Convert HTM to PDF Online

Convert HTM to PDF — Web Pages to Portable Documents

HTM and HTML are the same format — .htm is the three-character extension used by older web servers, Windows tools, and legacy systems, while .html is the modern four-character version. Both contain identical markup. This converter renders your .htm file in a full browser engine — applying all CSS styles, inline fonts, and background images — and exports the result as a standard PDF. The output is a fixed-layout document that prints consistently, archives reliably, and opens on every device without a browser. Drop your .htm file above and download a PDF in seconds.

HTM vs HTML — What Is the Difference?

There is no technical difference between .htm and .html files. Both are plain text files containing HTML markup. The .htm extension dates from the DOS and early Windows era, when file systems limited extensions to three characters (the 8.3 filename convention). When 32-bit Windows and Unix systems removed this limit, .html became standard — but .htm remained in use on older web servers (IIS in particular), legacy site generators, Windows Help files (.chm, which contains .htm pages), and archival web content saved with older browsers.

Every browser, every web server, and every HTML parser treats .htm and .html identically. The same CSS, JavaScript, and HTML5 markup works in both. If you have a .htm file you need to convert to PDF, the process is exactly the same as for .html.

HTM vs PDF — Format Comparison

When Do You Need HTM to PDF Conversion?

• Archiving legacy web content: Old websites, intranets, and documentation systems saved pages as .htm files. Converting to PDF produces a permanent, self-contained record that doesn't depend on a web server, linked CSS files, or external assets.
• Windows Help file content: .chm (Compiled HTML Help) files contain individual .htm pages. Extracting and converting those pages to PDF makes the help content portable and printable outside the CHM viewer.
• Email reports from legacy systems: Older CRM systems, accounting packages, and ERP tools export reports as .htm files. Converting to PDF makes the report shareable and printable without a browser.
• Fixed-layout sharing: An .htm file sent by email requires the recipient to have a browser and may render differently depending on their browser version. A PDF renders identically everywhere.

• Document management systems: Most DMS platforms (SharePoint, Documentum, OpenText) index and display PDF files. HTM files require a browser plugin or separate viewer. Converting to PDF integrates the content into standard DMS workflows.
• Legal and compliance archiving: Web-based contracts, terms of service, and policy pages saved as .htm files need to be archived as PDF for legal records. PDF is tamper-evident and meets archival requirements that .htm files do not.
• Offline documentation packages: Technical manuals and product documentation distributed as .htm files convert to PDF for inclusion in offline documentation packages, USB drives, and printed manuals.
• Print shop submission: Print shops accept PDF for posters, brochures, and booklets. HTM layouts converted to PDF can be sent directly to a print shop without any layout adjustments.

Online vs Desktop Converter — HTM to PDF

Command-Line Batch Conversion

The desktop Total HTML Converter processes entire folders of .htm files to PDF automatically:

TotalHTMLConverter.exe C:\Legacy_Site\*.htm /pdf /out C:\PDF_Archive\

Add /subfolders to recursively process nested directories, /pagesize Letter to match US paper size, or /header "Page %p of %n" to add page numbers. Useful for archiving legacy intranets, converting Windows Help content to PDF, or batch-processing .htm report exports from older business systems.

• Command line support
• API integration
• 24/7 offline availability
• Enterprise licensing