Guides

Learn how to recover deleted slides in PowerPoint with our complete 2026 guide, including free tips, advanced methods and professional tools. 1. Introduction This guide explains how to recover deleted slides in PowerPoint, including the following three scenarios: Accidentally deleted slide(s) within an open presentation Permanently deleted slide(s) — the deletion was saved or the undo history was cleared The entire PowerPoint file was deleted 2. Method 1: Undo the Deletion...

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Learn how to recover deleted Word documents with our complete guide, including free tips, advanced methods, and professional tools. 1. Introduction Accidentally deleting a Word document is one of the most common data loss scenarios on Windows and Mac. Whether you use the Delete key or empty the Recycle Bin, recovery is often possible if you act quickly and stop writing new data to the affected drive. This guide covers the following three scenarios: Accidental deletion — the file...

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Learn how to change file extension on Windows, Mac, and Linux, from simple GUI methods to bulk and recursive command-line renaming. 1. What Is a File Extension? 1.1 Definition and Format A file extension is the suffix after the dot at the end of a filename—for example, .docx in myfile.docx, .jpg in mypicture.jpg, or .mp4 in myvideo.mp4. The operating system reads the extension to determine which program opens the file. The extension is stored as part of the filename itself, not inside...

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Learn how to recover deleted Excel files with our complete 2026 guide, including free recovery tips, advanced methods and professional tools. 1. Introduction Accidentally deleting an Excel file is one of the most common data loss scenarios on Windows and Mac. Whether you use the Delete key or empty the Recycle Bin, recovery is often possible if you act quickly and stop writing new data to the affected drive. This guide covers the following three scenarios: Accidental deletion —...

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Recover unsaved PowerPoint file with complete 2026 guide, including free recovery tips, advanced methods and professional tools. 1. Introduction 1.1 Common Causes of Unsaved PowerPoint Files In general, PowerPoint presentations are not saved for the following reasons: Accidental closure without saving—clicked Don't Save by mistake System crash, freeze, power outage, or unexpected shutdown Windows Update forcing PowerPoint to close mid-session PowerPoint application crash or...

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Recover unsaved Word document with complete 2026 guide, including free tips, advanced methods & professional tools. 1. Introduction 1.1 Common Causes of Unsaved Word Documents In general, Word documents are not saved for the following reasons: Accidental closure without saving—clicked Don't Save by mistake System crash, freeze, power outage, or unexpected shutdown Windows Update forcing Word to close mid-session Word application crash or freeze OneDrive sync...

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Recover unsaved Excel file with this complete 2026 guide, including free recovery tips, advanced methods & professional tools. 1. Introduction 1.1 Common Causes of Unsaved Excel Files In general, Excel files are not saved for the following reasons: Accidental closure without saving (clicked Don't Save by mistake) System crash, power outage, or unexpected shutdown Windows Update forcing Excel to close mid-session Excel application crash OneDrive sync conflicts...

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Repair corrupt FIT files with our complete 2026 guide, including free recovery tips, advanced methods, and professional tools. 1. Introduction 1.1 What Is a FIT File? A FIT (Flexible and Interoperable Data Transfer) file is a binary format developed by Garmin to store fitness activity data recorded by GPS watches, bike computers, and other sports devices. It captures metrics such as GPS coordinates, heart rate, speed, cadence, power, elevation, and lap data in a compact, structured...

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Repair corrupt WAV files with our complete 2026 guide, including free recovery tips, advanced methods, and professional tools. 1. Introduction 1.1 What Is a WAV File? WAV (Waveform Audio File Format) is an audio container format developed by Microsoft. Because WAV files are Windows built-in audio format, they are the standard choice in professional recording, broadcast, and post-production workflows. 1.2 Signs Your WAV File Is Corrupt 1.2.1 Common Error Messages "Invalid RIFF...

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Repair STL files with our complete 2026 guide, including free recovery tips, advanced methods & professional tools. 1. Introduction 1.1 What Is an STL File? STL (STereoLithography) is the dominant file format for 3D printing, rapid prototyping, and computer-aided manufacturing, and is supported by virtually all CAD and mesh editing tools. 1.2 Why We Need to Repair STL Files before Printing STL files frequently contain errors that prevent a slicer from producing a correct toolpath...

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