Click the "Select File" button above, and choose your OBML15 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert OBML15 to another file type
To convert OBML15 saved webpages to another format, you need Opera Mini or other Web software.
Convert a file to OBML15
To convert other file formats to the "Offline Saved Webpage" file type, you need software like Opera Mini or a similar tool.
About OBML15 files
The .OBML15 file extension stands for Opera Binary Markup Language version 15. It is a highly proprietary, compressed binary format created by older versions of the Opera Mini mobile browser to save web pages for offline reading. Historically, these files were opened exclusively by Opera Mini on Java ME, Symbian, or early Android devices. The format relies on server-side rendering techniques that pre-process web content to save bandwidth. The primary disadvantage of an .OBML15 file is its closed, proprietary nature. It is completely unreadable in modern web browsers like Chrome, Firefox, or even current desktop versions of the Opera browser. You cannot natively extract the embedded images, layout, or text without the original legacy application. Files are practically locked into outdated mobile ecosystems. Users typically need to convert .OBML15 to standard formats like HTML for browser viewing, PDF for document sharing, or TXT to salvage the raw text content. Expect severe layout and styling losses, as the proprietary OBML formatting does not map perfectly to modern Document Object Model structures. This file format is notoriously difficult to open or convert because the binary compression is undocumented. Standard online converters fail to process it because they cannot replicate the original server-side decompression. Often, only the original Opera Mini software can properly read or export the data. Our system can inspect the binary file and show extracted text or internal content. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your OBML15 file, detects the exact format, and lets you read the text inside.
FAQ
If you want to convert OBML15 file to HTML, HTM, CSS, JS, PHP, ASP, ASPX, JSP, JSPX, PY, RB or PL, you can use Opera Mini or similar software from the "Offline Webpage Archive" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to OBML15, try Opera Mini or another comparable tool in the "Offline Webpage Archive" category.
The OBML15 Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our OBML15 converter.