Guides and Tutorials
Practical, step-by-step guides for everyday file tasks: converting HEIC photos, compressing images to an exact size, reducing and merging PDFs, shrinking videos for WhatsApp, making GIFs, creating QR codes and more. Every guide explains the concepts in plain language, gives clear instructions and links to a free tool that works privately in your browser, without uploading your files.
Images
How to Convert HEIC to JPG on Windows, Mac, iPhone and Android
HEIC photos will not open or upload? Learn what HEIC is and five easy ways to convert HEIC to JPG on any device, including a free online converter that never uploads your photos.
ImagesPNG vs JPG vs WebP: Which Image Format Should You Use?
Not sure whether to save an image as PNG, JPG or WebP? This guide compares quality, file size, transparency and compatibility so you can pick the right format every time.
ImagesHow to Compress an Image to 100KB (or 50KB, 20KB)
Forms asking for a photo under 100KB, 50KB or 20KB? Learn how to compress a JPG to an exact file size quickly, plus the right pixel sizes for passport and ID photos.
ImagesSocial Media Image Sizes Cheat Sheet: Instagram, Facebook, LinkedIn, YouTube and More
The correct image sizes for Instagram, Facebook, LinkedIn, YouTube, X, Pinterest and TikTok, with aspect ratios and tips to avoid blurry or cropped pictures.
ImagesWhat Is WebP? Benefits, Drawbacks and How to Convert It
WebP explained: what the format is, how much smaller it is than JPG and PNG, where it works, why some sites reject it and how to convert WebP to JPG or JPG to WebP.
ImagesLossy vs Lossless Compression: What It Means for Images, PDFs and Video
Understand the difference between lossy and lossless compression, how JPG, PNG, WebP and video codecs use them, and how to choose the right setting for each job.
How to Reduce PDF File Size Without Losing Quality
PDF too big to email or upload? Learn why PDFs get large and the practical ways to compress a PDF to 1MB, 2MB or 5MB, including a free browser-based PDF compressor.
PDFHow to Merge PDF Files Into One Document (Free, No Software)
Learn how to combine multiple PDF files into a single document in the right order. Step-by-step instructions, tips for clean results, and a free private PDF merger.
PDFHow to Split a PDF Into Separate Pages or Extract a Page Range
Need only some pages from a big PDF? Learn how to split a PDF into single pages or extract an exact page range for free, privately, in your browser.
PDFHow to Convert JPG to PDF: Turn Photos Into One Clean Document
Learn how to convert JPG and PNG images to a single PDF, in the right order, with tips for clear document scans from your phone. Free and private.
Video
How to Compress a Video for WhatsApp, Discord and Email
Video too large to send? Learn why videos are so big and how to compress a video for WhatsApp, Discord or email without losing too much quality, using a free browser tool.
VideoMOV vs MP4: What Is the Difference and Which Should You Use?
MOV or MP4? Learn how the two video formats differ, why iPhone videos use MOV, and how to convert MOV to MP4 for Windows, Android, social media and editing.
VideoHow to Make a GIF From a Video (and Keep It Small)
Turn any video clip into a looping GIF. Learn how to choose the start time, frame rate and width, and how to keep your GIF small enough to share.
VideoHow to Extract Frames From a Video: 4 Easy Methods
Learn four ways to save still images from a video: in your browser, with a media player, with FFmpeg and with a screenshot. Includes tips for sharp, full-resolution frames.