Practical guides on getting data out of files — PDFs, images, archives and Windows installers — from the people who build the free tools.
An MSI file is not a plain archive like a ZIP — it’s a Windows Installer database. Under the hood it’s a Compound File Binary (the same container format as an old .msg), and…
Read the guide →Colour palette extraction takes an image that may contain tens of thousands of distinct colours and reduces it to a small set of representative ones by grouping similar colours together — a process called…
Read the guide →Most photos carry EXIF metadata — a block of hidden information written by the camera or phone that can include the exact date and time, the camera and lens, the settings, and often the…
Read the guide →Google Docs doesn’t offer a clean “save image” for pictures in a document — right-clicking gives limited options and often a downscaled copy. The reliable way to get every image at full quality is…
Read the guide →A .docx file is a ZIP archive of XML parts. The actual text lives in word/document.xml, stored as a tree of paragraphs and “runs” of characters; images sit in word/media/, and formatting is kept…
Read the guide →Word, Excel and PowerPoint files store hidden metadata in two XML parts inside the file — docProps/core.xml and docProps/app.xml — including the author, the company, the name of everyone who last saved it, the…
Read the guide →A file extension is the suffix in a filename (.pdf, .jpg) — a human-facing label that can be changed or wrong. A MIME type is the media type a program declares and acts on…
Read the guide →OCR is highly accurate — often above 98% — on clean, high-resolution images of printed text in a supported language, but accuracy falls sharply with low resolution, poor contrast, skew, unusual fonts, or handwriting.…
Read the guide →In a log file, an IPv4 address looks like 203.0.113.45 — four numbers separated by dots — while an IPv6 address looks like 2001:db8::1 — groups of hex separated by colons, often shortened with…
Read the guide →CSV is a plain-text file that stores one table as comma-separated rows; XLSX is Excel’s compressed, multi-sheet format that also stores formatting, formulas, multiple tabs and data types. Use CSV when you need a…
Read the guide →Every tool runs in your browser and never uploads your files. Browse the full tool directory →
