ManYue: Diagnose extension mismatches from container evidence

A comic.cbz name does not establish a ZIP container, and changing extensions cannot resolve every identification failure. For a small, known-source file suspected of a naming mistake, perform read-only identity checks and retain container evidence and naming history. External tools identify format; actual ManYue import is checked separately. A new name is not format processing.

Preserve the complete name and naming history

Copy the suspect file, recording full current name, size, source, acquisition date and renaming history while leaving the original unchanged. Show actual extensions in a system file tool so comic.cbz.zip is not read as merely cbz, and a display name with hidden extension is not treated as complete. A remembered old name is personal history, not tool evidence; mark unknown when unavailable rather than guessing from an icon. Use your own or a trusted small sample, not unfamiliar downloads. Obtain complete cloud content first: zero-byte or undownloaded items concern availability, separately from container type.

Separate naming clues from tool identification

Use an existing trusted archive tool to inspect recognized format and listing read-only, recording tool, version, result and message rather than extracting everything. The extension is a declaration; identification is another piece of evidence, and they may conflict. A system icon may derive from the extension and is not independent confirmation. Cannot open does not prove RAR. If tools disagree, first confirm the same file, then retain the disagreement. Unknown identity is more useful than forcing ZIP merely because that is the desired format.

A ZIP check is not a universal format detector

If Python 3 is already installed and familiar, its standard zipfile module offers a read-only is_zipfile check for apparent ZIP identity. This is not a ManYue button and requires no new installation here. False means the check did not recognize ZIP; another format, damage or incompleteness remain possible, not an automatic RAR or 7z diagnosis. True does not read every entry or establish a comic rather than another ZIP-based document. Without this interface, retain the trusted tool’s result instead of repeatedly trying unfamiliar software for more outputs.

Use a renamed self-made copy to understand unchanged data

Separately copy a small ZIP you already know is normal and rename the copy practice.cbz, retaining before/after names and sizes. Inspect in the same tool: image content and paths should still correspond because renaming did not re-encode or repack. This demonstrates name versus container, not a direction to blindly rename the suspect original. ZIP-to-CBZ naming may follow comic convention; it does not make renaming PDF, RAR or an image a conversion. Use only a self-owned copy, restoring its name from the record if needed without overwriting a real comic.

Choose a reading-copy path after identity is established

If source and tool establish an ordinary ZIP image archive with only a wrong name, retain the original and give a reading copy an accurate name, recording why. For confirmed RAR or 7z, ManYue publicly lists those types too; test a small sample under its actual type instead of forcing CBZ. For an error webpage or unknown data, obtain the correct file from its source rather than guessing from the name. Actual conversion requires a suitable trusted tool to process content. Save output separately and inspect order and quality; a successful rename is not a completed conversion.

Check import results separately from container identity

Import the identified reading copy normally, recording format, version, processing result and local entry, then check cover, first/middle/final pages and chapters. Correct identification with failed import can still involve passwords, parameters, directories or resources; it does not erase container evidence. Conversely, partial display does not establish intact entries. Separate confirmed identity, archive testing performed and successful comic reading. Use a distinct integrity workflow where needed; an identity check such as is_zipfile does not replace reading every entry.

Stop expanding guesses when results conflict

If one tool recognizes ZIP and another does not, preserve both versions and results, first checking compound extensions, different copies and incomplete downloads. Do not try ten extensions until an entry accepts one or execute archive scripts to determine type. For unexplained structure, consult the trusted source or leave it pending instead of uploading private comics to an unknown conversion site. Distinguish identification disagreement from import error in developer reports and provide a shareable small sample. Without sufficient evidence, promise no particular rename as a guaranteed repair.

Return and verify name-to-content mapping

Leave the reader and return, confirming that the entry maps to the final reading copy rather than another image-matching old name. Retrieve first/middle/final anchors from the list. Preserve original name, confirmed type, tool evidence, corrected name and actual import result, retaining unknowns in the summary. When restoring a practice name, check that the original was untouched. Completion explains naming, evidence for internal type and tested reading scope, not a claim that a familiar extension converted the file or made it safe.

Related guides and sources

ManYue file formats: choose CBZ, CBR, CB7 or PDF and check page order; ManYue: Test CBZ archive integrity separately from readable pages.

Checked on November 8, 2026: Apple public version information lists ManYue 2.0.4, requiring iOS / iPadOS 15.0 or later. Feature scope follows the official App Store description and the installed version. This article provides reading and checking methods you can perform; it does not claim step-by-step physical-device or private-server testing. Manual records, external tools and actually visible controls are identified separately, and personal analysis or code observations are not presented as verified automatic capabilities.

For ZIP identification versus integrity testing, see Python: zipfile. Renaming does not change the internal container; the naming comparison uses only a recoverable self-owned copy.