Practical tool guides

Understand each workflow, privacy model, compatibility limit, and output check before changing an important file or relying on a calculation.

How Private, Browser-Based PDF Tools WorkUnderstand how browser-based PDF tools can merge, split, and convert documents without uploading the file to a conversion server.How to Merge PDF Files Without Uploading ThemA practical guide to combining and reordering PDF pages locally in your browser without sending the documents to a conversion server.How to Choose the Right PDF ConverterChoose the correct PDF conversion workflow for Word documents, images, page extraction, compression, and editable output.How to Reduce PDF File Size Without UploadingLearn when PDF compression works, how image quality affects size, and how to check a smaller PDF before sharing it.How to Compress Images for Faster WebsitesChoose image dimensions, format, and quality for faster web pages without making photographs or graphics unnecessarily blurry.How to Remove a Portrait Background PrivatelyRemove a person's photo background on-device, understand segmentation limits, and check transparent PNG edges before using the result.How to Create a QR Code That Scans ReliablyCreate a static QR code for a URL, WiFi network, text, or contact and test its contrast, size, error correction, and destination.How to Count Words and Characters AccuratelyUnderstand word, character, sentence, paragraph, and reading-time counts before submitting an essay, application, post, or article.How to Calculate Percentages CorrectlyChoose the right formula for a percentage of a number, percentage change, increase or decrease, and reverse percentage calculations.How to Trim or Resize Video in Your BrowserChoose between trimming, cropping, and resizing video, understand real-time WebM output, and verify the processed clip before sharing.