
| MIME Type | image/heif |
| Category | Image |
PNM
.pnm file
| Extension | .pnm |
| MIME Type | image/x-portable-anymap |
| Category | Image |
Should You Convert HEIF to PNM?
When to Convert
- ✓When you need a PNM file
Frequently Asked Questions
Is HEIF to PNM conversion free?
Yes. CocoConvert offers free HEIF to PNM conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is HEIF to PNM conversion?
Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded HEIF file and the converted PNM file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting HEIF to PNM lose quality?
Converting HEIF to PNM maintains high quality with CocoConvert's optimised encoder settings.
Can I convert PNM back to HEIF?
Yes, CocoConvert supports PNM to HEIF conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
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