HTM to OPML — Format Comparison & Online Converter
Fast, instant HTM to OPML conversion. No signup required. Just drop your .htm file and get .opml in seconds.
Batch Settings
About HTM to OPML Conversion
HTM and OPML are both document formats, but they differ in important ways. HTM is a widely used file format. OPML is a widely used file format.
When you convert HTM to OPML, the goal is to convert between formats quickly. Converting HTM to OPML maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your HTM file is decoded and re-encoded as OPML. The conversion involves 4 steps: (1) your htm file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in opml format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a OPML file. For the opposite direction, CocoConvert also supports OPML to HTM conversion.
How to Convert HTM to OPML
- 1
Upload .htm file
Select your HTM file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .opml
Set OPML as the output format. The converter uses optimal settings based on the HTM→OPML conversion profile.
- 3
Convert
The server-side engine decodes your HTM file and re-encodes it as OPML. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .opml file. Multiple output files can be downloaded together.
What Happens When You Convert HTM to OPML
Your HTM file is decoded and re-encoded as OPML.
Your HTM file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in OPML format
The converted file is ready for download
Format Comparison
HTM
.htm file
| Extension | .htm |
| MIME Type | text/html |
| Category | Document |
OPML
.opml file
| Extension | .opml |
| MIME Type | text/x-opml |
| Category | Document |
Should You Convert HTM to OPML?
When to Convert
- ✓When you need a OPML file
Frequently Asked Questions
What is the difference between HTM and OPML?
HTM is a widely used file format. OPML is a widely used file format.
Does HTM to OPML conversion affect quality?
Converting HTM to OPML maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, HTM or OPML?
HTM is a common document format. OPML is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does HTM to OPML conversion take?
Most conversions finish in seconds. Larger files or complex document content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is HTM or OPML better for long-term storage?
Both formats use lossy compression, so consider keeping your original source file for long-term storage.
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