Practical guides on getting data out of files — PDFs, images, archives and Windows installers — from the people who build the free tools.
Before sharing a PDF, remove its hidden metadata by first checking what’s actually there — author name, the software you used, and creation and edit timestamps — then stripping those fields with your PDF…
Read the guide →A PDF stores metadata in two places: a Document Information dictionary (the classic Title, Author, Subject, Keywords, Creator, Producer and the creation and modification dates) and an XMP packet (an XML block that can…
Read the guide →PDF text comes out garbled when the file’s characters are not mapped back to real letters — usually because the PDF uses a subset or custom-encoded font with no ToUnicode table, or because the…
Read the guide →Album art in an MP3 is not a separate file sitting next to the song — it is embedded inside the MP3 itself, in the ID3v2 tag at the start of the file, in…
Read the guide →A Windows program’s icon is stored inside the .exe itself, in the file’s resource section, as one or more RT_ICON images tied together by an RT_GROUP_ICON directory. The icon you see in Explorer is…
Read the guide →An .xlsx file is not one binary blob — it is a ZIP archive containing a set of XML files. Rename a copy from .xlsx to .zip, open it, and you will see folders…
Read the guide →To convert Excel to CSV without losing data, save one sheet at a time as “CSV UTF-8”, and watch three things a CSV cannot keep: leading zeros, very long numbers, and date formatting. A…
Read the guide →A searchable PDF contains a real text layer you can select, copy and search; a scanned PDF is just an image of a page with no text underneath. The quickest way to tell them…
Read the guide →Data extraction is the process of pulling specific pieces of information — text, numbers, tables, images, or metadata — out of a file or data source and turning them into a clean, structured output…
Read the guide →An .eml file is one email message stored as plain text, written by almost every mail program — Apple Mail, Thunderbird, Gmail exports and Windows Mail. A .msg file is one message stored in…
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